Enhancing the Photocatalytic Activity of Anatase TiO2 by Improving the Specific Facet-Induced Spontaneous Separation of Photogenerated Electrons and Holes

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	Enhancing the Photocatalytic Activity of Anatase TiO2 by Improving the Specific Facet-Induced Spontaneous Separation of Photogenerated Electrons and Holes
	Liu, Chang ; Han, Xiguang ; Xie, Shuifen ; Kuang, Qin ; Wang, Xue ; Jin, Mingshang ; Xie, Zhaoxiong ; Zheng, Lansun ; Zheng LS(郑兰荪)
刊名	http://dx.doi.org/10.1002/asia.201200886
	2013-01
关键词	hydrogen evolution nanostructures photocatalysis surface chemistry titanium
英文摘要	Recently, it has been proven that directional flow of photogenerated charge carriers occurs on specific facets of TiO2 nanocrystals. Herein, we demonstrate that the photocatalytic activity of anatase TiO2 nanocrystals in both photoreduction and photooxidation processes can be enhanced by selectively depositing Pt nanoparticles on the {101} facets, which strengthens spontaneously surface-induced separation between photogenerated electrons and holes in the photocatalysis process. An optimal ratio of the oxidative {001} facets to the reductive {101} facets exists with regard to the photocatalysis of the faceted TiO2 nanocrystals, and this is crucial for balancing the recombination and redox reaction rates of photogenerated electrons and holes. The present work might help us gain deeper insight into the relation between the specific surface of semiconductor photocatalysts and their photocatalytic activities and provides us with a new route to design photocatalysts with high photocatalytic activity.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/63919]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Liu, Chang,Han, Xiguang,Xie, Shuifen,et al. Enhancing the Photocatalytic Activity of Anatase TiO2 by Improving the Specific Facet-Induced Spontaneous Separation of Photogenerated Electrons and Holes[J]. http://dx.doi.org/10.1002/asia.201200886,2013.
APA	Liu, Chang.,Han, Xiguang.,Xie, Shuifen.,Kuang, Qin.,Wang, Xue.,...&郑兰荪.(2013).Enhancing the Photocatalytic Activity of Anatase TiO2 by Improving the Specific Facet-Induced Spontaneous Separation of Photogenerated Electrons and Holes.http://dx.doi.org/10.1002/asia.201200886.
MLA	Liu, Chang,et al."Enhancing the Photocatalytic Activity of Anatase TiO2 by Improving the Specific Facet-Induced Spontaneous Separation of Photogenerated Electrons and Holes".http://dx.doi.org/10.1002/asia.201200886 (2013).