Journal
MATERIALS RESEARCH BULLETIN
Volume 46, Issue 11, Pages 1766-1771Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2011.08.006
Keywords
Semiconductors; Sol-gel chemistry; Photoelectron spectroscopy; Thermogravimetric analysis (TGA); X-ray diffraction; Catalytic properties
Categories
Funding
- CSIR, New Delhi
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Bi-doped TiO2 catalyst was prepared by sol-gel method and was characterized by thermo gravimetric analysis (TGA), X-ray diffraction spectra (XRD), X-ray photo electronic spectroscopy (XPS). UV-Vis diffused reflectance spectra (DRS), photoluminescence spectra (PLS), transmission electron microscopy (TEM), energy dispersive analysis of X-rays (EDAX) and BET surface area. The photocatalytic activity of the catalysts were evaluated for the degradation of isoproturon herbicide under solar light irradiation. The UV-Visible DRS of Bi-doped TiO2 showed red shift in optical absorption. The presence of Bi3+delta+ species are playing a vital role in minimizing the electron hole recombination resulting higher activity compared to bare TiO2. (C) 2011 Elsevier Ltd. All rights reserved.
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