文献类型：期刊文献

英文题名：Self-doped Ti3+-enhanced TiO2 nanoparticles with a high-performance photocatalysis

作者：Xing, Mingyang[1,2];Fang, Wenzhang[1,2];Nasir, Muhammad[3];Ma, Yunfei[1,2];Zhang, Jinlong[1,2];Anpo, Masakazu[3]

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, 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, Naka Ku, Sakai, Osaka 5998531, Japan

年份：2013

卷号：297

起止页码：236

外文期刊名：JOURNAL OF CATALYSIS

收录：;EI(收录号：20125115810772);WOS:【SCI-EXPANDED(收录号:WOS:000314136500025)】；

基金：This work has been supported by the National Nature Science Foundation of China (21237003, 20977030, and 21173077), the National Basic Research Program of China (2010CB732306), the Project of International Cooperation of the Ministry of Science and Technology of China (2011DFA50530); the Science and Technology Commission of Shanghai Municipality (10JC1403900 and 12XD1402200), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Ti3+ self-doped; Titanium oxide; Photocatalyst; NaBH4; HCI washing; NaBO2; Carbonaceous impurities; Photocatalytic activity

摘要：A series of TiO2 catalysts self-doped with Ti3+ were successfully synthesized by a simple one-step solvo-thermal method with low-cost NaBH4 added as a reductant. During NaBH4 reduction, large amounts of NaBO2 and carbonaceous impurities covered the surface of the TiO2 self-doped with Ti3+, resulting in an inhibition of visible-light absorption and photocatalytic activity. In the preparation, HCl solution was used to wash off the by-product NaBO2 and carbonaceous impurities coated on the surface of the catalysts. The samples were characterized by XRD, UV-DRS, ESR, XPS, and FT-IR analyses. After HCl washing, the photocatalytic activity of the Ti3+-doped TiO2 increased markedly, while the Ti3+ content remained the same. Furthermore, it was found that the visible-light photocatalytic activity of Ti3+-doped TiO2 depended on the amount of Ti3+ added, while there was no significant impact of Ti3+ doping on its UV-light photocatalytic activity. (c) 2012 Elsevier Inc. All rights reserved.