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TiO2/Cu2O Core/Ultrathin Shell Nanorods as Efficient and Stable Photocatalysts for Water Reduction
Liu, Yuanxu; Zhang, Bingsen; Luo, Liangfeng; Chen, Xuanye; Wang, Zhonglei; Wu, Erlong; Su, Dangsheng; Huang, Weixin; huangwx@ustc.edu.cn
2015
发表期刊ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
ISSN1433-7851
卷号54期号:50页码:15260-15265
摘要P-type Cu2O has been long considered as an attractive photocatalyst for photocatalytic water reduction, but few successful examples has been reported. Here, we report the synthesis of TiO2 (core)/Cu2O (ultrathin film shell) nanorods by a redox reaction between Cu2+ and in-situ generated Ti3+ when Cu2+-exchanged H-titanate nanotubes are calcined in air. Owing to the strong TiO2-Cu2O interfacial interaction, TiO2 (core)/Cu2O (ultrathin film shell) nanorods are highly active and stable in photocatalytic water reduction. The TiO2 core and Cu2O ultrathin film shell respectively act as the photosensitizer and cocatalyst, and both the photoexcited electrons in the conduction band and the holes in the valence band of TiO2 respectively transfer to the conduction band and valence band of the Cu2O ultrathin film shell. Our results unambiguously show that Cu2O itself can act as the highly active and stable cocatalyst for photocatalytic water reduction.
部门归属[liu, yuanxu ; luo, liangfeng ; wang, zhonglei ; wu, erlong ; huang, weixin] univ sci & technol china, hefei natl lab phys sci microscale, cas key lab mat energy convers, dept chem phys, hefei 230026, peoples r china ; [zhang, bingsen ; su, dangsheng] chinese acad sci, catalysis & mat div, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china ; [chen, xuanye] hefei univ technol, sch chem & chem engn, hefei 230009, peoples r china
关键词Core-shell Structures Cu2o Thin Films Interfaces Photocatalysis Redox Reaction
资助者National Basic Research Program of China [2013CB933104]; National Natural Science Foundation of China [21525313, 21173204, U1332113]; Chinese Academy of Sciences [KJZD-EW-M03]; MOE Fundamental Research Funds for the Central Universities [WK2060030017, WK2060030022]; Collaborative Innovation Center of Suzhou Nano Science and Technology
收录类别sci
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/75217
专题中国科学院金属研究所
通讯作者huangwx@ustc.edu.cn
推荐引用方式
GB/T 7714
Liu, Yuanxu,Zhang, Bingsen,Luo, Liangfeng,et al. TiO2/Cu2O Core/Ultrathin Shell Nanorods as Efficient and Stable Photocatalysts for Water Reduction[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2015,54(50):15260-15265.
APA Liu, Yuanxu.,Zhang, Bingsen.,Luo, Liangfeng.,Chen, Xuanye.,Wang, Zhonglei.,...&huangwx@ustc.edu.cn.(2015).TiO2/Cu2O Core/Ultrathin Shell Nanorods as Efficient and Stable Photocatalysts for Water Reduction.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,54(50),15260-15265.
MLA Liu, Yuanxu,et al."TiO2/Cu2O Core/Ultrathin Shell Nanorods as Efficient and Stable Photocatalysts for Water Reduction".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 54.50(2015):15260-15265.
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