A CdS-modified TiO2 nanocrystalline photoanode for efficient hydrogen generation by visible light

被引：77
|
作者：
Chi, Ching-Fa [1 ]
Lee, Yuh-Lang [1 ]
Weng, Huang-Shan [1 ]
机构：
[1] Natl Cheng Kung Univ, Dept Chem Engn, Tainan 70101, Taiwan
来源：
NANOTECHNOLOGY | 2008年 / 19卷 / 12期
关键词：
D O I：
10.1088/0957-4484/19/12/125704
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Cadmium sulfide (CdS) was in situ synthesized onto mesoporous TiO2 films and used as a sensitizer to fabricate a photoelectrode for hydrogen generation in visible light. The incorporation of CdS extends the optical absorption threshold of a TiO2 electrode to visible light, enhancing the visible-light-induced photocurrent. A maximum photoconversion efficiency of 3.67% was achieved for this CdS-sensitized TiO2 electrode under visible light illumination of 100 mW cm(-2). The hydrogen generation rate obtained at conditions of maximum efficiency is 95.5 mu mol cm(-2) h(-1). To the best of our knowledge, the hydrogen generation rate is the highest among those reported for a photoelectrochemical cell under the illumination of visible light.
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页数：5
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