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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 Subject X-ray diffraction Remove constraint Subject: X-ray diffraction
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1. 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

2. 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

3. 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

4. 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

5. 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