In situ loading of CuS nanoflowers on rutile TiO2 surface and their improved photocatalytic performance

被引：90
作者：
Lu, Y. Y. [1 ]
Zhang, Y. Y. [1 ]
Zhang, J. [1 ]
Shi, Y. [2 ]
Li, Z. [2 ]
Feng, Z. C. [3 ]
Li, C. [3 ]
机构：
[1] Liaoning Shihua Univ, Coll Chem Chem Engn & Environm Engn, Fushun 113001, Liaoning, Peoples R China
[2] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R China
[3] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2016年 / 370卷
基金：
中国国家自然科学基金;
关键词：
CuS; TiO2; Photocatalysis; Heterojunction; Methylene Blue; 4-Chlorophenol; LOW-TEMPERATURE SYNTHESIS; ENERGY APPLICATIONS; H-2; EVOLUTION; DEGRADATION; SULFIDE; TRANSFORMATION; NANOCOMPOSITE; NANOPARTICLE; COCATALYSTS; FILMS;
D O I：
10.1016/j.apsusc.2016.02.170
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：
CuS nanoflowers, fabricated by an element-direct-reaction route using copper and sulfur powder, were loaded on rutile TiO2 (CuS/TiO2) at low temperature. CuS/TiO2 composites were utilized as the photocatalysts for the degradation of Methylene Blue (MB) and 4-chlorophenol (4-CP). X-ray diffraction (XRD), UV Raman spectroscopy, transmission electron microscopy (TEM), XPS, and UV-visible diffuse reflectance spectra were used to characterize the crystalline phase, morphology, particle size, and the optical properties of CuS/TiO2 samples. It is found that CuS/TiO2 photocatalyst, which CuS are loaded on the surface of rutile TiO2, exhibited enhanced photocatalytic degradation of MB (or 4-CP) than TiO2 or CuS. This indicates that CuS can enhance effectively the photocatalytic activity of rutile TiO2 by forming heterojunction between CuS and rutile TiO2, which is confirmed by photoluminescence (PL) spectra and TEM. Moreover, CuS content has a significant influence on photocatalytic activity and 2 wt% CuS/TiO2 showed the maximum photocatalytic activity for degradation of MB. (C) 2016 Elsevier B.V. All rights reserved.
引用
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页码：312 / 319
页数：8
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