Enhanced photocatalytic hydrogen evolution activity of CuInS2 loaded TiO2 under solar light irradiation

被引：42
作者：
Li, Changjiang [3 ]
Xi, Zhenhao [1 ,2 ]
Fang, Wenzhang [1 ,2 ]
Xing, Mingyang [1 ,2 ]
Zhang, Jinlong [1 ,2 ,4 ]
机构：
[1] E China Univ Sci & Technol, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China
[2] E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China
[3] Huangshan Univ, Dept Chem, Huangshan 245041, Peoples R China
[4] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 2015年 / 226卷
基金：
中国国家自然科学基金;
关键词：
CuInS2; CuInS2/TiO2; Water splitting; Photocatalytic hydrogen evolution; H-2; EVOLUTION; PHOTOSTABILITY; NANOCRYSTALS;
D O I：
10.1016/j.jssc.2015.02.011
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
In this paper, p-n type CuInS2/TiO2 particles were prepared in ethylenediamine by the solvothermal method. The microstructural properties of the synthesized p-n type catalysts were characterized by Xray diffraction (XRD) in order to confirm the existence of crystalline CuInS2 on the surface of TiO2, which was also confirmed by X-ray photoelectron spectroscopy (XPS). Transmission electron microscopy (TEM) images provided the detailed morphological properties about the CuInS2/TiO2 heterostructure. UV-vis diffuse reflectance spectroscopy (UV-vis DRS) was used to investigate the optical properties of the CuInS2/TiO2 particles. The DRS results indicated that both the p-n type structure and CuInS2 acting as a sensitizer can enhance significantly the absorption of UV and visible light. The photocatalytic activities of the CuInS2/TiO2 particles were evaluated by hydrogen evolution reactions using Xe-lamp irradiation as a simulated solar light source. The greatly enhanced photocatalytic activity of hydrogen evolution under simulated solar light is about similar to 7 fold higher than that of pure commercial TiO2 (Degussa P25). (C) 2015 Elsevier Inc. All rights reserved.
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页码：94 / 100
页数：7
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