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You searched for: Subject cations Remove constraint Subject: cations Subject X-ray photoelectron spectroscopy Remove constraint Subject: X-ray photoelectron spectroscopy Subject absorption Remove constraint Subject: absorption Text Availability Citation in PubAg Remove constraint Text Availability: Citation in PubAg
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1. Enhanced removal of hydrogen sulfide using novel nanofluid system composed of deep eutectic solvent and Cu nanoparticles

Author:
Xinpeng Liu; Baohua Wang; Xiaoli Lv; Qingmei Meng; Menghong Li
Source:
Journal of hazardous materials 2021 v.405 pp. 124271
ISSN:
0304-3894
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; absorbents; absorption; cations; choline; copper nanoparticles; desulfurization; energy; ethanolamine; hydrogen sulfide; nanofluids; solvents; sulfur; transmission electron microscopes
Abstract:
... The H₂S removal performances of four deep eutectic solvent (DES) based nanofluid (NF) systems were measured using dynamic absorption experiment. The Cu containing NF system is found to be an excellent absorbent for H₂S removal with a significantly enhanced desulfurization performance compared with DES original solution. Besides, the NF systems have relatively high regeneration performance. The NF ...
DOI:
10.1016/j.jhazmat.2020.124271

2. Band Alignments, Band Gap, Core Levels, and Valence Band States in Cu₃BiS₃ for Photovoltaics

Author:
Thomas J. Whittles; Tim D. Veal; Christopher N. Savory; Peter J. Yates; Philip A. E. Murgatroyd; James T. Gibbon; Max Birkett; Richard J. Potter; Jonathan D. Major; Ken Durose; David O. Scanlon; Vinod R. Dhanak
Source:
ACS applied materials & interfaces 2019 v.11 no.30 pp. 27033-27047
ISSN:
1944-8252
Subject:
Raman spectroscopy; X-ray photoelectron spectroscopy; absorption; ambient temperature; bismuth; cadmium sulfide; cations; cleaning; copper; copper zinc tin sulfide; density functional theory; gallium; indium; ionization; models; solar energy; spectral analysis
Abstract:
... The earth-abundant semiconductor Cu₃BiS₃ (CBS) exhibits promising photovoltaic properties and is often considered analogous to the solar absorbers copper indium gallium diselenide (CIGS) and copper zinc tin sulfide (CZTS) despite few device reports. The extent to which this is justifiable is explored via a thorough X-ray photoemission spectroscopy (XPS) analysis: spanning core levels, ionization p ...
DOI:
10.1021/acsami.9b04268

3. Transition-Metal-Incorporated Aluminum Oxide Thin Films: Toward Electronic Structure Design in Amorphous Mixed-Metal Oxides

Author:
Lisa J. Enman; Matthew G. Kast; Elizabeth A. Cochran; Erica Pledger; Michaela Burke Stevens; Shannon W. Boettcher
Source:
Journal of physical chemistry 2018 v.122 no.25 pp. 13691-13704
ISSN:
1932-7455
Subject:
X-ray absorption spectroscopy; X-ray photoelectron spectroscopy; absorption; aluminum oxide; catalytic activity; cations; chromium; cobalt; copper; electronics; iron; manganese; metal ions; nickel; optical properties; oxidation; vanadium; zinc
Abstract:
... Amorphous metal oxides have numerous applications spanning from electronics to catalysis. The ability to rationally design the electronic structure of such materials would thus have significant impact. Previous work has shown that the amorphous structure allows for uniformly incorporating a large number of different metal cations into ultrasmooth thin films. Here we investigate how the atomic stru ...
DOI:
10.1021/acs.jpcc.8b00239

4. Enhanced CO catalytic oxidation by Sr reconstruction on the surface of LaxSr1−xCoO3−δ

Author:
Xiyang Wang; Keke Huang; Jingyu Qian; Yingge Cong; Chengda Ge; Shouhua Feng
Source:
Science bulletin 2017 pp. -
ISSN:
2095-9273
Subject:
X-radiation; X-ray photoelectron spectroscopy; absorption; annealing; carbon monoxide; catalytic activity; cations; chemical composition; engineering; hydrogen; oxidation; oxygen; reducing agents; strontium; temperature
Abstract:
... Surface electronic structure of solid materials plays a critical role in heterogeneous catalysis. However, surface chemical composition of the perovskite oxides is usually dominated by segregated A-site cations and the amount of oxygen vacancies is relatively low, which seriously restricts their catalytic oxidation property. Here, we prepare perovskite LaxSr1−xCoO3−δ (x=0.3, 0.5, 0.7) with differe ...
DOI:
10.1016/j.scib.2017.03.017

5. Observation of Photovoltaic Action from Photoacid-Modified Nafion Due to Light-Driven Ion Transport

Author:
White William; Sanborn Christopher D.; Reiter Ronald S.; Fabian David M.; Ardo Shane
Source:
Journal of the American Chemical Society 2017 v.139 no.34 pp. 11726-11733
ISSN:
1520-5126
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; absorption; anions; cations; chemical bonding; dyes; electric current; electrochemistry; ion exchange; ion-exchange membranes; lighting; polymers; temperature profiles
Abstract:
... Replacing passive ion-exchange membranes, like Nafion, with membranes that use light to drive ion transport would allow membranes in photoelectrochemical technologies to serve in an active role. Toward this, we modified perfluorosulfonic acid ionomer membranes with organic pyrenol-based photoacid dyes to sensitize the membranes to visible light and initiate proton transport. Covalent modification ...
DOI:
10.1021/jacs.7b00974

6. Local Fine Structural Insight into Mechanism of Electrochemical Passivation of Titanium

Author:
Wang Lu; Yu Hongying; Wang Ke; Xu Haisong; Wang Shaoyang; Sun Dongbai
Source:
ACS Applied Materials & Interfaces 2016 v.8 no.28 pp. 18608-18619
ISSN:
1944-8252
Subject:
X-radiation; X-ray absorption spectroscopy; X-ray photoelectron spectroscopy; absorption; bound water; cations; electrochemistry; models; prediction; sulfuric acid; titanium; titanium dioxide
Abstract:
... Electrochemically formed passive film on titanium in 1.0 M H₂SO₄ solution and its thickness, composition, chemical state, and local fine structure are examined by Auger electron spectroscopy (AES), X-ray photoelectron spectroscopy (XPS), and X-ray absorption fine structure. AES analysis reveals that the thickness and composition of oxide film are proportional to the reciprocal of current density i ...
DOI:
10.1021/acsami.6b05080

7. Photocatalytic degradation of two different types of dyes by synthesized La/Bi₂WO₆

Author:
Chunying Wang; Qingjiang Zhu; Chuantao Gu; Xianping Luo; Changlin Yu; Min Wu
Source:
RSC advances 2016 v.6 no.89 pp. 85852-85859
ISSN:
2046-2069
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; absorption; adsorption; bicarbonates; calcium; catalysts; cations; chlorides; dyes; hot water treatment; hydrogen peroxide; lanthanum; light; magnesium; metal ions; nitrates; pH; photocatalysis; potassium; rhodamines; scanning electron microscopy; sodium; solar radiation; sulfates; surface area; transmission electron microscopy
Abstract:
... A lanthanum doped Bi₂WO₆ composite (La/Bi₂WO₆) was prepared using a simple hydrothermal method. The synthesized samples were well characterized using XRD, SEM, TEM, UV-vis DRS, XPS, and BET analysis methods. The photocatalytic activities of La/Bi₂WO₆ on reactive brilliant red X-3B (X-3B) and rhodamine B (RhB), under simulated solar irradiation, were systematically investigated. As a result, the do ...
DOI:
10.1039/c6ra17798k

8. Effect of precursor concentration on the properties and tuning of conductivity between p-type and n-type Cu₁₋XCdXS₂ thin films deposited by a single step solution process as a novel material for photovoltaic applications

Author:
V. Nirmal Kumar; R. Suryakarthick; S. Karuppusamy; Mukul Gupta; Y. Hayakawa; R. Gopalakrishnan
Source:
RSC advances 2015 v.5 no.29 pp. 23015-23021
ISSN:
2046-2069
Subject:
Raman spectroscopy; X-ray photoelectron spectroscopy; absorption; adhesion; ambient temperature; cadmium; cations; color; copper; electrical properties; films (materials); solar cells; stoichiometry; sulfides
Abstract:
... Cu₁₋XCdXS₂ thin films were deposited from precursor solutions having different concentrations of cation sources, by a single step solution process at room temperature. The colours of the deposited films changed from light to dark brown based on the incorporation of copper and cadmium ions from the precursors. Cu₁₋XCdXS₂ polycrystalline thin films exhibit a hexagonal structure. Cd rich films showed ...
DOI:
10.1039/c4ra12565g

9. Structural characterization of Ag-doped TiO₂ with enhanced photocatalytic activity

Author:
Lidiaine M. Santos; Werick A. Machado; Marcela D. França; Karen A. Borges; Roberto M. Paniago; Antonio O. T. Patrocinio; Antonio E. H. Machado
Source:
RSC advances 2015 v.5 no.125 pp. 103752-103759
ISSN:
2046-2069
Subject:
Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; absorption; cations; cost effectiveness; crystal structure; heat treatment; hydrolysis; light; mineralization; nanoparticles; nanosilver; oxidation; oxygen; pH; particle size; photocatalysis; photocatalysts; silver; surface area; surface plasmon resonance; tartrazine; thermal degradation; titanium; titanium dioxide
Abstract:
... Ag-doped TiO₂ nanoparticles with different metallic content (0.5, 2.0, and 5.0% m/m) were prepared using a simple and cost-effective method based on the sol–gel technique, followed by thermal treatment. The addition of Ag⁺ ions during the hydrolysis/condensation of the Ti(iv) molecular precursor leads to homogeneous dispersion of the Ag⁺ cations on the titania matrix. As the amount of silver is in ...
DOI:
10.1039/c5ra22647c

10. Ionic Charge Transfer Complex Induced Visible Light Harvesting and Photocharge Generation in Perovskite

Author:
Ng Tsz-Wai; Thachoth Chandran Hrisheekesh; Chan Chiu-Yee; Lo Ming-Fai; Lee Chun-Sing
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.36 pp. 20280-20284
ISSN:
1944-8252
Subject:
X-ray photoelectron spectroscopy; absorption; anions; bromine; cations; dissociation; energy; iodine; lead; photoluminescence; photovoltaic cells
Abstract:
... Organometal trihalide perovskite has recently emerged as a new class of promising material for high efficiency solar cells applications. While excess ions in perovskites are recently getting a great deal of attention, there is so far no clear understanding on both their formation and relating ions interaction to the photocharge generation in perovskite. Herein, we showed that tremendous ions indee ...
DOI:
10.1021/acsami.5b05847

11. Intermediate band in the gap of photosensitive hybrid gel based on titanium oxide: role of coordinated ligands during photoreduction

Author:
Thomas Cottineau; Annabelle Rouet; Vincent Fernandez; Luc Brohan; Mireille Richard-Plouet
Source:
Journal of materials chemistry A 2014 v.2 no.29 pp. 11499-11508
ISSN:
2050-7496
Subject:
X-ray photoelectron spectroscopy; absorption; cations; deprotonation; gels; ligands; photosensitivity; titanium; titanium dioxide; ultraviolet radiation; ultraviolet-visible spectroscopy
Abstract:
... UV light induced chemical modifications of a new hybrid organic–inorganic gel, based on titanium oxide and obtained by a soft chemistry method, are studied by XPS and UV-visible spectroscopy. XPS experiments, with an in situ UV illumination design, were performed in order to study the different chemical modifications of the gel. The Ti⁴⁺ to Ti³⁺ reduction, as well as the associated change in the l ...
DOI:
10.1039/c4ta02127d

12. One-Step Hydrothermal Synthesis of Manganese-Containing MFI-Type Zeolite, Mn–ZSM-5, Characterization, and Catalytic Oxidation of Hydrocarbons

Author:
Meng Yongtao; Genuino Homer C.; Kuo Chung-Hao; Huang Hui; Chen Sheng-Yu; Zhang Lichun; Rossi Angelo; Suib Steven L.
Source:
Journal of the American Chemical Society 2013 v.135 no.23 pp. 8594-8605
ISSN:
1520-5126
Subject:
Raman spectroscopy; X-ray photoelectron spectroscopy; absorption; benzaldehyde; benzyl alcohol; carbon dioxide; catalytic activity; cations; color; data collection; energy-dispersive X-ray analysis; gases; manganese; manganese oxides; models; optical properties; oxidation; oxygen production; pH; reflectance spectroscopy; salts; scanning electron microscopy; temperature; toluene; transmission electron microscopy; zeolites
Abstract:
... Manganese-containing MFI-type Mn–ZSM-5 zeolite was synthesized by a facile one-step hydrothermal method using tetrapropylammonium hydroxide (TPAOH) and manganese(III)-acetylacetonate as organic template and manganese salts, respectively. A highly crystalline MFI zeolite structure was formed under pH = 11 in 2 days, without the need for additional alkali metal cations. Direct evidence of the incorp ...
DOI:
10.1021/ja4013936

13. Ultrathin Antifouling Coatings with Stable Surface Zwitterionic Functionality by Initiated Chemical Vapor Deposition (iCVD)

Author:
Yang Rong; Gleason Karen K.
Source:
Langmuir 2012 v.28 no.33 pp. 12266-12274
ISSN:
1520-5827
Subject:
X-ray photoelectron spectroscopy; absorption; air; antifouling agents; bovine serum albumin; calcium; cations; coatings; contact angle; fouling; humic acids; nanofibers; quartz crystal microbalance; reverse osmosis; sodium alginate; storage time; vapors; zwitterions
Abstract:
... Antifouling thin films of poly[N,N-dimethyl-N-methacryloxyethyl-N-(3-sulfopropyl)-co-2-(dimethylamino)ethyl methacrylate-co-ethylene glycol dimethacrylate] (PDDE) were synthesized via a substrate-independent and all-dry-initiated chemical vapor deposition (iCVD) technique followed by a diffusion-limited vapor-phase reaction with 1,3-propane sultone. Coated surfaces exhibited very low absorption of ...
DOI:
10.1021/la302059s

14. Evidence of high rate visible light photochemical decolourisation of Rhodamine B with BiFeO₃ nanoparticles associated with BiFeO₃ photocorrosion

Author:
Chang Hengky; Xavier Moya; Neil D. Mathur; Steve Dunn
Source:
RSC advances 2012 v.2 no.31 pp. 11843-11849
ISSN:
2046-2069
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; absorption; cations; decolorization; dyes; iron; irradiation; light; lighting; nanoparticles; pH; photochemistry; rhodamines; semiconductors; titanium dioxide
Abstract:
... BiFeO₃ nanopowders with a size distribution around 20 nm and optical absorption onset at 2.1 eV have been synthesized using self-combustion. These particles were used to photodecolourise Rhodamine B (RhB) dye under a solar simulator with AM1.5 irradiation. XRD analysis after illumination showed no change while XPS analysis on the particles showed significant changes to the chemical state of the Fe ...
DOI:
10.1039/c2ra22211f

15. Biogenic N-P-codoped TiO₂: Synthesis, characterization and photocatalytic properties

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