Effect of Ordered TiO2 Nanotube Array Substrate on Photocatalytic Performance of CdS-Sensitized ZnO Nanorod Arrays

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• 作者：Liangpeng Wu ; Juan Li ; Shaohong Zhang ; Lizhen Long ; Xinjun Li ; Chaoping Cen
• 刊名：Journal of Physical Chemistry C
• 出版年：2013
• 出版时间：November 7, 2013
• 年：2013
• 卷：117
• 期：44
• 页码：22591-22597
• 全文大小：423K
• 年卷期：v.117,no.44(November 7, 2013)
• ISSN：1932-7455

文摘

The composite photocatalyst with layered nanoarray structure, CdS-sensitized ZnO nanorod arrays (ZnONRA/CdS) grown on ordered TiO₂ nanotube arrays (TiO₂NTA), was constructed. The performance of composite photocatalyst toward to hydrogen production from water splitting was investigated. The ZnONRA/CdS composite photocatalyst with the substrate layer of ordered TiO₂NTA has the enhanced rate of hydrogen production and the improved photostability. It may be attributed to the one-dimensional structure of TiO₂NTA at the bottom of ZnONRA/CdS composite photocatalyst, which provides a direct transfer pathway of photoinjected electrons along the photoanode to enhance charge-collection efficiency and consequently reduce electron鈥揾ole recombination.