Journal
PROGRESS IN CRYSTAL GROWTH AND CHARACTERIZATION OF MATERIALS
Volume 58, Issue 2-3, Pages 145-163Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.pcrysgrow.2012.02.004
Keywords
Characterization; Metal oxides; Nano-sized; Photocatalysts; Visible light
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Nano-sized doped-metal oxides such as Fe-doped TiO2, WO3-doped ZnO and Fe-doped CeO2 were synthesized by the modified sol-gel/impregnation, flame spray pyrolysis and homogeneous precipitation/impregnation methods respectively. The crystalline phase, particles size, and crystallinity of nano-sized powder were analyzed by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Specific surface area of the sample was examined by the Brunauer, Emmett and Teller (BET) adsorption-desorption of nitrogen gas. The photocatalytic activity of Fe-doped TiO2, WO3/ZnO, Fe-doped CeO2 nanoparticles was examined by studying the mineralization of methanol, sucrose, glucose, oxalic acid and formic acid under UV and visible light irradiations in a pyrex spiral photoreactor. It was found that doped metal oxides could improve the photocatalytic activity of the pure metal oxides. (C) 2012 Elsevier Ltd. All rights reserved.
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