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- Author:
- Lakshmi Prabavathi S.; Saravanakumar K.; Gcina Mamba; Muthuraj V.
- Source:
- Colloids and surfaces 2019 v.581 pp. 123845
- ISSN:
- 0927-7757
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; anions; carbon nitride; carbonates; catalysts; chemical composition; chlorides; energy-dispersive X-ray analysis; hot water treatment; irradiation; light; nanocomposites; nanorods; nanosheets; ofloxacin; optical properties; photocatalysis; pollutants; pollution control; scanning electron microscopy; sulfates; transmission electron microscopy; ultrasonic treatment
- Abstract:
- ... Herein, MnWO₄ nanorods coupled with g-C₃N₄ nanosheets were fabricated by a simple hydrothermal method, followed by an ultrasonication method. Morphological features, chemical composition, optical properties and crystallographic information of the prepared materials were obtained using SEM-EDX, TEM, XRD, XPS, FT-IR, UV–vis DRS, and PL techniques. The synthesized MnWO₄@g-C₃N₄ nanocomposite displayed ...
- DOI:
- 10.1016/j.colsurfa.2019.123845
- https://doi.org/10.1016/j.colsurfa.2019.123845
- Author:
- Yuxiang Chen; Chuan Jing; Xing Zhang; Debin Jiang; Xiaoying Liu; Biqin Dong; Li Feng; Shaochun Li; Yuxin Zhang
- Source:
- Journal of colloid and interface science 2019 v.548 pp. 100-109
- ISSN:
- 0021-9797
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; anions; chlorides; coal; dyes; hot water treatment; ion exchange; kinetics; methyl orange; models; nanosheets; pH; scanning electron microscopy; sorption isotherms; temperature
- Abstract:
- ... In this study, the ultra-thin CoAl layered double hydroxide (LDH) nanosheets with Cl− intercalation were prepared by a hydrothermal method following acid-salt treatment. The morphology, structure and composition information of CoAl LDHs were identified by a variety of characterization methods including SEM, XRD, XPS, FT-IR, and BET. The effects of initial adsorbent concentration, pH, competitive a ...
- DOI:
- 10.1016/j.jcis.2019.03.107
- https://doi.org/10.1016/j.jcis.2019.03.107
- Author:
- Jian Li; Hongzhi Cui; Xiaojie Song; Guosong Zhang; Xinzhen Wang; Qiang Song; Na Wei; Jian Tian
- Source:
- RSC advances 2016 v.6 no.95 pp. 92402-92410
- ISSN:
- 2046-2069
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; anions; cations; chromium; energy-dispersive X-ray analysis; heavy metals; ion exchange; metal ions; methyl orange; nanosheets; nickel; pollutants; scanning electron microscopy; sorption isotherms; surface area; transmission electron microscopy; water purification
- Abstract:
- ... Hexagonal MgAl layered double hydroxide (MgAl-LDH) materials comprised of nanosheets and microsheets with different precipitants were synthesized via a facile hydrothermal route. XRD, FESEM, TEM and BET were employed to characterize the samples. Structural characterization revealed that MgAl-LDHs nanosheets and microsheets are 100 nm and 2 μm in width, respectively. Furthermore, MgAl-LDHs nanoshee ...
- DOI:
- 10.1039/c6ra18783h
- https://doi.org/10.1039/c6ra18783h
- Author:
- Yuyan Liu; Saran P. Sohi; Siyuan Liu; Junjie Guan; Jingyao Zhou; Jiawei Chen
- Source:
- Journal of environmental management 2019 v.235 pp. 276-281
- ISSN:
- 0301-4797
- Subject:
- X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; anions; biochar; biomass; chromium; electrostatic interactions; ferric chloride; hydrophobicity; iron; magnetism; pH; peanut hulls; pollutants; pyrolysis; redox reactions; scanning electron microscopy; surface area; temperature; trichloroethylene; water pollution
- Abstract:
- ... To address inorganic and organic contaminants in the environment, economic new adsorbents are required. Here we test magnetic biochar for efficient capture of the typical pollutants Cr(VI) and trichloroethylene (TCE) from solution. We used a simple synthesis using 2M FeCl3 solution and peanut hull biomass to prepare magnetic ZVI biochar at alternate pyrolysis temperatures between 650 and 800 °C. T ...
- DOI:
- 10.1016/j.jenvman.2019.01.045
- https://doi.org/10.1016/j.jenvman.2019.01.045
- Author:
- Wanjun Mu; Qianhong Yu; Xingliang Li; Hongyua Wei; Yuan Jian
- Source:
- RSC advances 2016 v.6 no.85 pp. 81719-81725
- ISSN:
- 2046-2069
- Subject:
- X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; anions; human health; iodides; iodine; medical treatment; nanocrystals; nanofibers; nuclear power industry; pH; radionuclides; scanning electron microscopy; sodium; temperature; transmission electron microscopy; wastewater
- Abstract:
- ... Iodine radioisotopes have been released into the environment both by the nuclear industry and as a result of medical treatment using radioactive materials, potentially posing a serious threat to human health. Thus, when developing applications of radioactive iodine, emergency procedures for dealing with it, and preventing its leakage, are constant concerns. In this study, nanofibers and cubes of A ...
- DOI:
- 10.1039/c6ra18091d
- https://doi.org/10.1039/c6ra18091d
- Author:
- Ming-yang Dai; Yun-guo Liu; Guang-ming Zeng; Shao-bo Liu; Qi-meng Ning
- Source:
- Environmental science and pollution research international 2019 v.26 no.8 pp. 7614-7626
- ISSN:
- 0944-1344
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; anions; aqueous solutions; carbon nanotubes; estradiol; hydrogen bonding; nanocomposites; pH; phosphates; porous media; scanning electron microscopy; sorption isotherms; stabilizers; temperature; thermodynamics; transmission electron microscopy; water pollution
- Abstract:
- ... The removal of 17β-estradiol (E2) from contaminated water on nanoscale Fe–Mn binary oxide-loaded multiwalled carbon nanotubes (MWCNTs/FMBO) was evaluated in this work. The characterizations of the mesoporous adsorbent were analyzed by using SEM, TEM, VSM, XRD, XPS, and FTIR measurements. The effects of experimental conditions in E2 removal, including stabilizer additional level, adsorption time, i ...
- DOI:
- 10.1007/s11356-019-04173-7
- https://doi.org/10.1007/s11356-019-04173-7
- Author:
- Jianbo Lǚ; Huijuan Liu; Ruiping Liu; Xu Zhao; Liping Sun; Jiuhui Qu
- Source:
- Powder technology 2013 v.233 no. pp. 146-154
- ISSN:
- 0032-5910
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; anions; coprecipitation; electrostatic interactions; energy-dispersive X-ray analysis; isoelectric point; models; municipal wastewater; oxidation; pH; scanning electron microscopes; scanning electron microscopy; sorption isotherms; thermodynamics; transmission electron microscopy; zeta potential
- Abstract:
- ... A nanostructured Fe–Al–Mn trimetal oxide adsorbent for phosphate removal with a Fe:Al:Mn molar ratio of 3:3:1 was prepared using simultaneous oxidation and coprecipitation method. The adsorbent was characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscope (SEM) with an EDAX (energy dispersive analysis of X-ray). The results indicated that the ...
- DOI:
- 10.1016/j.powtec.2012.08.024
- https://doi.org/10.1016/j.powtec.2012.08.024
- Author:
- Qihua Cao; Ling Xiao; Liang Zeng; Chunhua Cao; Jian Wang
- Source:
- Powder technology 2017 v.321 pp. 1-8
- ISSN:
- 0032-5910
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; anions; chitosan; decolorization; energy-dispersive X-ray analysis; lighting; methyl orange; models; nanocomposites; pH; photocatalysis; photocatalysts; pollutants; powders; scanning electron microscopy; transmission electron microscopy
- Abstract:
- ... Ag3PO4/chitosan/CdS (Ag3PO4/CS/CdS) nanocomposites were achieved by in situ growth approach, and extensively characterized by FESEM, HRTEM, EDAX, FT-IR, XPS, XRD, BET, and UV-vis/DRS. The characterization results suggested that Ag3PO4 rhombic dodecahedron with size of 300−900 nm was wrapped in chitosan layer containing CdS in Ag3PO4/CS/CdS. The photocatalytic performance of Ag3PO4/CS/CdS nanocompo ...
- DOI:
- 10.1016/j.powtec.2017.08.015
- https://doi.org/10.1016/j.powtec.2017.08.015
- Author:
- Xin Jin; Weiquan Cai; Zhijun Cai
- Source:
- RSC advances 2017 v.7 no.84 pp. 53076-53086
- ISSN:
- 2046-2069
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; aluminum oxide; anions; chromium; coprecipitation; energy conservation; ligands; models; nitrogen; porous media; sorption isotherms; toxicity; transmission electron microscopy; wastewater; zeta potential
- Abstract:
- ... Ordered mesoporous alumina (MA) was successfully modified with three amino organosilanes including 3-aminopropyltriethoxysilane (1N), N-(β-aminoethyl)-γ-aminopropylmethylbimethoxysilane (2N) and N-3-trimethoxysilylpropyldiethylenetriamine (3N) via a facile grafting method, and the as-prepared amino organosilane grafted MA–1N, MA–2N and MA–3N show enhanced adsorption performance towards Cr(vi) remo ...
- DOI:
- 10.1039/c7ra10933d
- https://doi.org/10.1039/c7ra10933d
- Author:
- Cooper A. Voigt; Michael Ghidiu; Varun Natu; Michel W. Barsoum
- Source:
- Journal of physical chemistry 2018 v.122 no.40 pp. 23172-23179
- ISSN:
- 1932-7455
- Subject:
- X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; anions; carbides; cations; chemical analysis; energy-dispersive X-ray analysis; phosphoric acid; powders; washing
- Abstract:
- ... MXenes are a relatively new and large family of two-dimensional early transition-metal carbides derived typically by etching the MAX phases in fluoride-containing solutions. Although numerous studies have investigated the role of cations in the interlayer distance (d₀₀₀₂) between MXene multilayers (MLs), little is known about the role of anions. Herein, using mainly X-ray diffraction, the effect o ...
- DOI:
- 10.1021/acs.jpcc.8b07447
- https://doi.org/10.1021/acs.jpcc.8b07447
- Author:
- Kazem Godini; Mahsa Tahergorabi; Mohammad Naimi-Joubani; Mehdi Shirzad-Siboni; Jae-Kyu Yang
- Source:
- Environmental science and pollution research international 2020 v.27 no.3 pp. 2691-2706
- ISSN:
- 0944-1344
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; anions; aqueous solutions; catalysts; chromium; citric acid; copper; coprecipitation; electric power; electroplating; energy-dispersive X-ray analysis; hydrogen peroxide; nanorods; pH; scanning electron microscopy; sonocatalysis; ultrasonics; wastewater; zinc oxide
- Abstract:
- ... The aim of this research was to develop a simple and inexpensive process for reduction of Cr(VI) to Cr(III). Zinc oxide nanoparticles were synthesized with an easy co-precipitation procedure, and the addition of Cu²⁺ doping agent effectively enhanced the Cr(VI) reduction in the presence of ultrasound (US). XRD, FT-IR, FE-SEM, EDX, VSM, and XPS were used to determine the structural specifications o ...
- DOI:
- 10.1007/s11356-019-07165-9
- https://doi.org/10.1007/s11356-019-07165-9
- Author:
- Lin Sha; Zhemin Zou; Jun Qu; Xinfei Li; Yiyi Huang; Chenjie Wu; Zhigao Xu
- Source:
- Chemosphere 2020 v.260 pp. 127555
- ISSN:
- 0045-6535
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; agitation; anions; aqueous solutions; arsenites; drinking water; groundwater; irrigation; manufacturing; thermogravimetry; water purification
- Abstract:
- ... As (III) is widely distributed in groundwater which is relatively harder to be removed comparing to As (V). Co-grinding Ca(OH)₂ with Al(OH)₃ was conducted to manufacture katoite (Ca₃Al₂(OH)₁₂) for the complete removal of As(III) (concentration below drinking water standard of WHO (<10 ppb)) during one-step agitation operation. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR ...
- DOI:
- 10.1016/j.chemosphere.2020.127555
- https://doi.org/10.1016/j.chemosphere.2020.127555
- Author:
- Huiping Zeng; Can Yin; Tongda Qiao; Yaping Yu; Jie Zhang; Dong Li
- Source:
- ACS sustainable chemistry & engineering 2018 v.6 no.11 pp. 14734-14742
- ISSN:
- 2168-0485
- Subject:
- X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; anions; arsenic; bicarbonates; chlorides; ferric oxide; laboratory experimentation; magnetic materials; magnetic properties; magnetism; models; pH; phosphates; porous media; scanning electron microscopy; sludge; sorption isotherms; sulfates; surface area; water treatment
- Abstract:
- ... Magnetic particle adsorbent (MPA) was prepared using iron-containing sludge by solvothermal process for As(V) removal from the water solution. The magnetic property, structure features, and surface morphology of MPA were characterized by a vibrating-sample magnetometer, X-ray photoelectron spectroscopy, X-ray diffraction, scanning electron microscopy, and Brunauner–Emmett–Teller analysis. Laborato ...
- DOI:
- 10.1021/acssuschemeng.8b03270
- https://doi.org/10.1021/acssuschemeng.8b03270
- Author:
- Han, Ting; Fan, Tongxiang; Chow, Suk-Kwun; Zhang, Di
- Source:
- Bioresource technology 2010 v.101 no.17 pp. 6829-6835
- ISSN:
- 0960-8524
- Subject:
- X-ray diffraction; X-ray photoelectron spectroscopy; absorption; anions; cations; crops; crystals; irradiation; lamps; metals; nitrogen; oxides; phosphorus; red light; seeds
- Abstract:
- ... Four typical kinds of crop seeds are studied as non-metallic bio-precursors to synthesize biogenic N-P-codoped TiO₂ (BNP-TiO₂). The as-prepared BNP-TiO₂ samples are characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), nitrogen-adsorption measurement and UV-Vis spectroscopy. The results show that BNP-TiO₂ possesses single anatase phase with mesopore structures, and nitr ...
- DOI:
- 10.1016/j.biortech.2010.03.107
- https://doi.org/10.1016/j.biortech.2010.03.107
- Author:
- Gege Wu; Jiping Ma; Shasha Wang; Huining Chai; Liang Guo; Jinhua Li; Abbas Ostovan; Yafeng Guan; Lingxin Chen
- Source:
- Journal of hazardous materials 2020 v.394 pp. 122556
- ISSN:
- 0304-3894
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; anions; carboxylic acids; coordination polymers; detection limit; electrostatic interactions; herbicides; ionic strength; nuclear magnetic resonance spectroscopy; pH; pollutants; scanning electron microscopy; tandem mass spectrometry; thermoplastics; ultra-performance liquid chromatography
- Abstract:
- ... A novel kind of cationic metal-organic framework(MOF) based mixed-matrix membrane(MMM) namely cationic MOF-MMM was firstly designed and used for simultaneous dispersive membrane extraction(DME) of six phenoxy carboxylic acid(PCA) herbicides from water samples followed by determination using ultrahigh-performance liquid chromatography tandem mass spectrometry. The cationic MOF-MMM was synthesized b ...
- DOI:
- 10.1016/j.jhazmat.2020.122556
- https://doi.org/10.1016/j.jhazmat.2020.122556
- Author:
- Radha Sawana; Yogesh Somasundar; Venkatesh Shankar Iyer; Babita Baruwati
- Source:
- Applied water science 2017 v.7 no.3 pp. 1223-1230
- ISSN:
- 2190-5487
- Subject:
- Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; activated carbon; adsorbents; adsorption; anions; arsenic; batch systems; bicarbonates; calcium carbonate; ceric oxide; chlorides; drinking water; fluorides; hardness; humic acids; nitrates; pH; phosphates; salinity; sorption isotherms; sulfates; water hardness; water purification
- Abstract:
- ... Ceria (CeO₂) coated powdered activated carbon was synthesized by a single step chemical process and demonstrated to be a highly efficient adsorbent for the removal of both As(III) and As(V) from water without any pre-oxidation process. The formation of CeO₂ on the surface of powdered activated carbon was confirmed by X-ray diffraction, Raman spectroscopy and X-ray photoelectron spectroscopy. The p ...
- DOI:
- 10.1007/s13201-016-0398-z
- https://doi.org/10.1007/s13201-016-0398-z
- Author:
- Xilin Wu; Xiaoli Tan; Shitong Yang; Tao Wen; Hongli Guo; Xiangke Wang; Anwu Xu
- Source:
- Water research 2013 v.47 pp. 4159-4168
- ISSN:
- 0043-1354
- Subject:
- Fourier transform infrared spectroscopy; X-radiation; X-ray diffraction; X-ray photoelectron spectroscopy; absorption; adsorption; aluminum; anions; arsenic; binding sites; coagulation; cost effectiveness; drinking water; groundwater; humic acids; hydroxides; ion exchange; magnesium; scanning electron microscopy; transmission electron microscopy; China
- Abstract:
- ... In this study, nanocrystallined Mg/Al layered double hydroxides (LDH-CO3) and chloridion intercalated nanocrystallined Mg/Al LDHs (LDH-Cl) were synthesized and used for simultaneous removal of arsenic and natural organic matter (NOM) from contaminated groundwater. Humic acid (HA) was selected as a model compound of NOM. The maximum adsorption capacities of arsenate (As(V)) on LDH-CO3 and LDH-Cl ar ...
- DOI:
- 10.1016/j.watres.2012.11.056
- PubMed:
- 23582669
- https://doi.org/10.1016/j.watres.2012.11.056
- Author:
- Jingwen Pan; Baoyu Gao; Wen Song; Xing Xu; Bo Jin; Qinyan Yue
- Source:
- Journal of cleaner production 2019 v.213 pp. 762-775
- ISSN:
- 0959-6526
- Subject:
- Proteobacteria; X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; anions; biopolymers; chlorides; corn stover; ion exchange; magnetism; nitrates; pH; perchlorates; phosphates; scanning electron microscopy; sludge; surface area; transmission electron microscopy; zeta potential
- Abstract:
- ... A magnetized and quaternary amine-functionalized bio-resin derived from corn stalk (CS-MNB) was successfully synthesized and applied for perchlorate removal by combining of column adsorption and biological/chemical regeneration in presence of nitrate and phosphate. Characterization by SEM, TEM, XRD, Zeta potential, BET and XPS revealed that CS-MNB had well-developed pore structure, large surface a ...
- DOI:
- 10.1016/j.jclepro.2018.12.085
- https://doi.org/10.1016/j.jclepro.2018.12.085
- Author:
- Xueqiang Zhu; Baoping Han; Qiyan Feng
- Source:
- Water, air, and soil pollution 2020 v.231 no.4 pp. 138
- ISSN:
- 0049-6979
- Subject:
- X-ray diffraction; X-ray photoelectron spectroscopy; anions; bicarbonates; carbon tetrachloride; chlorides; corrosion; energy-dispersive X-ray analysis; ferric oxide; groundwater; iron; oxidants; remediation; scanning electron microscopy; sulfates; uncertainty
- Abstract:
- ... Significant attention has been devoted over the past two decades to research and field applications of zerovalent iron (ZVI) technologies for groundwater remediation. The uncertainty of ZVI effectiveness under complex subsurface environment will affect the application of ZVI remedial techniques. The effects of groundwater common anions Cl⁻, SO₄²⁻, and HCO₃⁻ on CCl₄ degradation by sponge ZVI were i ...
- DOI:
- 10.1007/s11270-020-04494-1
- https://doi.org/10.1007/s11270-020-04494-1
- Author:
- Lu Hongtao; Liu Shuxia; Zhang Hua; Qiu Yanling; Yin Daqiang; Zhao Jianfu; Zhu Zhiliang
- Source:
- RSC advances 2018 v.8 no.58 pp. 33301-33313
- ISSN:
- 2046-2069
- Subject:
- X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; anions; aqueous solutions; arsenates; arsenic; carbonates; chlorides; drinking water; equations; fluorides; nitrates; pH; pollutants; pollution; scanning electron microscopy; sorption isotherms
- Abstract:
- ... In this study, a series of MgAlFe-LDHs (Cl⁻, NO₃⁻, intercalation, and calcined products of a CO₃²⁻ interlayer) was synthesized and used for adsorption of arsenate and fluoride in individual contaminants and coexisting pollutant systems. Effects of various factors such as initial pH of solution, dosage of materials, coexisting ions, contact time, and initial pollutant concentrations were evaluated. ...
- DOI:
- 10.1039/c8ra05968c
- https://doi.org/10.1039/c8ra05968c
- Author:
- Fanglin Ming; Jingzhou Hou; Danqun Huo; Jun Zhou; Mei Yang; Caihong Shen; Suyi Zhang; Changjun Hou
- Source:
- Analytical methods 2019 v.11 no.34 pp. 4382-4389
- ISSN:
- 1759-9679
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; anions; aqueous solutions; atomic absorption spectrometry; cations; coordination compounds; copper; detection limit; environmental monitoring; fluorescence; iron; nanoparticles
- Abstract:
- ... A luminescent amino-functionalized metal–organic framework (Cu–MOFs) was synthesized from 2-aminoterephthalic acid and Cu(ii) ions by a solvothermal method. Cu–MOFs displayed blue fluorescence with a peak at 430 nm under 330 nm excitation. Its structure was characterized by FTIR, TEM, XRD, and XPS. The fluorescence of the Cu–MOFs was quenched by Fe³⁺ in aqueous solutions. The limit of detection wa ...
- DOI:
- 10.1039/c9ay01093a
- https://doi.org/10.1039/c9ay01093a
- Author:
- Gangyong Li; Jiguo Tu; Mingyong Wang; Shuqiang Jiao
- Source:
- Journal of materials chemistry A 2019 v.7 no.14 pp. 8368-8375
- ISSN:
- 2050-7496
- Subject:
- X-ray diffraction; X-ray photoelectron spectroscopy; acetylene; aluminum; ambient temperature; anions; anodes; batteries; cathodes; coatings; copper; electricity; ionic liquids; milling; oxidation; phosphides
- Abstract:
- ... Rechargeable aluminum-ion batteries (AIBs), using a room temperature ionic liquid as the electrolyte and metallic Al as the anode, are very promising alternatives for large-scale electricity storage due to abundant aluminum sources, their high specific capacity, and their high safety. Cathode materials with both high capacity and low cost are of great importance for the achievement of such applica ...
- DOI:
- 10.1039/c9ta00762h
- https://doi.org/10.1039/c9ta00762h
- Author:
- Xinjiang Hu; Yunlin Zhao; Hui Wang; Xiaoxi Cai; Xi Hu; Chunfang Tang; Yunguo Liu; Yuanxiu Yang
- Source:
- Journal of chemical technology and biotechnology 2018 v.93 no.8 pp. 2226-2233
- ISSN:
- 0268-2575
- Subject:
- X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; anions; chlorides; chromium; decontamination; electron transfer; energy-dispersive X-ray analysis; environmental factors; formates; graphene; iron; nitrates; nitrogen; pH; phosphates; photocatalysis; scanning electron microscopy; sulfates; thermodynamics; ultraviolet radiation; wastewater
- Abstract:
- ... BACKGROUND: In this study, a graphene oxide@TiO₂ composite (GO/TiO₂) was prepared and characterized by SEM, EDX, XRD, nitrogen adsorption–desorption isotherm, and XPS. Photocatalytic reduction and removal of Cr(VI) using this composite in an aerobic atmosphere were studied under UV irradiation. The effects of pH, ferric ions, inorganic anions, and formate were investigated systematically. RESULTS: ...
- DOI:
- 10.1002/jctb.5565
- https://doi.org/10.1002/jctb.5565
- Author:
- Zakir Hussain; Li Daosheng; Li Xi; Kang Jianxiong
- Source:
- RSC advances 2015 v.5 no.55 pp. 43906-43916
- ISSN:
- 2046-2069
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; aluminum; ambient temperature; anions; batch systems; composite materials; coprecipitation; defluoridation; drinking water; endothermy; energy-dispersive X-ray analysis; fluorides; hydrochloric acid; lanthanum; magnesium; methanol; pH; scanning electron microscopy; sorption isotherms
- Abstract:
- ... A study has been designed for a fluoride adsorbent synthesized by a co-precipitation approach of Mg(ii), Al(iii) and La(iii) salts (MAL) in 2 : 1 : 2 ratios. The prepared material illustrated relatively stable fluoride adsorption potential and an amorphous structure at temperatures lower than 600 °C. The defluoridation capacity of a 2 g L⁻¹ adsorbent dose at room temperature was observed to be bet ...
- DOI:
- 10.1039/c5ra05539c
- https://doi.org/10.1039/c5ra05539c
- Author:
- Ying Zeng; Na Guo; Xingjian Xu; Yong Yu; Quanying Wang; Na Wang; Xuerong Han; Hongwen Yu
- Source:
- Chemosphere 2019 v.227 pp. 589-597
- ISSN:
- 0045-6535
- Subject:
- X-ray diffraction; X-ray photoelectron spectroscopy; anions; bisphenol A; electron paramagnetic resonance spectroscopy; free radicals; gas chromatography-mass spectrometry; hydroxyl radicals; nanotubes; pH; photocatalysis; photocatalysts; photolysis; scanning electron microscopy; sulfates; superoxide anion; transmission electron microscopy
- Abstract:
- ... WO₃@MoS₂/Ag (HW@MA) hollow tubes were successfully engineered to photodegrade bisphenol A (BPA) combined with peroxymonosulfate (PMS) for the first time. XRD, XPS, TEM and SEM were conducted. The HW@MA tubes present excellent photocatalytic performance on the removal of BPA. The intermediate products of BPA were investigated by GC-MS analysis and the degradation pathway was proposed. To explore th ...
- DOI:
- 10.1016/j.chemosphere.2019.04.067
- https://doi.org/10.1016/j.chemosphere.2019.04.067
- Author:
- Haoyu Shen; Meina Sun; Meiqin Hu; Jinjin Cheng
- Source:
- RSC advances 2018 v.8 no.52 pp. 29928-29938
- ISSN:
- 2046-2069
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; anions; aqueous solutions; cross-linking reagents; electrostatic interactions; ion exchange; magnetism; models; pH; perchlorates; polymerization; polymers; sorption isotherms; ultrasonics
- Abstract:
- ... A series of ethylenediamine-grafted ion imprinted magnetic polymers (Fe₃O₄@IIPs) were synthesized via ultrasonic assisted suspension polymerization with perchlorate (ClO₄⁻) as an ion imprinting template. They were characterized by XRD, EA, VSM, FTIR and XPS and applied as adsorbents for ClO₄⁻ removal from aqueous solutions. The effects of the usage amount of crosslinking agent divinylbenzene (DVB) ...
- DOI:
- 10.1039/c8ra06085a
- https://doi.org/10.1039/c8ra06085a
- Author:
- Pengfei Qi; Rong Luo; Thomas Pichler; Jianqiang Zeng; Yan Wang; Yuhua Fan; Kunyan Sui
- Source:
- Journal of hazardous materials 2019 v.378 pp. 120721
- ISSN:
- 0304-3894
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; anions; antimony; aqueous solutions; arsenic; hydrogen bonding; iron oxides; magnetism; microparticles; models; pH; sorption isotherms; synergism; tannins; toxicity; transmission electron microscopy; wastewater
- Abstract:
- ... Removal of trivalent species of As and Sb from wastewater is crucial due to their more toxic and mobile properties. In this study, a novel magnetic core-shell microsphere Fe3O4@TA@UiO-66 was developed via in-situ crystal growth of UiO-66 around the magnetic Fe3O4 modified by Tannic Acid (TA). Characterization of the microsphere by transmission electron microscopy (TEM) and X-ray diffraction spectr ...
- DOI:
- 10.1016/j.jhazmat.2019.05.114
- https://doi.org/10.1016/j.jhazmat.2019.05.114
- Author:
- Tong Wen; Yunliang Zhao; Tingting Zhang; Bowen Xiong; Huimin Hu; Qiwu Zhang; Shaoxian Song
- Source:
- Chemosphere 2019 v.230 pp. 127-135
- ISSN:
- 0045-6535
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; anions; calcium carbonate; copper; energy-dispersive X-ray analysis; gerhardtite; nitrates; scanning electron microscopy; solubility; sulfates; wastewater
- Abstract:
- ... In this work, the wastewater containing sulfate ions, nitrate ions or chloride ions was used to investigate the performance of anions in copper removal by mechanically activated calcium carbonate. The copper removal from wastewater containing sulfate anion achieved almost 99% with the CaCO3/Cu molar ratio of 1:1. However, the copper removal from wastewater containing nitrate and chloride anions ar ...
- DOI:
- 10.1016/j.chemosphere.2019.04.213
- https://doi.org/10.1016/j.chemosphere.2019.04.213
- Author:
- Fang Zhu; Luwei Li; Wentao Ren; Xiaoqiang Deng; Tao Liu
- Source:
- Environmental pollution 2017 v.227 pp. 444-450
- ISSN:
- 0269-7491
- Subject:
- X-ray diffraction; X-ray photoelectron spectroscopy; activation energy; anions; bicarbonates; carbonates; chromium; endothermy; humic acids; iron; kinetics; nickel; nitrates; pH; scanning electron microscopy; soil remediation; soil temperature; sulfates; toxicity
- Abstract:
- ... Nano zero valent iron/Ni bimetal materials (nZVI/Ni) were prepared by borohydride reduction method to remediate toxic Cr(Ⅵ) contaminated in soil leachate. nZVI/Ni was characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray Photoelectron Spectroscopy (XPS). Different factors including pH value of soil leachate, reaction time, temperature, humic acid and coexisting ...
- DOI:
- 10.1016/j.envpol.2017.04.074
- https://doi.org/10.1016/j.envpol.2017.04.074
- Author:
- Muhammad Naveed Afridi; Won-Hee Lee; Jong-Oh Kim
- Source:
- Environmental research 2019 v.171 pp. 428-436
- ISSN:
- 0013-9351
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; anions; arsenic; cadmium; carbonates; chromium; citric acid; energy-dispersive X-ray analysis; eutrophication; foil; heavy metals; humic acids; iron; iron oxides; lead; models; nitrates; oxalic acid; phosphates; phosphorus; scanning electron microscopy; sorption isotherms; sulfates; wastewater
- Abstract:
- ... Phosphorus is a necessary nutrient for the growth and survival of living beings. Nevertheless, an oversupply of phosphorus in wastewater results in eutrophication. Therefore, its removal from wastewater is important. However, coexisting components, such as anions, heavy metals, and organic matter, might inhibit the phosphate-adsorption mechanism by competing for the active surface sites of the ads ...
- DOI:
- 10.1016/j.envres.2019.01.055
- https://doi.org/10.1016/j.envres.2019.01.055
- Author:
- Chong He; Zhiquan Yang; Jie Ding; Yuancai Chen; Xiaowen Tong; Ying Li
- Source:
- Colloids and surfaces 2017 v.520 pp. 448-458
- ISSN:
- 0927-7757
- Subject:
- Fourier transform infrared spectroscopy; X-radiation; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; anions; aqueous solutions; atomic force microscopy; chromium; energy-dispersive X-ray analysis; graphene oxide; models; pH; scanning electron microscopy; sorption isotherms; surface area; temperature; wastewater; zeta potential
- Abstract:
- ... In this study, 3-aminopropyltriethoxysilane-functionalized graphene oxide (AS-GO) was synthesized by one-step refluxing of graphene oxide (GO) with 3-aminopropyltriethoxysilane (AS). The properties of GO and AS-GO were characterized by scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), atomic force microscopy (AFM), Fourier transform infrared spectrum (FT-IR), X-ray diffr ...
- DOI:
- 10.1016/j.colsurfa.2017.01.086
- https://doi.org/10.1016/j.colsurfa.2017.01.086
- Author:
- D. M. Jia; C. H. Li; A. M. Li
- Source:
- RSC advances 2017 v.7 no.39 pp. 24430-24437
- ISSN:
- 2046-2069
- Subject:
- X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; anions; crosslinking; elemental composition; glyphosate; iron; models; pH; polystyrenes; scanning electron microscopy; sodium hydroxide; temperature; transmission electron microscopy; water pollution
- Abstract:
- ... The double valent composite resin (DR) was prepared within nano-sized Fe(ii) and Fe(iii) hydroxyl oxide crosslinking polystyrene anion exchanger resin for efficient glyphosate removal from water. The structure, morphology, Fe species, crystal phase, and elemental composition of the prepared DR composites were characterized using scanning electron microscopy (SEM), transmission electron microscopy ...
- DOI:
- 10.1039/c7ra03418k
- https://doi.org/10.1039/c7ra03418k
- Author:
- P.A. Nikulshin; D.I. Ishutenko; A.A. Mozhaev; K.I. Maslakov; A.A. Pimerzin
- Source:
- Journal of catalysis 2014 v.312 pp. 152-169
- ISSN:
- 0021-9517
- Subject:
- Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; ammonium; anions; catalysts; catalytic activity; catalytic cracking; chelating agents; cobalt; crystallites; gasoline; hydrogenation; salts; thiophene; transmission electron microscopy
- Abstract:
- ... CoMo/Al2O3 catalysts were synthesised from the ammonium and Co salts of [CoMo6O24H6]³⁻ and [Co2Mo10O38H4]⁶⁻ anions as well as Co–chelate complexes with nitrilotriacetic, ethylenediaminetetraacetic, citric and tartaric acids. The catalysts were characterised using X-ray powder diffraction, Raman spectroscopy, N2 physisorption, high-resolution transmission electron microscopy and X-ray photoelectron ...
- DOI:
- 10.1016/j.jcat.2014.01.014
- https://doi.org/10.1016/j.jcat.2014.01.014
- Author:
- Jialiang Liang; Fuyang Liu; Jun Deng; Mian Li; Meiping Tong
- Source:
- Water research 2017 v.123 pp. 632-641
- ISSN:
- 0043-1354
- Subject:
- Escherichia coli; Staphylococcus aureus; X-ray diffraction; X-ray photoelectron spectroscopy; anions; bacteria; chlorides; disinfection; energy-dispersive X-ray analysis; hydrogen peroxide; irradiation; nitrates; photocatalysts; photoluminescence; redox potential; reflectance spectroscopy; scanning electron microscopy; silver; sulfates; superoxide anion; transmission electron microscopes; transmission electron microscopy
- Abstract:
- ... A novel Z-scheme AgI/Bi₂MoO₆ hybrid photocatalyst was fabricated via a solvothermal-precipitation approach to disinfect bacteria in water. Powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopic (SEM) equipped with energy-dispersive X-ray spectroscopy (EDX), high resolution transmission electron microscope (HRTEM), UV-vis diffuse reflectance spectra (D ...
- DOI:
- 10.1016/j.watres.2017.06.060
- https://doi.org/10.1016/j.watres.2017.06.060
- Author:
- Wei Zheng; Qingda An; Zhimin Lei; Zuoyi Xiao; Shangru Zhai; Qiumei Liu
- Source:
- RSC advances 2016 v.6 no.106 pp. 104897-104910
- ISSN:
- 2046-2069
- Subject:
- Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; acid treatment; adsorption; anions; carbon; carbonization; chromium; electrostatic interactions; energy-dispersive X-ray analysis; moieties; nitrogen; pH; pyrolysis; redox reactions; scanning electron microscopy; sorbents; temperature; transmission electron microscopy
- Abstract:
- ... Chromium removal is of significance to our daily life; however, the fabrication of high-performance sorbents with practicality remains a challenge. Herein, alginate-derived carbon beads (Alg-CB-X) with a developed nano-network were successfully prepared through a simple carbothermal reduction at different carbonization temperatures and acid treatment. The aim of this material was for easy separati ...
- DOI:
- 10.1039/c6ra14070j
- https://doi.org/10.1039/c6ra14070j
- Author:
- Xiumei Chen; Wengang Zhang; Xueli Luo; Fan Zhao; Yixuan Li; Ronghua Li; Zhonghong Li
- Source:
- Chemosphere 2017 v.185 pp. 991-1000
- ISSN:
- 0045-6535
- Subject:
- Fourier transform infrared spectroscopy; World Health Organization; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; anions; aqueous solutions; calcium; carbonates; cations; chitosan; chlorides; chromium; copper; crosslinking; drinking water; magnesium; magnetite; nitrates; pH; potassium; scanning electron microscopy; sodium; sulfates; water purification; zinc; zirconium
- Abstract:
- ... Zirconium(IV) cross-linking chitosan (CTS) magnetic microspheres (Fe3O4@Zr-CTS) as a recoverable adsorbent were synthesized through the coordination reaction between zirconium oxychloride and CTS biopolymeric matrix for efficient adsorption and simultaneous detoxification of hexavalent chromium, Cr(VI), in aqueous solutions. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) confirmed ...
- DOI:
- 10.1016/j.chemosphere.2017.07.113
- https://doi.org/10.1016/j.chemosphere.2017.07.113
- Author:
- Yang Zhou; Min Huang; Xiaolei Wang; Juan Gao; Guodong Fang; Dongmei Zhou
- Source:
- Chemosphere 2020 v.253 pp. 126662
- ISSN:
- 0045-6535
- Subject:
- X-ray diffraction; X-ray photoelectron spectroscopy; anions; aqueous solutions; bicarbonates; calcium peroxide; catalysts; catalytic activity; chlorides; diethyl phthalate; electron paramagnetic resonance spectroscopy; free radicals; hydrogen peroxide; hydroxyl radicals; iron; nitrates; pH; polluted soils; pyrite; scanning electron microscopy; soil remediation; sulfates; sulfur
- Abstract:
- ... In this study, pyrite (FeS₂) was used as a novel activator of calcium peroxide (CaO₂) for the degradation of diethyl phthalate (DEP) in both aqueous solution and soil. DEP (10 mg/L) in aqueous solution was completely degraded within 5.0 min by the FeS₂ (0.30 g/L)/CaO₂ (1.0 mM) system at pH 3.5. X-ray diffraction (XRD), scanning electron microscopy (SEM), electron paramagnetic resonance (EPR), free ...
- DOI:
- 10.1016/j.chemosphere.2020.126662
- https://doi.org/10.1016/j.chemosphere.2020.126662
38. Enhanced Cr(VI) removal from acidic solutions using biochar modified by Fe3O4@SiO2-NH2 particles
- Author:
- Shunquan Shi; Jiakuan Yang; Sha Liang; Mingyang Li; Quan Gan; Keke Xiao; Jingping Hu
- Source:
- Science of the total environment 2018 v.628-629 pp. 499-508
- ISSN:
- 0048-9697
- Subject:
- X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; anions; biochar; carboxylation; cations; chelation; chemical bonding; chromium; iron; magnetic properties; magnetism; recycling; trees; wastewater
- Abstract:
- ... Fe₃O₄@SiO₂-NH₂ magnetic particles with core-shell structure were attached on carboxylated biochar derived from phoenix tree leaves to synthesize a novel magnetic biochar for removing Cr(VI) ions from acidic solutions. FSEM, FTEM, XRD characterizations of the synthesized magnetic biochar revealed that the Fe₃O₄@SiO₂-NH₂ magnetic particles distributed uniformly on the surface or macrospores of carbo ...
- DOI:
- 10.1016/j.scitotenv.2018.02.091
- https://doi.org/10.1016/j.scitotenv.2018.02.091
- Author:
- Zhang Yanyang; Pan Bingcai; Shan Chao; Gao Xiang
- Source:
- Environmental Science & Technology 2016 v.50 no.3 pp. 1447-1454
- ISSN:
- 1520-5851
- Subject:
- X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; anions; bicarbonates; chlorides; crosslinking; iron; nanocomposites; nanoparticles; nitrates; phosphates; polystyrenes; silicates; sulfates; water pollution
- Abstract:
- ... A new nanocomposite adsorbent La-201 of extremely high capacity and specific affinity toward phosphate was fabricated and well characterized, where hydrated La(III) oxide (HLO) nanoclusters were immobilized inside the networking pores of the polystyrene anion exchanger D-201. La-201 exhibited enhanced phosphate adsorption in the presence of competing anions (chloride, sulfate, nitrate, bicarbonate ...
- DOI:
- 10.1021/acs.est.5b04630
- https://doi.org/10.1021/acs.est.5b04630
- Author:
- Huashun Ji; Wenhao Wu; Feihu Li; Xiaoxue Yu; Jingjing Fu; Luyao Jia
- Source:
- Journal of hazardous materials 2017 v.334 pp. 212-222
- ISSN:
- 0304-3894
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; anion exchange; anions; aqueous solutions; differential scanning calorimetry; hydroxides; models; pH; porous media; scanning electron microscopy; sorption isotherms; surface area; thermogravimetry
- Abstract:
- ... An ordered mesoporous Mg-Al layered double hydroxide (meso-LDH350) with a fairly high Brunauer-Emmett-Teller (BET) surface area (126m²g⁻¹) has been facilely synthesized and then evaluated for the adsorptive removal of bromate from aqueous solutions. Adsorbents were characterized by a variety of techniques (e.g., XRD, FTIR, SEM, TG-DSC, N2 physisorption, XPS, etc.). The adsorption studies indicated ...
- DOI:
- 10.1016/j.jhazmat.2017.04.014
- https://doi.org/10.1016/j.jhazmat.2017.04.014
- Author:
- Zhenyuan Li; Zhidong Pan; Yanmin Wang
- Source:
- Environmental science and pollution research 2019 v.26 no.11 pp. 11126-11139
- ISSN:
- 1614-7499
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; anions; aqueous solutions; cations; chromium; clay; grinding; lead; models; nuclear magnetic resonance spectroscopy; particle size; particle size distribution; scanning electron microscopy; silicon; sorption isotherms; surface area; temperature; thermogravimetry
- Abstract:
- ... A raw illite-smectite mixed-layered clay (RI/S) was ground for preparing nano-sized I/S clay (NI/S) and subsequently amino-functionalized via grafting of 3-aminopropyltrithoxysilane (APTES) (NH₂-RI/S and NH₂-NI/S, respectively). The samples were characterized by particle size analysis, specific surface area measurement, X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric ...
- DOI:
- 10.1007/s11356-019-04447-0
- https://doi.org/10.1007/s11356-019-04447-0
- Author:
- Yi Wang; Dongfang Liu; Jianbo Lu; Jian Huang
- Source:
- Colloids and Surfaces A: Physicochemical and Engineering Aspects 2015 v.481 pp. 133-142
- ISSN:
- 0927-7757
- Subject:
- X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; anions; aqueous solutions; cetyltrimethylammonium bromide; chromium; coprecipitation; pH; porous media; scanning electron microscopes; scanning electron microscopy; sodium hydroxide; sulfates; zeta potential
- Abstract:
- ... Mesoporous iron–zirconium bimetal oxide (MIZO) which was templated by cetyltrimethylammonium bromide (CTAB) was facilely synthesized through co-precipitation for the first time. MIZO was applied in the adsorption of hexavalent chromium [Cr(VI)] in aqueous solutions, with comparison to ordinary iron–zirconium bimetal oxide (IZO). The properties of MIZO and IZO were characterized by N2 adsorption–de ...
- DOI:
- 10.1016/j.colsurfa.2015.01.060
- https://doi.org/10.1016/j.colsurfa.2015.01.060
- Author:
- Qian Zhao; Qingling Liu; Chunfeng Song; Na Ji; Degang Ma; Xuebin Lu
- Source:
- Chemosphere 2019 v.218 pp. 895-906
- ISSN:
- 0045-6535
- Subject:
- X-ray diffraction; X-ray photoelectron spectroscopy; acetone; air; anions; carbonates; catalysts; catalytic activity; cations; chlorides; coal; cobalt; ethyl acetate; industrial applications; manganese; manganese oxides; nitrates; oxidation; oxygen; potassium permanganate; sulfates; volatile organic compounds; water vapor
- Abstract:
- ... The MnOₓ was immobilized on the CoAl mixed oxides (CoAlO) derived from hydrotalcites with various anions (CO₃²⁻, Cl⁻, NO₃⁻ and SO₄²⁻) using the hydration and impregnation methods. The CoAlO oxides modified by KMnO₄ were calcined in air at 300 °C to obtain stable oxides, which could be used as catalysts for VOCs (acetone and ethyl acetate) oxidation. CoAlO with CO₃²⁻ and 30 h of hydration time (CoA ...
- DOI:
- 10.1016/j.chemosphere.2018.11.131
- https://doi.org/10.1016/j.chemosphere.2018.11.131
- Author:
- Yuxuan He; Liming Zhang; Xiao An; Gengping Wan; Wenjie Zhu; Yongming Luo
- Source:
- Science of the total environment 2019 v.688 pp. 184-198
- ISSN:
- 0048-9697
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray fluorescence spectroscopy; X-ray photoelectron spectroscopy; adsorbents; adsorption; aluminum oxide; anions; aqueous solutions; carbonates; cerium; chlorides; endothermy; fluorides; lanthanum; models; nitrates; pH; porous media; sorption isotherms; sulfates; thermodynamics; transmission electron microscopy
- Abstract:
- ... The removal of F− from aqueous solution using lanthanum and cerium modified mesoporous alumina (La/MA and Ce/MA) was studied, and characteration of the adsorbents by XRD, BET, XRF, FTIR, TEM, XPS and the pHZPC measurements were carried out. The adsorption was investigated in both batch and column adsorption systems. Batch experimental results showed that adsorption capacities of adsorbents were re ...
- DOI:
- 10.1016/j.scitotenv.2019.06.175
- https://doi.org/10.1016/j.scitotenv.2019.06.175
- Author:
- Shishu Zhu; Xiaochen Huang; Dawei Wang; Li Wang; Fang Ma
- Source:
- Chemosphere 2018 v.207 pp. 50-59
- ISSN:
- 0045-6535
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; anions; aqueous solutions; biochar; chromium; cost effectiveness; electrostatic interactions; groundwater; iron; magnetism; models; nanoparticles; nitrates; pH; phosphates; sorption isotherms; sulfates; tanneries; transmission electron microscopy; washing; wastewater; water pollution; water treatment
- Abstract:
- ... The superiority of the nanoscale zero valent iron (nZVI) assisted biochar (BC) composites compared to traditional nZVI and its application feasibility are still unclear. This study aimed to provide valuable information for practical application. Firstly, the Fe/BC mass ratio of 2:1 during the preparation of nZVI-BC was proved obtaining the complete Cr⁶⁺ removal. Then, results revealed that the ini ...
- DOI:
- 10.1016/j.chemosphere.2018.05.046
- https://doi.org/10.1016/j.chemosphere.2018.05.046
- Author:
- Hengli Qian; Qidong Hou; Guanjie Yu; Yifan Nie; Chuanyunlong Bai; Xinyu Bai; Meiting Ju
- Source:
- Journal of cleaner production 2020 v.273 pp. 123028
- ISSN:
- 0959-6526
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; anions; bicarbonates; catalysts; catalytic activity; chlorides; cobalt; desorption; dyes; filtration; hydroxyl radicals; iron; liquids; mineralization; nickel; nitrogen; organic matter; oxygen; pollutants; reaction kinetics; superoxide anion; surface area; tap water; transmission electron microscopy; wastewater
- Abstract:
- ... To achieve efficient degradation of dye in wastewater, the core-shell nickel cobalt spinel coated with iron phthalocyanine (NiCo₂O₄@FePc) catalyst was prepared via a facile template method and investigated as heterogenous catalyst for degradation of dye in Fenton process. The catalysts were systematically characterized by transmission electron microscopy (TEM), N₂ adsorption/desorption isotherms, ...
- DOI:
- 10.1016/j.jclepro.2020.123028
- https://doi.org/10.1016/j.jclepro.2020.123028
- Author:
- Xiangrui Kong; Jiehao Chen; Yunjia Tang; Yan Lv; Tan Chen; Hongtao Wang
- Source:
- Journal of hazardous materials 2020 v.392 pp. 122392
- ISSN:
- 0304-3894
- Subject:
- X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; anions; desorption; dissolved oxygen; groundwater; iron; pH; scanning electron microscopy; toxicity; vanadium
- Abstract:
- ... To reduce the toxicity of vanadium(V) [V(V)] and inhibit the desorption of adsorbed vanadium in groundwater, we synthesized nanoscale zerovalent iron (nZVI) dispersed on layered double hydroxide (LDH) composites (nZVI@LDH) to remove V(V) from simulated groundwater. We found that nZVI@LDH could reduce high-valence vanadium to low-valence vanadium, then forming vanadium-containing precipitation to r ...
- DOI:
- 10.1016/j.jhazmat.2020.122392
- https://doi.org/10.1016/j.jhazmat.2020.122392
- Author:
- Ping Mao; Ying Liu; Yan Jiao; Shouwen Chen; Yi Yang
- Source:
- Chemosphere 2016 v.164 pp. 396-403
- ISSN:
- 0045-6535
- Subject:
- X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; anions; carbonates; chlorides; iodides; nanoparticles; nitrates; pH; scanning electron microscopy; silver; sulfates
- Abstract:
- ... In order to improve the uptake capacity of Cu2O for I− anions from water, Ag loaded Cu2O composites have been synthesized through a facile method, characterized using SEM, XRD, XPS and applied to remove I− anions under different experimental environments. The results show that the uptake capacity of Ag@Cu2O increased with the increasing Ag doped amount. Meanwhile, the uptake capacity (0.20 mmol g− ...
- DOI:
- 10.1016/j.chemosphere.2016.08.116
- https://doi.org/10.1016/j.chemosphere.2016.08.116
- Author:
- Nanjing Zhong; Yue Li; Chunsheng Cai; Yongqing Gao; Ning Liu; Guoqin Liu; Wenying Tan; Yaoying Zeng
- Source:
- European journal of lipid science and technology 2018 v.120 no.4 pp. e1700357
- ISSN:
- 1438-7697
- Subject:
- Fourier transform infrared spectroscopy; Pseudozyma antarctica; X-ray diffraction; X-ray photoelectron spectroscopy; anions; carboxylic ester hydrolases; catalytic activity; cations; corn oil; diacylglycerols; enzyme activity; ionic liquids; porous media; silica; triacylglycerols
- Abstract:
- ... In this study, mesoporous silica SBA‐15 is modified by imidazole based ionic liquids (IL) with three different side‐chain length of cations and two different anions. Prepared supports (IL‐SBA‐15) are characterized by small‐angle powder X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy (XPS) as well as Fourier transform infrared (FT‐IR), and then used to immobilize Candida antarctica lipase ...
- DOI:
- 10.1002/ejlt.201700357
- https://doi.org/10.1002/ejlt.201700357
- Author:
- Fuhai Li; Hanqin Weng; Yun Shang; Zuoming Ding; Zheng Yang; Sheng Cheng; Mingzhang Lin
- Source:
- RSC advances 2017 v.7 no.6 pp. 3161-3169
- ISSN:
- 2046-2069
- Subject:
- X-ray diffraction; X-ray photoelectron spectroscopy; ambient temperature; anions; catalysts; catalytic activity; deprotonation; electrochemistry; ethanol; nanoparticles; oxidation; rhodium; transmission electron microscopy; ultraviolet-visible spectroscopy
- Abstract:
- ... Rhodium (Rh) is one of the most important catalyst constituents in many industrial catalytic processes. The synthesis of rhodium nanoparticles (RhNps) has received considerable interest for decades. In this paper, we report an environmentally friendly and facile synthesis route of RhNps through direct reduction of RhCl₃ by ethanol in an alkaline medium in the presence of PVP at room temperature, c ...
- DOI:
- 10.1039/c6ra26591j
- https://doi.org/10.1039/c6ra26591j
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