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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Investigation of photocatalytic activity of metal-doped TiO2 nanoparticles prepared by Pechini method

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Author(s):
Rosario, Adriane V. [1] ; Christinelli, Wania A. [1] ; Barreto, Roberta N. [1] ; Pereira, Ernesto C. [1]
Total Authors: 4
Affiliation:
[1] Univ Fed Sao Carlos, Ctr Multidisciplinar Desenvolvimento Mat Ceram, Dept Quim, Lab Interdisciplinar Eletroquim & Ceram, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Journal of Sol-Gel Science and Technology; v. 64, n. 3, p. 734-742, DEC 2012.
Web of Science Citations: 9
Abstract

M-doped TiO2 (M = Ag2+, Al3+, Ce4+, Nb5+) with different dopant contents have been prepared by the Pechini method using titanium IV isopropoxide as precursor. The effect of doping concentration on the photocatalytic activity for methyl orange (MO) photodegradation was investigated using UV radiation. The photocatalysts were characterized by surface area, X-ray diffraction and UV-Vis diffuse reflectance spectroscopy. An increase in the photoactivity of TiO2 nanoparticles was confirmed by MO photocatalytic degradation experiments, when the transition metal ions were incorporated into the semiconductor crystalline lattice, which could be attributed to an increase in the charge separation and reduction of e(-)/h(+) recombination as a function of the substitutional defect generated at very low levels. (AU)