TiO{sub 2} nanoparticles incorporated with CuInS{sub 2} clusters: preparation and photocatalytic activity for degradation of 4-nitrophenol

Journal Article · Sat Nov 14 23:00:00 EST 2009 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.08.014· OSTI ID:21372374

Yikai, Yang ^[1]; Wenbo, Bu ^[2]; Jin, Mu ^[1]

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1. Department of Chemistry, East China University of Science and Technology, P.O. Box 427, 130 Meilong Road, Shanghai 200237 (China)
2. 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, Journal Name: Journal of Solid State Chemistry Journal Issue: 11 Vol. 182; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

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