文献类型：期刊文献

英文题名：Synthesis, Characterization of Ce-doped TiO2 Nanotubes with High Visible Light Photocatalytic Activity

作者：Sun, Panpan[1];Liu, Lei[1];Cui, Shi-Cong[1];Liu, Jin-Gang[1]

机构：[1]E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China

年份：2014

卷号：144

期号：12

起止页码：2107

外文期刊名：CATALYSIS LETTERS

收录：;EI(收录号：20144200096951);WOS:【SCI-EXPANDED(收录号:WOS:000345843700014)】；

基金：This study was financially supported by NSF of China (#21271072) and the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning and was sponsored by the Shanghai Pujiang Program (# 13PJ1401900).

语种：英文

外文关键词：Titanium dioxide; Nanotubes; Cerium; Dopant; Photocatalysis

摘要：Metallic doping effectively extends the light response range of TiO2 photocatalysts from the ultraviolet (UV) to the visible region. We prepared Ce-doped TiO2 nanotubes (Ce-TiO2 NTs) using a sol-gel process followed by a hydrothermal treatment. The Ce-TiO2 NTs were characterized by X-ray diffraction, transmission electron microscopy, Brunauer-Emmett-Teller surface area, X-ray photoelectron spectroscopy, UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), and photoluminescence (PL) spectroscopy. Given that the optical absorption was extended to wavelengths of 600 nm, the Ce-TiO2 NTs demonstrated excellent photocatalytic activity for degrading methylene blue under visible light irradiation. Ce-TiO2 NTs with various amounts of Ce doping (0.06-0.40 g of cerium nitrate hexahydrate added during preparation) were tested, and the 0.12Ce-TiO2 NTs showed the highest photocatalytic activity, 7 times higher than that of P25. For their efficient photodegrading of dyes under visible light, these Ce-TiO2 NTs may be useful for waste water treatment.