Silver- and copper-modified decahedral anatase titania particles as visible light-responsive plasmonic photocatalyst

Marcin Janczarek; Zhishun Wei; Maya Endo; Bunsho Ohtani; Ewa Kowalska

doi:10.1117/1.JPE.7.012008

21 September 2016 Silver- and copper-modified decahedral anatase titania particles as visible light-responsive plasmonic photocatalyst

Marcin Janczarek, Zhishun Wei, Maya Endo, Bunsho Ohtani, Ewa Kowalska

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Journal of Photonics for Energy, Vol. 7, Issue 1, 012008 (September 2016). https://doi.org/10.1117/1.JPE.7.012008

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.

CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Marcin Janczarek, Zhishun Wei, Maya Endo, Bunsho Ohtani, and Ewa Kowalska "Silver- and copper-modified decahedral anatase titania particles as visible light-responsive plasmonic photocatalyst," Journal of Photonics for Energy 7(1), 012008 (21 September 2016). https://doi.org/10.1117/1.JPE.7.012008

Published: 21 September 2016

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KEYWORDS

Copper

Silver

Metals

Particles

Titanium

Oxygen

Hydrogen

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