Visible light-induced hydrogen over CuFeO2 viaS2O2-3 oxidation

被引：51

作者：

Younsi, M ^{[1
]}

Aider, A ^{[1
]}

Bouguelia, A ^{[1
]}

Trari, M ^{[1
]}

机构：

[1] Fac Chim, Lab Stockage & Valorisat Energies Renourelables E, Algiers, Algeria

来源：

SOLAR ENERGY | 2005年 / 78卷 / 05期

关键词：

catalyst; hydrogen; thiosulfate; CuFeO2;

D O I：

10.1016/j.solener.2004.01.012

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The properties of CuFeO2 have been studied according to the catalytic hydrogen production upon visible light. CuFeO2 with a low band gap F, a good chemical stability and a suitable flat band potential appears as a suitable,candidate. The potential of photoelectrons allows favorably a thermodynamically H-2-evolution from alkaline thiosulfate S2O32- solution. There is a major difference between pure and loaded oxide with some metal catalysts. Our best results have been obtained with unloaded CuFeO2 at 50 degrees C and pH 13,60. Thiosulfate S2O32- ions can be oxidized to sulfite SO32- and subsequently to sulfate SO42- and the electronic exchange occurs via mediation of surface states. The quite high H-2-formation at the beginning shows a tendency towards saturation, it competes with SO32-, produced by parallel oxidation of S2O32- (c) 2004 Published by Elsevier Ltd.

引用

页码：574 / 580

页数：7

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