Facile synthesis of CdS@TiO2 core-shell nanorods with controllable shell thickness and enhanced photocatalytic activity under visible light irradiation

被引：94
|
作者：
Dong, Wenhao [1 ,2 ]
Pan, Feng [1 ,2 ]
Xu, Leilei [1 ,2 ]
Zheng, Minrui [3 ]
Sow, Chorng Haur [3 ]
Wu, Kai [2 ,4 ]
Xu, Guo Qin [1 ,2 ]
Chen, Wei [1 ,2 ,3 ,5 ]
机构：
[1] Natl Univ Singapore, Dept Chem, 3 Sci Dr 3, Singapore 117543, Singapore
[2] Peking Univ, Ctr Res Excellence & Technol Enterprise CREATE, Res Ctr, Singapore 138602, Singapore
[3] Natl Univ Singapore, Dept Phys, Singapore 117551, Singapore
[4] Peking Univ, Coll Chem & Mol Engn, BNLMS, SKLSCUSS, Beijing 100871, Peoples R China
[5] Natl Univ Singapore Suzhou, Res Inst, Suzhou 215123, Jiangsu, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2015年 / 349卷
基金：
新加坡国家研究基金会;
关键词：
CdS@TiO2; Core shell nanocomposite; Controllable shell thickness; Visible-light photocatalyst; CDS QUANTUM DOTS; HYDROGEN-PRODUCTION; TITANIUM-DIOXIDE; TIO2; PHOTOCATALYSIS; RECENT PROGRESS; HIGH-PURITY; SEMICONDUCTOR; WATER; PHENOL; COMPOSITE;
D O I：
10.1016/j.apsusc.2015.04.207
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：
Amorphous TiO2 layers with a controllable thickness from 3.5 to 40 nm were coated on the one-dimensional CdS nanorods surface under mild conditions. Compared to the bare CdS nanorods, the as-prepared CdS@TiO2 nanorods exhibit enhanced photocatalytic activities for phenol photodecomposition under visible light irradiation. The improved photoactivity is ascribed to the efficient separation of photogenerated electron and hole charge carriers between CdS cores and TiO2 shells. This study promises a simple approach to fabricating CdS@TiO2 core-shell structure nanocomposites, and can be applied for other semiconductor cores with TiO2 shells. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：279 / 286
页数：8
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