文献类型：期刊文献

英文题名：Fe³⁺-TiO₂ photocatalysts prepared by combining sol-gel method with hydrothermal treatment and their characterization

作者：Zhu, Jiefang; Chen, Feng; Zhang, Jinlong; Chen, Haijun; Anpo, Masakazu

机构：[1]E China Univ Sci & Technol, Adv Mat Lab, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China;[3]Osaka Prefecture Univ, Grad Sch Engn, Dept Appl Chem, Sakai, Osaka 5998531, Japan

年份：2006

卷号：180

期号：1-2

起止页码：196

外文期刊名：JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000237486700027)】；

语种：英文

外文关键词：titanium dioxide; photocatalyst; sol-gel method; hydrothermal treatments; doping; Fe3+

摘要：Fe3+-doped anatase nanosized TiO2 photocatalysts have been prepared by combining sol-gel method with hydrothermal treatment. The samples were characterized by UV-vis diffuse reflectance spectroscopy, X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET)-specific surface area (S-BET), transmission electron microscopy (TEM). atomic absorption flame emission spectroscopy (AAS), electron paramagnetic resonance (EPR) spectroscopy and X-ray photoelectron spectroscopy (XPS). From results of UV-vis diffuse reflectance spectroscopy. Fe3+-doped TiO2 extends its absorption to longer than 500 nm, which leads to an obvious photocatalatic activity under visible irradiation. From XRD, EPR, AAS and XPS, it was found that Fe exist in trivalent ionic state substituting Ti4+ in TiO2 lattice and its concentration decreases from the surface to the center of doped TiO2. The photocatalytic activity of prepared samples was investigated for the photocatalytic degradation of active yellow XRG dye. The photocatalytic activity of TiO2 doped with appropriate content of Fe3+ exceeded those of non-doped TiO2 and P25 both under UV and visible light irradiation. (c) 2005 Elsevier B.V. All rights reserved.