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Title: Enhancement of photocatalytic activity of P25 TiO2 by vanadium-ion implantation under visible light irradiation
Authors: Zhou, J.
Takeuchi, M.
Ray, A.K.
Anpo, M.
Zhao, X.S. 
Keywords: Photocatalytic activity
Vanadium-ion implantation
Visible light irradiation
Issue Date: 15-Jul-2007
Citation: Zhou, J., Takeuchi, M., Ray, A.K., Anpo, M., Zhao, X.S. (2007-07-15). Enhancement of photocatalytic activity of P25 TiO2 by vanadium-ion implantation under visible light irradiation. Journal of Colloid and Interface Science 311 (2) : 497-501. ScholarBank@NUS Repository.
Abstract: An ion-implantation method was used to prepare V-ion-implanted P25 TiO2 photocatalysts. Their photocatalytic activity for the degradation of formic acid under visible light irradiation (λ > 450  nm) was investigated. Upon implantation of V ions into the lattice of P25 TiO2, the photoactivity was remarkably enhanced. HRTEM images showed that the implanted V ions existed in the form of VO2(T) in the lattice of P25 TiO2. The intensity of photoluminescence (PL) spectra of V-ion-implanted P25 TiO2 decreased with the increase of the amount of implanted V ions, indicating the decrease of electron-hole pair recombination. It was also observed that the lower the PL intensity of V-ion-implanted P25 TiO2, the higher the photoactivity. © 2007 Elsevier Inc. All rights reserved.
Source Title: Journal of Colloid and Interface Science
ISSN: 00219797
DOI: 10.1016/j.jcis.2007.03.007
Appears in Collections:Staff Publications

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