Fabrication of CdTe QDs/BiOI-Promoted TiO2 Hollow Microspheres with Superior Photocatalytic Performance Under Simulated Sunlight

被引：11
|
作者：
Qu, Xiaofei [1 ]
Liu, Meihua [1 ]
Li, Longfei [1 ]
Wang, Chunqi [1 ]
Zeng, Cuihua [1 ]
Liu, Jianhuang [2 ]
Shi, Liang [1 ]
Du, Fanglin [1 ]
机构：
[1] Qingdao Univ Sci & Technol, Coll Mat Sci & Engn, Zhengzhou Rd 53, Qingdao 266042, Peoples R China
[2] Ansteel Cold Rolling PuTian Co Ltd, Wangshan East Rd 555, Putian 351100, Peoples R China
来源：
NANOSCALE RESEARCH LETTERS | 2019年 / 14卷 / 1期
关键词：
Photocatalysis; Ternary heterojunctions; CdTe quantum dots; TiO2 hollow microspheres; P-N-JUNCTION; NANOTUBE ARRAYS; FESE NANORODS; NANOPARTICLES; BIVO4; SENSITIZATION; DEGRADATION; SEPARATION; PHOTOANODE; NANOSHEETS;
D O I：
10.1186/s11671-019-2878-1
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Hollow and heterostructured architectures are recognized as an effective approach to improve photocatalytic performance. In this work, ternary TiO2/CdTe/BiOI with hollow structure was constructed via a step-by-step method. In addition, the effect of TiO2 structural regulation and the energy band alignment of BiOI and CdTe quantum dots (CdTe QDs) with TiO2 in TiO2/CdTe/BiOI on photocatalytic dye removal were also studied. The results reveal that the TiO2/CdTe/BiOI heterostructures with hollow substrates exhibit much higher photocatalytic activities than pure TiO2, P25, TiO2/CdTe, and TiO2/BiOI and ternary TiO2/CdTe/BiOI with solid substrates. For TiO2(H)/CdTe/BiOI, several synergistic factors may be responsible for the remarkable visible-light photodegradation performance, such as strong visible-light absorption by BiOI and larger specific surface area.
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页数：11
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