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- Author:
- Bo Yang; Shuanghong Zhang; Jing Lv; Shuang Li; Yangyang Shi; Dechao Hu; Wenshi Ma
- Source:
- Journal of materials science 2021 v.56 no.7 pp. 4615-4623
- ISSN:
- 0022-2461
- Subject:
- Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; atomic force microscopy; chemical bonding; choline chloride; dispersibility; graphene; nanosheets; raw materials; solvents; thermal stability; thermogravimetry; transmission electron microscopy; urea
- Abstract:
- ... To promote the industrial applications of graphene, it is crucial to develop a low-cost, green, and efficient production method. A practical and eco-friendly deep eutectic solvent-assisted ball milling technique was developed to prepare multi-layer graphene in this study. The expanded graphite was used as raw material, and the deep eutectic solvent was prepared by mixing urea and choline chloride. ...
- DOI:
- 10.1007/s10853-020-05209-x
- https://doi.org/10.1007/s10853-020-05209-x
- Author:
- Wei Qu; Deliang He; Haihong Huang; Yanni Guo; Yining Tang; Ren-Jie Song
- Source:
- Journal of materials science 2020 v.55 no.17 pp. 7268-7282
- ISSN:
- 0022-2461
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; chemical bonding; crosslinking; crystal structure; dyes; endothermy; epichlorohydrins; kinetics; methyl orange; models; pH; scanning electron microscopy; sorption isotherms; surface area; temperature; thermodynamics; thermogravimetry
- Abstract:
- ... The adsorption behavior and mechanism of amino-crosslinked hypromellose (AHM) adsorbent crosslinked with epichlorohydrin and modified with diethylenetriamine were studied. This material is unprecedented, and the modification method used to obtain it is relatively simple. The parameters affecting the adsorption of methyl orange (MO) dye by AHM such as pH, adsorbent dosage, contact time, initial con ...
- DOI:
- 10.1007/s10853-020-04517-6
- https://doi.org/10.1007/s10853-020-04517-6
- Author:
- Fang Xu; Ling Zhong; Yuan Xu; Shaoyang Feng; Cheng Zhang; Fengxiu Zhang; Guangxian Zhang
- Source:
- Journal of materials science 2019 v.54 no.2 pp. 1884-1897
- ISSN:
- 0022-2461
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; cellulose; chemical bonding; combustion; crystal structure; energy-dispersive X-ray analysis; flame retardants; flammability; kraft paper; nitrogen; oxygen; phosphorus; scanning electron microscopy; temperature; thermogravimetry
- Abstract:
- ... The flame resistance of kraft paper was greatly modified by an eco-friendly, phosphorus-containing and reactive flame retardant, ammonium phosphite, which was grafted on kraft paper via pad-bake method. The results showed that the limiting oxygen index of treated kraft paper could increase from 19.1 to 48.2%. The results of vertical flammability tests imply that the char length of treated sample d ...
- DOI:
- 10.1007/s10853-018-2911-2
- https://doi.org/10.1007/s10853-018-2911-2
- Author:
- Yahui Lyu; Chenglin Gu; Jiaping Tao; Xue Yao; Guang Zhao; Caili Dai
- Source:
- Journal of materials science 2019 v.54 no.24 pp. 14752-14762
- ISSN:
- 0022-2461
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; acrylamides; chemical bonding; graphene oxide; heat tolerance; microstructure; oils; polyacrylamide; salt tolerance; temperature; thermogravimetry
- Abstract:
- ... The temperature resistance, shear stability and salinity tolerance of the polymer are crucial as a chemical agent for enhanced oil recovery (EOR) involving high-temperature and high-salinity reservoirs. In this work, triethoxyvinylsilane (VTEO) molecules were first covalently bound to the surface of the graphene oxide (GO) to synthesize the sGO, and then, the sGO was copolymerized with acrylamide ...
- DOI:
- 10.1007/s10853-019-03967-x
- https://doi.org/10.1007/s10853-019-03967-x
- Author:
- Onur Yildirim; Burak Derkus
- Source:
- Journal of materials science 2020 v.55 no.7 pp. 3034-3044
- ISSN:
- 0022-2461
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; biosensors; carcinogenesis; catalytic activity; chemical bonding; detection limit; electrochemistry; electrodes; energy; models; nuclear magnetic resonance spectroscopy; organic compounds; porous media; superoxide anion; superoxide dismutase; surface area; transmission electron microscopy
- Abstract:
- ... Covalent organic frameworks (COFs) are crystalline nano/microporous materials assembled from organic molecules through covalent bonds. Having various advantages such as large surface area, fully conjugated structure, and being in atom-thick dimensions makes COFs a promising candidate for numerous applications such as energy storage, electrocatalysis, and electrochemical devices. Yet, their potenti ...
- DOI:
- 10.1007/s10853-019-04254-5
- https://doi.org/10.1007/s10853-019-04254-5
- Author:
- Tao Liu; Yulian Li; Junyong He; Kaisheng Zhang; Yi Hu; Xifan Chen; Chengming Wang; Xingjiu Huang; Lingtao Kong; Jinhuai Liu
- Source:
- Journal of materials science 2019 v.54 no.7 pp. 5366-5380
- ISSN:
- 0022-2461
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; atomic force microscopy; boron nitride; cadmium; chemical bonding; copper; heavy metals; lead; metal ions; models; moieties; nanosheets; nickel; pH; scanning electron microscopy; sorption isotherms; surface area
- Abstract:
- ... Newly few-layered boron nitride (BN-550) nanosheets were developed by a low-temperature synthesis method, which was used to rapidly and efficiently adsorb lead ions (Pb²⁺). The samples were characterized by using XRD, FT-IR, EELS, SEM, TEM, AFM and XPS, revealing that it possessed the large specific surface area (696 m² g⁻¹), ultrathin sheet structure (1.2 nm thickness), and abundant chemical bond ...
- DOI:
- 10.1007/s10853-018-03240-7
- https://doi.org/10.1007/s10853-018-03240-7
- Author:
- Shadi Rasoul Pour; Amir Abdolmaleki; Mohammad Dinari
- Source:
- Journal of materials science 2019 v.54 no.4 pp. 2885-2896
- ISSN:
- 0022-2461
- Subject:
- Fourier transform infrared spectroscopy; Lewis bases; X-ray diffraction; aromatic compounds; byproducts; catalysts; catalytic activity; chemical bonding; copper; copper nanoparticles; cyclohexenes; energy-dispersive X-ray analysis; epoxidation reactions; epoxides; esterification; graphene oxide; leaching; ligands; moieties; nanosheets; olefin; oxidation; scanning electron microscopy; schiff bases; temperature; thermogravimetry
- Abstract:
- ... A new heterogeneous copper–salophen catalyst was fabricated through the nucleophilic attack and esterification reaction of salophen Schiff base with graphene oxide (GO). At first HO-terminated Schiff base was prepared via a stepwise procedure. Subsequently, the Schiff base was covalently grafted to the activated carboxyl group on GO through esterification reaction and also through the nucleophilic ...
- DOI:
- 10.1007/s10853-018-3035-4
- https://doi.org/10.1007/s10853-018-3035-4
- Author:
- Manman Jin; Zhenmei Guo; Zhiguo Lv
- Source:
- Journal of materials science 2019 v.54 no.9 pp. 6853-6866
- ISSN:
- 0022-2461
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; catalysts; catalytic activity; chemical bonding; hydrogen peroxide; hydrophilicity; hydrophobicity; ligands; moieties; nitrogen; nuclear magnetic resonance spectroscopy; oxidation; porous media; silica; silicon; sorption; transmission electron microscopy; tungsten
- Abstract:
- ... An efficient hybrid mesoporous heterogeneous catalyst system was synthesized via covalently grafting tungsten chelate complex W-N,N (N,N = (3-triethoxysilylpropyl) [3-(2-pyridyl)-1-pyrazolyl] acetamide, N,N-chelating ligand) in organic moieties (diphenyldichlorosilane, DPHS)-functionalized mesoporous silica SBA-15 or pure SBA-15. Characterization of synthesized materials via N₂ sorption, XRD, TEM, ...
- DOI:
- 10.1007/s10853-019-03361-7
- https://doi.org/10.1007/s10853-019-03361-7
- Author:
- Xiaoyu Wang; Yang Zhang; Siqun Wang; Hua Jiang; Shuang Liu; Yuan Yao; Tianmeng Zhang; Qian Li
- Source:
- Journal of materials science 2018 v.53 no.18 pp. 13304-13315
- ISSN:
- 0022-2461
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; acid hydrolysis; aerogels; carbon dioxide; cellulose; chemical bonding; combs (social insects); freeze drying; hydrogels; nanocrystals; nuclear magnetic resonance spectroscopy; porosity; scanning electron microscopy; surface area; temperature; thermogravimetry
- Abstract:
- ... In this work, cellulose nanocrystal (CNC) was prepared from microcrystalline cellulose (MCC) by acid hydrolysis method. The N-(2-aminoethyl)(3-aminopropyl) methyldimethoxysilane (AEAPMDS)-CNC aerogel was successfully fabricated either by freeze-drying or supercritical CO₂ drying of spherical CNC hydrogels into which the amine group has been successfully introduced via C–O–Si bonds between CNC and ...
- DOI:
- 10.1007/s10853-018-2595-7
- https://doi.org/10.1007/s10853-018-2595-7
- Author:
- Z. Khatami; C. Nowikow; J. Wojcik; P. Mascher
- Source:
- Journal of materials science 2018 v.53 no.2 pp. 1497-1513
- ISSN:
- 0022-2461
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; annealing; chemical bonding; coatings; desorption; hydrogen; photovoltaic cells; quantitative analysis; refractive index; silicon; silicon carbide; temperature; transmission electron microscopy; vapors
- Abstract:
- ... Silicon carbonitride (SiCₓNy) materials, inspired by their outstanding multifunctional properties, are finding increasing applications in a variety of fields, including as next generation solar cells and hard coatings. Hydrogenated SiCₓNy thin films, along with binary submatrices of stoichiometric SiC and SiN₃ as a reference, were deposited using electron cyclotron resonance plasma-enhanced chemic ...
- DOI:
- 10.1007/s10853-017-1576-6
- https://doi.org/10.1007/s10853-017-1576-6
- Author:
- S. Breitfeld; G. Scholz; F. Emmerling; E. Kemnitz
- Source:
- Journal of materials science 2018 v.53 no.19 pp. 13682-13689
- ISSN:
- 0022-2461
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; acetates; ammonium; barium; carboxylic acids; chemical bonding; coordination polymers; differential thermal analysis; dimethyl sulfoxide; fluorides; fluorine; hydrogen; intermediate product; mechanochemistry; metal ions; milling; nuclear magnetic resonance spectroscopy; thermogravimetry; washing
- Abstract:
- ... A new barium coordination polymer, BaF-benzenedicarboxylate (BaF(p-BDC)₀.₅), with fluorine directly coordinated to the metal cation, was prepared by mechanochemical synthesis routes. Phase-pure BaF-benzenedicarboxylate was synthesized by milling starting either from barium hydroxide or from barium acetate as sources for barium cations. In both cases, the second reactant was 1,4-benzenedicarboxylic ...
- DOI:
- 10.1007/s10853-018-2331-3
- https://doi.org/10.1007/s10853-018-2331-3
- Author:
- Hao Li; Yanzi Gou; Shugang Chen; Hao Wang
- Source:
- Journal of materials science 2018 v.53 no.15 pp. 10933-10945
- ISSN:
- 0022-2461
- Subject:
- Fourier transform infrared spectroscopy; UHT treatment; X-ray diffraction; ammonia; annealing; ceramics; chemical bonding; crosslinking; diamines; gases; melting point; methane; moieties; nuclear magnetic resonance spectroscopy; polymerization; polymers; pyrolysis; scanning electron microscopy; separation; temperature; transmission electron microscopy; zirconium
- Abstract:
- ... Soluble and meltable Zr-containing preceramic polymers were synthesized in this work by the polymerization of ZrCl₄ and different diamines, followed by preparation of Zr(C, N) multinary ceramics via pyrolysis. The composition, structure and morphology were investigated by Fourier transform infrared spectroscopy, nuclear magnetic resonance, as well as thermogravimetric-mass spectrometry, X-ray diff ...
- DOI:
- 10.1007/s10853-018-2382-5
- https://doi.org/10.1007/s10853-018-2382-5
- Author:
- Xiaozhou Wang; Hao Wang; Jun Shi
- Source:
- Journal of materials science 2018 v.53 no.16 pp. 11242-11252
- ISSN:
- 0022-2461
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; boron; ceramics; chemical bonding; crosslinking; crystallization; crystals; dehydrogenation; gel chromatography; heat; heat treatment; liquids; nuclear magnetic resonance spectroscopy; polymers; scanning electron microscopy; silicon nitride; thermogravimetry; transmission electron microscopy; viscosity
- Abstract:
- ... A liquid polymeric precursor to SiBCN ceramics was synthesized via dehydrogenation of polymethylsilane and borazine. The resulting precursor, its ceramic conversion, and its pyrolytic products were investigated via viscosity testing, gel permeation chromatography, Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, thermogravimetric analysis, X-ray diffraction, scanni ...
- DOI:
- 10.1007/s10853-018-2452-8
- https://doi.org/10.1007/s10853-018-2452-8
- Author:
- Mann Rekha; Kiranmala Laishram; Ravi Kumar Gupta; Neelam Malhan; Ashok Kumar Satsangi
- Source:
- Journal of materials science 2009 v.44 no.16 pp. 4252-4257
- ISSN:
- 0022-2461
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; carbon nitrogen ratio; chemical bonding; citrates; citric acid; combustion; crystallization; differential thermal analysis; drying; energy efficiency; equations; gels; heat treatment; nanocrystals; nitrates; oxygen; particle size; temperature; thermogravimetry; transmission electron microscopy
- Abstract:
- ... A novel method for the synthesis of nanocrystalline neodymium-doped yttria (Nd:Y₂O₃) by gel combustion in microwave without long period of calcination at high temperature is described. The method leads to rapid formation of phase pure product with saving of time and energy. Gels were prepared by selecting citrate to nitrate (C/N) ratios of 0.5:1 & 1:1 followed by combustion in microwave for drying ...
- DOI:
- 10.1007/s10853-009-3615-4
- https://doi.org/10.1007/s10853-009-3615-4
- Author:
- Liangping Xiong; Yunshu Xu; Yang Li; Xiulong Xia
- Source:
- Journal of materials science 2008 v.43 no.14 pp. 4849-4855
- ISSN:
- 0022-2461
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; air; argon (noble gases); ceramics; chemical bonding; crosslinking; gels; heat tolerance; heat treatment; irradiation; nitrogen; oxidation; oxygen; pyrolysis; silicon carbide; synthetic fibers; tensile strength
- Abstract:
- ... Polycarbosilane (PCS) ceramic precursor fibers are irradiated in a nuclear reactor and pyrolyzed under inert atmosphere. Bridge structure of Si–CH₂–Si is formed in the irradiated products by the rupture of Si–H bonds and succeeding cross-linking. When irradiated at the neutron fluence of 2.2 × 10¹⁷ cm⁻² under N₂ atmosphere, the gel content and ceramic yield at 1,273 K of PCS fibers are up to 80% a ...
- DOI:
- 10.1007/s10853-008-2703-1
- https://doi.org/10.1007/s10853-008-2703-1
- Author:
- Guangjun Hu; Xiangfu Meng; Xiyan Feng; Yanfen Ding; Shimin Zhang; Mingshu Yang
- Source:
- Journal of materials science 2007 v.42 no.17 pp. 7162-7170
- ISSN:
- 0022-2461
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; carbon nanotubes; chemical bonding; nanofibers; nanoparticles; nitrogen; photocatalysis; photovoltaic cells; polymers; pyrrolidones; scanning electron microscopy; titanium dioxide; transmission electron microscopy; water purification
- Abstract:
- ... In the present work, we report the preparation and photocatalytic properties of hybrid nanofibers/mats of anatase TiO₂ nanoparticles and multi-walled carbon nanotubes (MWNTs) using combined sol–gel and electrospinning techniques. Poly(vinyl pyrrolidone) is used as a base polymer in the electrospinning suspension to assist the formation of nanofibers and subsequently removed by calcination. The hyb ...
- DOI:
- 10.1007/s10853-007-1609-7
- https://doi.org/10.1007/s10853-007-1609-7
- Author:
- D. L. Yu; J. L. He; Z. Y. Liu; B. Xu; D. C. Li; Y. J. Tian
- Source:
- Journal of materials science 2008 v.43 no.2 pp. 689-695
- ISSN:
- 0022-2461
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; chemical bonding; combustion; crystal structure; energy-dispersive X-ray analysis; melamine; phase transition; photoluminescence; pyrolysis; temperature; ultraviolet radiation
- Abstract:
- ... Pyrolysis experiments of melamine were carried out under high pressure of 5 GPa and different temperatures. The crystal structure, chemical bonding, and composition of the melamine pyrolysate were studied by X-ray diffraction (XRD), Fourier transform infrared spectra (FTIR), X-ray photoelectron spectroscopy (XPS), X-ray energy-dispersive analysis (EDX), and combustion elemental analysis. A new C–N ...
- DOI:
- 10.1007/s10853-007-2148-y
- https://doi.org/10.1007/s10853-007-2148-y
- Author:
- Debasish Sarkar; Deepak Mohapatra; Sambarta Ray; Santanu Bhattacharyya; Sukumar Adak; Niren Mitra
- Source:
- Journal of materials science 2007 v.42 no.5 pp. 1847-1855
- ISSN:
- 0022-2461
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; aluminum oxide; boehmite; chemical bonding; differential thermal analysis; gels; microstructure; phase transition; photographs; powders; scanning electron microscopy; thermogravimetry; transmission electron microscopy; zirconium; zirconium oxide
- Abstract:
- ... Al₂O₃–ZrO₂ composite gel powder was prepared by sol–gel route. The gel precursor compositions were preferred to achieve yield of 5–15 mol% zirconia after calcination of respective powders. The precursor gel was characterized by Differential Thermal Analysis (DTA)/Thermo Gravimetric (TG), IR and X-ray Diffraction study (XRD). The analysis reveal the gel contained pseudoboehmite and amorphous Zr(OH) ...
- DOI:
- 10.1007/s10853-006-0737-9
- https://doi.org/10.1007/s10853-006-0737-9
- Author:
- Young-Geun Kwon; Se-Young Choi; Eul-Son Kang; Seung-Su Baek
- Source:
- Journal of materials science 2000 v.35 no.24 pp. 6075-6079
- ISSN:
- 0022-2461
- Subject:
- silica; X-ray diffraction; surface area; porosity; titanium dioxide; ambient temperature; gels; chemical bonding; Fourier transform infrared spectroscopy; heat treatment; insulating materials; drying; ethanol; washing
- Abstract:
- ... Two step-derived SiO₂ sol doped with TiO₂ powder dissolved in ethanol was prepared. After aging and washing of wet gel, surface modification with TMCS (trimethylchlorosilane) was followed to prevent additional condensation reaction during drying. Ambient-dried SiO₂-TiO₂ gel was heat-treated at various temperatures. The effects of the heat-treated temperature on the chemical bonding state of SiO₂-T ...
- DOI:
- 10.1023/A:1026775632209
- https://doi.org/10.1023/A:1026775632209
- Author:
- S KANNAN; C. S SWAMY
- Source:
- Journal of materials science 1997 v.32 no.6 pp. 1623-1630
- ISSN:
- 0022-2461
- Subject:
- Fourier transform infrared spectroscopy; X-ray diffraction; absorption; aluminum; cations; chemical bonding; chromium; cobalt; coprecipitation; crystal structure; differential scanning calorimetry; energy-dispersive X-ray analysis; iron; surface area; thermal stability; thermogravimetry; transmission electron microscopy; wavelengths
- Abstract:
- ... A series of cobalt containing hydrotalcites having the general formula CoMCO3-HT where M = Al, Fe and Cr were synthesized by sequential and coprecipitation methods. The samples were primarily characterized by X-ray diffraction (XRD), infrared absorption studies, transmission electron microscopy-energy dispersive X-ray analysis (TEM-EDAX), thermogravimetry-differential scanning calorimetry (TG-DSC) ...
- DOI:
- 10.1023/A:1018599211053
- https://doi.org/10.1023/A:1018599211053