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Journal of Photonics for Energy • Open Access

Silver- and copper-modified decahedral anatase titania particles as visible light-responsive plasmonic photocatalyst
Author(s): Marcin Janczarek; Zhishun Wei; Maya Endo; Bunsho Ohtani; Ewa Kowalska

Paper Abstract

Decahedral anatase particles (DAPs) with eight equivalent (101) facets and two (001) facets were prepared by the gas-phase process. Monometallic and bimetallic photocatalysts were prepared by photodeposition of silver and copper on DAP. It was found that the method of metal deposition (sequential/simultaneous) is crucial for resultant properties and thus for photocatalytic performance. The fastest hydrogen evolution during metal deposition was observed for copper deposited on premodified DAP with silver (DAP/Ag/Cu), probably due to partial coverage of silver with fine clusters of Cu and thus facilitation of proton adsorption and reduction on well-dispersed Cu nanoclusters. Although DAP/Ag/Cu exhibited the fastest rate of hydrogen evolution, single-modified DAP with silver exhibited the best performance for oxidative decomposition of organic compounds under vis irradiation.

Paper Details

Date Published: 21 September 2016
PDF: 16 pages
J. Photon. Energy 7(1) 012008 doi: 10.1117/1.JPE.7.012008
Published in: Journal of Photonics for Energy Volume 7, Issue 1
Show Author Affiliations
Marcin Janczarek, Hokkaido Univ. (Japan)
Gdansk Univ. of Technology (Poland)
Zhishun Wei, Hokkaido Univ. (Japan)
Maya Endo, Hokkaido Univ. (Japan)
Bunsho Ohtani, Hokkaido Univ. (Japan)
Ewa Kowalska, Hokkaido Univ. (Japan)

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