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Materials 2017, 10(4), 331; doi:10.3390/ma10040331

Photocatalytic Water Splitting for O2 Production under Visible Light Irradiation Using NdVO4-V2O5 Hybrid Powders

Department of Energy Engineering, National United University, Lienda, Nan-Shi Li, Miaoli 36006, Taiwan
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Author to whom correspondence should be addressed.
Academic Editor: Greta Ricarda Patzke
Received: 17 January 2017 / Revised: 13 March 2017 / Accepted: 20 March 2017 / Published: 23 March 2017
(This article belongs to the Section Manufacturing Processes and Systems)
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Abstract

The study investigated photocatalytic water splitting for O2 production under visible light irradiation using neodymium vanadium oxide (NdVO4) and vanadium oxide (V2O5) hybrid powders. The results in a sacrificial agent of 0.01 M AgNO3 solution were obtained, and the highest photocatalytic O2 evolution was 2.63 μmol/h, when the hybrid powders were prepared by mixing Nd and V at a volume ratio of 1:3 at a calcination temperature of 350 °C for 1 h. The hybrid powders were synthesized by neodymium nitrate and ammonium metavanadate using the glycothermal method in ethylene glycol at 120 °C for 1 h. The hybrid powders consisted of two shapes, NdVO4 nanoparticles and the cylindrical V2O5 particles, and they possessed the ability for photocatalytic oxygen (O2) evolution during irradiation with visible light. The band gaps and structures of the hybrid powders were analyzed using UV-visible spectroscopy and transmission electron microscopy. View Full-Text
Keywords: glycothermal method; photocatalytic; oxygen evolution; visible light irradiation glycothermal method; photocatalytic; oxygen evolution; visible light irradiation
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Chiang, T.H.; Chen, T.-M. Photocatalytic Water Splitting for O2 Production under Visible Light Irradiation Using NdVO4-V2O5 Hybrid Powders. Materials 2017, 10, 331.

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