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You searched for: Subject term annealing Remove constraint Subject term: annealing Subject term Fourier transform infrared spectroscopy Remove constraint Subject term: Fourier transform infrared spectroscopy Subject term X-ray diffraction Remove constraint Subject term: X-ray diffraction Subject term X-ray photoelectron spectroscopy Remove constraint Subject term: X-ray photoelectron spectroscopy Text availability Citation in PubAg Remove constraint Text availability: Citation in PubAg
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1. Enhanced Thermal Protection of Iron Oxide Nanoparticle by Insulating Nanoporous Char Layer: Effect of Core Size and Char Layer Properties

Author:
C. Anushree; D. Nanda Gopala Krishna; B. B. Lahiri; John Philip
Source:
Journal of physical chemistry 2020 v.124 no.10 pp. 5702-5714
ISSN:
1932-7455
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; annealing; carboxymethylcellulose; insulating materials; iron; magnetite; nanocomposites; nanoparticles; nanopores; particle size; physical chemistry; temperature; theoretical models; thermal degradation; thermal stability; thermogravimetry; transmission electron microscopy
Abstract:
... We report an enhanced thermal insulation of Fe₃O₄ nanoparticle by nanoporous char layer formed during thermal decomposition of Fe₃O₄@carboxymethyl cellulose. The role of char layer properties, decomposition pathways at different Fe³⁺/Fe²⁺ ratio, and the initial core size on thermal stability are evaluated using XRD, HRTEM, SAXS, TGA, FTIR, XPS, and laser Raman scattering. In situ high temperature ...
DOI:
10.1021/acs.jpcc.9b11660

2. Photocatalytic activity of SnO2-TiO2 composite nanoparticles modified with PVP

Author:
Dana Toloman; Ovidiu Pana; Maria Stefan; Adriana Popa; Cristian Leostean; Sergiu Macavei; Dan Silipas; Ioana Perhaita; Mihaela Diana Lazar; Lucian Barbu-Tudoran
Source:
Journal of colloid and interface science 2019 v.542 pp. 296-307
ISSN:
0021-9797
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; air; annealing; chemical precipitation; deodorization; dyes; electron paramagnetic resonance spectroscopy; energy; hydrogen production; irradiation; moieties; nanoparticles; oxidation; photocatalysis; polyvinylpyrrolidone; porosity; surface area; thermogravimetry; tin dioxide; titanium dioxide; transmission electron microscopy; water purification
Abstract:
... Interface modified SnO2-TiO2 composite nanoparticles were produced in two stages: first SnO2 nanoparticles were prepared by chemical precipitation in the presence of polyvinylpyrrolidone (PVP) and thermally treated at 500 °C then TiO2 was deposited on top of modified SnO2 and followed by a final annealing. As a consequence SnO2–TiO2 composite nanoparticles get crystallized while PVP is decomposed ...
DOI:
10.1016/j.jcis.2019.02.026

3. Strong adsorption of tetracycline hydrochloride on magnetic carbon-coated cobalt oxide nanoparticles

Author:
Guanrong Yang; Qiongzhi Gao; Siyuan Yang; Shiheng Yin; Xin Cai; Xiaoyuan Yu; Shengsen Zhang; Yueping Fang
Source:
Chemosphere 2020 v.239 pp. 124831
ISSN:
0045-6535
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; annealing; aqueous solutions; carbon; cobalt oxide; ecosystems; electrostatic interactions; heat production; human health; magnetism; nanoparticles; pH; scanning electron microscopy; sorption isotherms; temperature; tetracycline; transmission electron microscopy; wastewater; zeta potential
Abstract:
... The overuse of antibiotics, including tetracycline hydrochloride (TC), seriously threatens human health and ecosystems. In this work, magnetic carbon-coated cobalt oxide nanoparticles (CoO@C) were prepared by one-step annealing method and used as an adsorbent for efficient removal of TC from aqueous solution. The characteristic of the materials was studied by SEM, TEM, and XRD, revealing CoO nanop ...
DOI:
10.1016/j.chemosphere.2019.124831

4. The enhancement of mechanical properties of P84 hollow fiber membranes by thermally annealing below and above Tg

Author:
Lujie Sheng; Jizhong Ren; Kaisheng Hua; Hui Li; Yuxuan Feng; Maicun Deng
Source:
Journal of membrane science 2019 pp. -
ISSN:
0376-7388
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; annealing; artificial membranes; crosslinking; gel chromatography; mass spectrometry; modulus of elasticity; molecular weight; scanning electron microscopy; spinning; temperature; tensile strength; thermogravimetry
Abstract:
... In this paper, BTDA-TDI/MDI (P84) co-polyimide hollow fiber membranes (HFMs) were prepared by dry-jet wet spinning technique. The P84 HFMs were thermally annealed below and above P84 Tg (321.5 °C) to investigate their mechanical properties and gas separation properties. Thermally annealing at different temperature below and above Tg influenced the tensile strength, Young's modulus and the elongati ...
DOI:
10.1016/j.memsci.2019.117580

5. Annealing effects on the structural and dielectric properties of (Nb + In) co-doped rutile TiO₂ ceramics

Author:
Lanling Zhao; Jun Wang; Zhigang Gai; Jichao Li; Jian Liu; Jiyang Wang; Chunlei Wang; Xiaolin Wang
Source:
RSC advances 2019 v.9 no.15 pp. 8364-8368
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; air; annealing; ceramics; density functional theory; dielectric permittivity; dielectric properties; oxygen; titanium dioxide
Abstract:
... Density functional theory calculations were conducted to investigate the electronic structures of rutile Ti₁₆O₃₂, Ti₁₃Nb₂InO₃₂, and Ti₁₃Nb₂InO₃₁ systems. High density (Nb + In) co-doped rutile TiO₂ ceramics were successfully prepared by one modified solid state method. XRD, XPS, Raman scattering and FT-IR measurements were performed to investigate the structural properties of the (Nb + In) co-dope ...
DOI:
10.1039/c9ra00564a

6. Phosphorous-doped TiO2 nanoparticles: synthesis, characterization, and visible photocatalytic evaluation on sulfamethazine degradation

Author:
Sandra Yadira Mendiola-Alvarez; Ma. Aracely Hernández-Ramírez; Jorge Luis Guzmán-Mar; Lorena Leticia Garza-Tovar; Laura Hinojosa-Reyes
Source:
Environmental science and pollution research 2019 v.26 no.5 pp. 4180-4191
ISSN:
0944-1344
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; ammonium; annealing; catalysts; chemical bonding; crystallites; ion exchange chromatography; microwave treatment; mineralization; nanoparticles; nitrates; nitrogen; pH; particle size; phosphates; phosphorus; photocatalysis; photoluminescence; porous media; reflectance; scanning electron microscopy; sol-gel processing; sulfamethazine; sulfates; sulfur; surface area; temperature; titanium; titanium dioxide
Abstract:
... Mesoporous phosphorous-doped TiO₂ (TP) with different wt% of P (0.5, 1.0, and 1.5) was synthetized by microwave-assisted sol–gel method. The obtained materials were characterized by XRD with cell parameters refinement approach, Raman, BET-specific surface area analysis, SEM, ICP-OES, UV–Vis with diffuse reflectance, photoluminescence, FTIR, and XPS. The photocatalytic activity under visible light ...
DOI:
10.1007/s11356-018-2314-6

7. Preparation of oxygen-deficient 2D WO3−x nanoplates and their adsorption behaviors for organic pollutants: equilibrium and kinetics modeling

Author:
Wenjie Pu; Zhilong Song; Jia Yan; Hui Xu; Haiyan Ji; Shouqi Yuan; Huaming Li
Source:
Journal of materials science 2019 v.54 no.19 pp. 12463-12475
ISSN:
0022-2461
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; air; annealing; equations; filtration; methyl orange; methylene blue; models; nitrogen; oxygen; pollutants; pollution control; rhodamines; sorption isotherms; temperature; tungsten oxide; wastewater treatment
Abstract:
... A novel oxygen defect-rich WO₃₋ₓ nanoplates were synthesized using a solvothermal method followed by an annealing treatment under Ar–H₂ gas mixture atmosphere. WO₃₋ₓ nanoplates possess large numbers of oxygen defects systematically demonstrated by the elemental analysis, X-ray diffraction, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy, respectively. The adsorption ca ...
DOI:
10.1007/s10853-019-03780-6

8. Relationships between Structure, Composition, and Electrochemical Properties in LiNiₓMn₂–ₓO₄ [x = 0.37, 0.43, 0.49, 0.52, and 0.56] Spinel Cathodes for Lithium Ion Batteries

Author:
Dongsheng Lu; Jianglong Li; Jia He; Ruirui Zhao; Yuepeng Cai
Source:
Journal of physical chemistry 2019 v.123 no.14 pp. 8522-8530
ISSN:
1932-7455
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; annealing; cathodes; cooling; electrochemistry; ions; lithium; lithium batteries; manganese; nickel; oxygen; physical chemistry; scanning electron microscopy
Abstract:
... A series of off-stoichiometric LiNiₓMn₂–ₓO₄ (x = 0.37, 0.43, 0.49, 0.52, and 0.56) spinels are prepared by adjusting Mn/Ni molar ratio and are used to investigate the correlations between Mn³⁺ content, structural ordering degree, oxygen vacancies, impurities, and electrochemical properties in these spinels through inductive coupled plasma atomic emission spectroscopy, scanning electron microscopy, ...
DOI:
10.1021/acs.jpcc.8b11085

9. Thermo-Oxidative Aging of LDPE/Stearoyl Chloride-Grafted Cellulose Nanocrystals Blown Films

Author:
Nora M. Moo-Tun; A. Valadez-Gonzalez; J. A. Uribe-Calderon
Source:
Journal of polymers and the environment 2019 v.27 no.6 pp. 1226-1239
ISSN:
1566-2543
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; annealing; atomic force microscopy; biodegradation; carboxylic acids; catalytic activity; cellulose; chlorides; contact angle; crystal structure; energy; hydrophobicity; molecular weight; nanocrystals; oxidation; polyethylene; thermal stability; thermogravimetry
Abstract:
... The effect of the incorporation of pristine and stearoyl chloride grafted CNCs on the chemical, mechanical, thermal and microstructural properties, during the thermo-oxidative aging, of LDPE blown films at 60 °C was studied. The success of the pristine CNCs grafting was assessed by Fourier transform infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), The ...
DOI:
10.1007/s10924-019-01424-z

10. Annealing of silicon carbonitride nanostructured thin films: interdependency of hydrogen content, optical, and structural properties

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

11. Thermally treated ammonia functionalized graphene oxide/polyimide membranes for pervaporation dehydration of isopropanol

Author:
Peyman Salehian; Tai-Shung Chung
Source:
Journal of membrane science 2017 v.528 pp. 231-242
ISSN:
0376-7388
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; ammonia; annealing; asymmetric membranes; crosslinking; graphene oxide; isopropyl alcohol; microstructure; moieties; permeability; pervaporation; polymers; scanning electron microscopy; solvents; temperature
Abstract:
... A novel mixed matrix membrane (MMM) consisting of a cross-linkable 6FDA polyimide matrix and ammonia functionalized graphene oxide (NHGO) particles has been molecularly designed at elevated temperatures for water/IPA separation. The reaction scheme was proposed and evidenced by FTIR and XPS analyses. The evolution of microstructure changes in each step of MMM formation was systematically studied b ...
DOI:
10.1016/j.memsci.2017.01.038

12. Tuning Composition of Electrospun ZnO/CuO Nanofibers: Toward Controllable and Efficient Solar Photocatalytic Degradation of Organic Pollutants

Author:
Naseri Amene; Samadi Morasae; Mahmoodi Niyaz Mohammad; Pourjavadi Ali; Mehdipour Hamid; Moshfegh Alireza Z.
Source:
The Journal of Physical Chemistry C 2017 v.121 no.6 pp. 3327-3338
ISSN:
1932-7455
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; air; annealing; bisphenol A; chemical bonding; crystal structure; cupric oxide; electric current; energy; hydroxyl radicals; irradiation; methylene blue; nanofibers; photocatalysis; photoluminescence; pollutants; polymers; reflectance spectroscopy; scanning electron microscopy; solar radiation; zinc oxide
Abstract:
... ZnO/CuO nanofibers, with different CuO concentrations, were fabricated by one-step electrospinning of the polymer precursor and annealing in air. Scanning electron microscopy (SEM) showed smooth and beadless morphology for the synthesized nanofibers, while X-ray diffraction (XRD) analysis revealed formation of hexagonal and monoclinic crystalline structure phases for ZnO and CuO nanofibers, respec ...
DOI:
10.1021/acs.jpcc.6b10414

13. Understanding the Thermal Treatment Effect of Two-Dimensional Siloxene Sheets and the Origin of Superior Electrochemical Energy Storage Performances

Author:
Parthiban Pazhamalai; Karthikeyan Krishnamoorthy; Surjit Sahoo; Vimal Kumar Mariappan; Sang-Jae Kim
Source:
ACS applied materials & interfaces 2018 v.11 no.1 pp. 624-633
ISSN:
1944-8252
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; annealing; capacitance; dehydrogenation; electrochemistry; energy conversion; energy density; heat treatment; ionic liquids; materials science; moieties; temperature
Abstract:
... Two-dimensional siloxene sheets are an emerging class of materials with an eclectic range of potential applications including electrochemical energy conversion and storage sectors. Here, we demonstrated the dehydrogenation/dehydroxylation of siloxene sheets by thermal annealing at high temperature (HT) and investigated their supercapacitive performances using ionic liquid electrolyte. The X-ray di ...
DOI:
10.1021/acsami.8b15323

14. A novel strategy for the synthesis of sulfur-doped carbon nanotubes as a highly efficient Pt catalyst support toward the methanol oxidation reaction

Author:
Jing-Jing Fan; You-Jun Fan; Rui-Xiang Wang; Sheng Xiang; Hua-Guo Tang; Shi-Gang Sun
Source:
Journal of materials chemistry A 2017 v.5 no.36 pp. 19467-19475
ISSN:
2050-7496
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; annealing; carbon nanotubes; catalysts; durability; electrochemistry; electron transfer; fuel cells; graphene; methanol; nanohybrids; nanoparticles; oxidation; platinum; sulfur; surface area; transmission electron microscopy
Abstract:
... Doped nanocarbon materials (e.g., carbon nanotubes, graphene) are considered as effective electrocatalyst supports for fuel cells, and their electrochemical properties are closely related to the synthetic methods and the types of doping elements. In the current paper, we report a novel approach to synthesize sulfur-doped multi-walled carbon nanotubes (S-MWCNTs) as a highly efficient support materi ...
DOI:
10.1039/c7ta05102f

15. Controllable synthesis and enhanced gas sensing properties of a single-crystalline WO₃–rGO porous nanocomposite

Author:
Qin Hao; Tie Liu; Jingyuan Liu; Qi Liu; Xiaoyan Jing; Hongquan Zhang; Guoqing Huang; Jun Wang
Source:
RSC advances 2017 v.7 no.23 pp. 14192-14199
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; annealing; chemical composition; crystal structure; graphene; graphene oxide; nanocomposites; nitrogen dioxide; pollutants; temperature; transmission electron microscopy; tungsten oxide; volatile organic compounds
Abstract:
... In this paper, we report on a facile hydrothermal approach combined with a subsequent annealing process for the controllable synthesis of a single-crystalline WO₃–rGO porous nanocomposite. The crystal structure, morphology and chemical composition of the as-obtained product were well-characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, Fourier tra ...
DOI:
10.1039/c6ra28379a

16. Soft Chemical Fabrication of Iron-Based Thin Film Electrocatalyst for Water Oxidation under Neutral pH and Structure–Activity Tuning by Cerium Incorporation

Author:
Saha Jony; Radhakrishnan T. P.
Source:
Langmuir 2017 v.33 no.34 pp. 8372-8382
ISSN:
1520-5827
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; annealing; catalysts; cerium; chemical analysis; cost effectiveness; electrochemistry; electron microscopy; glass; iron; nitrogen; oxidation; oxygen production; pH; phosphates; porosity; surface area
Abstract:
... Design of electrocatalysts for the fundamentally important oxygen evolution reaction can be greatly aided by systematic structure–activity tuning via composition variation. We have explored the iron–cerium system as they are the most abundant transition and rare earth metals, and also due to the mutualistic impact of their size and electronic attributes that can induce critical changes in the stru ...
DOI:
10.1021/acs.langmuir.7b01647

17. Structural and Electrical Characterization of SiO2 Gate Dielectrics Deposited from Solutions at Moderate Temperatures in Air

Author:
Esro Mazran; Kolosov Oleg; Jones Peter J.; Milne William I.; Adamopoulos George
Source:
ACS Applied Materials & Interfaces 2017 v.9 no.1 pp. 529-536
ISSN:
1944-8252
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; air; annealing; dielectrics; hysteresis; oxidation; pyrolysis; silica; silicon; stoichiometry; temperature; ultraviolet-visible spectroscopy
Abstract:
... Silicon dioxide (SiO₂) is the most widely used dielectric for electronic applications. It is usually produced by thermal oxidation of silicon or by using a wide range of vacuum-based techniques. By default, the growth of SiO₂ by thermal oxidation of silicon requires the use of Si substrates whereas the other deposition techniques either produce low quality or poor interface material and mostly req ...
DOI:
10.1021/acsami.6b11214

18. Synthesis, characterization, and ammonia gas sensing properties of Co3O4@CuO nanochains

Author:
Jiao Zhou; Jiawei Zhang; Afrasiab Ur Rehman; Kan Kan; Li Li; Keying Shi
Source:
Journal of materials science 2017 v.52 no.7 pp. 3757-3770
ISSN:
0022-2461
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; ambient temperature; ammonia; annealing; cobalt; crosslinking; cupric oxide; electrical properties; metal ions; nanoparticles; polyvinylpyrrolidone; scanning electron microscopy; transmission electron microscopy
Abstract:
... The Co₃O₄@CuO composite nanochains (CCNCs) were fabricated by electrospinning approach and controlled annealing route. The formation of nanochains was attributed to the interactions between N,N-Dimethylformamide and metal ions (Cu²⁺ or Co²⁺) acted as a cross-linking point or a bridge among the entangled polyvinylpyrrolidone (PVP) chains. The calcined samples were composed of porous single-crystal ...
DOI:
10.1007/s10853-016-0561-9

19. Boron/phosphorus doping for retarding the oxidation of reduced graphene oxide

Author:
Bihe Yuan; Weiyi Xing; Yixin Hu; Xiaowei Mu; Junling Wang; Qilong Tai; Guojun Li; Lu Liu; Kim Meow Liew; Yuan Hu
Source:
Carbon 2016 v.101 pp. 152-158
ISSN:
0008-6223
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; active sites; annealing; boric acid; boron; gasification; graphene; graphene oxide; oxidation; oxidative stability; phosphoric acid; phosphorus; temperature; transmission electron microscopy; weight loss
Abstract:
... B, N- and P, N-doped reduced graphene oxide (RGO) are prepared through high temperature annealing method using boric acid and phosphoric acid as the B and P sources, respectively. The synthesized RGO and dual-doped RGO are well characterized by Fourier transform infrared spectroscopy, X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy and transmission electron microscopy. The ...
DOI:
10.1016/j.carbon.2016.01.080

20. Formation of larger-area graphene from small GO sheets in the presence of basic divalent sulfide species and its use in biomass conversion

Author:
Xuyan Wang; Kunmei Su; Zhenhuan Li; Bowen Cheng
Source:
RSC advances 2016 v.6 no.14 pp. 11176-11184
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; annealing; biomass; cellobiose; cellulose; electrical conductivity; fructose; glucose; graphene; graphene oxide; heat; hydroxymethylfurfural; mass spectrometry; organic matter; scanning electron microscopy; thermogravimetry; transmission electron microscopy; ultraviolet-visible spectroscopy
Abstract:
... Basic divalent sulfide species exhibit unique chemical activity in that they react with organic matter and function as a redox reagent. Herein, graphene oxide (GO) was modified by basic divalent sulfide species, and the modified materials were characterized by FT-IR spectra, XRD, UV-Vis, SEM, HRTEM, XPS, TG-MS analysis, Raman spectroscopy and electrical conductivity measurements. The results indic ...
DOI:
10.1039/c5ra24287h