Simultaneous hydrogen production and decomposition of H2S dissolved in alkaline water over CdS-TiO2 composite photocatalysts under visible light irradiation

被引：109

作者：

Jang, Jum Suk ^{[1
]}

Kim, Hyun Gyu ^{[2
]}

Borse, Pramod H. ^{[1
]}

Lee, Jae Sung ^{[1
]}

机构：

[1] POSTECH, Sch Environm Sci & Engn, Dept Chem Engn, Ecofriendly Catalysis & Energy Lab NRL, Pohang 790784, South Korea

[2] KBSI, Busan Ctr, Pusan 609735, South Korea

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2007年 / 32卷 / 18期

关键词：

photocatalyst; CdS-TiO2; visible light; hydrogen sulfide; hydrogen production; isotope experiment;

D O I：

10.1016/j.ijhydene.2007.06.026

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A process of simultaneous hydrogen production and H2S removal has been investigated over a highly active composite photocatalyst made of bulk CdS decorated with nanoparticles of TiO2, i.e. CdS(bulk)/TiO2. The photocatalytic activity was evaluated for hydrogen production from aqueous electrolyte solution containing H2S dissolved in water or alkaline solution under visible light irradiation. The rate of hydrogen production from the H2S-containing alkaline solution was similar to the rate obtained from photocatalytic hydrogen production from water containing sacrificial reagents (Na2S + Na2SO3) in the similar concentration. The isotope experiment was carried out with D2O instead of H2O to investigate the source of hydrogen from photocatalytic decomposition of H2S dissolved in H2O or alkali solution under visible light. Hydrogen originated from both H2S and H2O when the reaction solution contained H2S absorbed in alkaline water. (c) 2007 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

引用

页码：4786 / 4791

页数：6

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