Action Spectra and the Mechanism of Photoinduced Formation of Hydrogen and Oxygen on Potassium Niobates Full article
Journal |
High Energy Chemistry
ISSN: 0018-1439 |
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Output data | Year: 2009, Volume: 43, Number: 1, Pages: 34-37 Pages count : 4 DOI: 10.1134/S0018143909010056 | ||
Tags | Spectral Dependence; Action Spectrum; High Energy Chemistry; Effective Quantum Yield; Hydrogen Evolution Rate | ||
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Abstract:
Powdered samples of complex oxides-potassium niobates with a layered structure were prepared via high-temperature synthesis followed by grinding. The action spectra of photoinduced processes on potassium niobates with different phase compositions in aqueous and aquo-organic systems were determined. It was shown that the evolution of oxygen was due to its photodesorption and occurred upon illumination with light at an energy near the edge of intrinsic niobate absorption. The formation of hydrogen in aqueous systems is due to the photocatalytic dehydrogenation of trace organic compounds adsorbed on potassium niobate, rather than to the photodecomposition of water. The quantum efficiency of the photocatalytic dehydrogenation increased by an order of magnitude when hydrogen-containing organic compounds were added to the reaction mixture.
Cite:
Zakharenko V.S.
, Bogdanov S.V.
Action Spectra and the Mechanism of Photoinduced Formation of Hydrogen and Oxygen on Potassium Niobates
High Energy Chemistry. 2009. V.43. N1. P.34-37. DOI: 10.1134/S0018143909010056 WOS Scopus РИНЦ
Action Spectra and the Mechanism of Photoinduced Formation of Hydrogen and Oxygen on Potassium Niobates
High Energy Chemistry. 2009. V.43. N1. P.34-37. DOI: 10.1134/S0018143909010056 WOS Scopus РИНЦ
Original:
Захаренко В.С.
, Богданов С.В.
Спектры действия и механизм фотоиндуцированного образования водорода и кислорода на ниобатах калия
Химия высоких энергий. 2009. Т.43. №1. С.37-40. РИНЦ
Спектры действия и механизм фотоиндуцированного образования водорода и кислорода на ниобатах калия
Химия высоких энергий. 2009. Т.43. №1. С.37-40. РИНЦ
Dates:
Submitted: | Feb 29, 2008 |
Accepted: | Jul 7, 2008 |
Published print: | Jan 1, 2009 |
Published online: | Feb 8, 2009 |
Identifiers:
Web of science | WOS:000263160400005 |
Scopus | 2-s2.0-59849087700 |
Elibrary | 13614607 |
Chemical Abstracts | 2009:162267 |
Chemical Abstracts (print) | 152:203020 |
OpenAlex | W2041550770 |
Citing:
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