期刊
APPLIED SURFACE SCIENCE
卷 259, 期 -, 页码 698-704出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2012.07.102
关键词
CdS; Halloysite nanotube; Hydrothermal method; Photocatalysis; Tetracycline
类别
资金
- Research Foundation of Jiangsu University, China [11JDG107]
- Natural Science Foundation of Jiangsu Province [SBK2011460]
- Specialized Research Fund for the Doctoral Program of Higher Education [20113227110019]
- China Postdoctoral Science Foundation [2011M500861, 2012M511219, 2011M500869]
- program for Postgraduate Research Innovation in University of Jiangsu University [CXLX12_0634]
A novel nanocatalyst CdS/halloysite nanotubes (HNTs) was synthesized by hydrothermal method with direct growth of CdS nanoparticles on the surface of HNTs. The as-prepared photocatalysts had been characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), UV-vis diffuse reflectance spectra (UV-vis DRS), Fourier transform infrared (FT-IR) and the thermo gravimetric analysis (TGA). The photocatalytic activity of the sample was evaluated by the degradation of tetracycline (TC) under visible light irradiation. Benefit from the excellent properties of CdS and HNTs, the photocatalyst exhibited good photocatalytic activity and stability. In order to find out the optimum synthesis condition to obtain the best photocatalytic activity, a series of experiments were performed with different CdS loading capacity, different sources of sulfide and different hydrothermal temperatures, etc. The best photodegradation rate could reach 93% in 60 min under visible light irradiation. Therefore, the combination of CdS nanoparticles with HNTs endowed this material with a potential use in environmental treatments in industries. (C) 2012 Elsevier B. V. All rights reserved.
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