TiO{sub 2} nanoparticles incorporated with CuInS{sub 2} clusters: preparation and photocatalytic activity for degradation of 4-nitrophenol
- Department of Chemistry, East China University of Science and Technology, P.O. Box 427, 130 Meilong Road, Shanghai 200237 (China)
- State Key Lab of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding-xi Road, Shanghai 200050 (China)
TiO{sub 2} nanoparticles incorporated with CuInS{sub 2} clusters were prepared in a solvothermal process and characterized with X-ray diffraction (XRD), transmission electron microscopy (TEM), and energy-dispersion X-ray analysis (EDX). Compared with pure TiO{sub 2} nanoparticles, the TiO{sub 2} nanoparticles incorporated with CuInS{sub 2} clusters display higher photocatalytic activity with 99.9% of degradation ratio of 4-nitrophenol after 2 h irradiation. In order to investigate the effect of the CuInS{sub 2} clusters on the photocatalytic activity of TiO{sub 2} nanoparticles, diffuse reflectance UV-Vis spectra (DRS), photoluminescence (PL) spectra, and photocurrent action spectra were measured. The results indicate that the enhanced photocatalytic activity is probably due to the interface between TiO{sub 2} and CuInS{sub 2} as a trap of the photogenerated electrons to decrease the recombination of electrons and holes. - Graphical abstract: Kinetic curves of 4-nitrophenol (1.44x10{sup -4} mol L{sup -1}) degradation under UV irradiation.
- OSTI ID:
- 21372374
- Journal Information:
- Journal of Solid State Chemistry, Vol. 182, Issue 11; Other Information: DOI: 10.1016/j.jssc.2009.08.014; PII: S0022-4596(09)00398-3; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COPPER SULFIDES
INDIUM SULFIDES
NANOSTRUCTURES
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PHOTOLUMINESCENCE
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TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
AROMATICS
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OXYGEN COMPOUNDS
PHENOLS
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