文献类型：期刊文献

英文题名：Bi and Al co-doped anatase titania for photosensitized degradation of Rhodamine B under visible-light irradiation

作者：Wei, Shunhang[1];Gao, Jian[1];Wu, Pingru[1];Yao, Bo[1];Xu, Haitao[1];Tan, Yongsheng[1];Liu, Shiyan[1];Wu, Rong[2];Wang, Yawei[3];Wang, Lei[4];Fang, Zebo[1];Liang, Qifeng[1]

机构：[1]Shaoxing Univ, Dept Phys, Shaoxing 312000, Peoples R China;[2]Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830000, Peoples R China;[3]Jiujiang Univ, Jiangxi Prov Engn Res Ctr Ecol Chem Ind, Sch Chem & Chem Engn, Jiujiang 332005, Peoples R China;[4]Foshan Univ, Sch Mechatron Engn & Automat, Foshan 528225, Peoples R China

年份：2021

卷号：47

期号：20

起止页码：28296

外文期刊名：CERAMICS INTERNATIONAL

收录：SCI-EXPANDED(收录号：WOS:000693321400003)、、EI(收录号：20213010688261)、Scopus(收录号：2-s2.0-85111121739)、WOS

基金：This work was supported by National Natural Science Foundation of China (Grant Nos. 51872186, 11905133, 22066024, 52062023, 11574215), Zhejiang Province Public Welfare Technology Application Research Project (Grant No. LGG21F050001), Natural Science Foundation of Zhejiang province (Grant No. LQ19F040002), Guangdong Basic and Applied Basic Research Foundation (Grant No. 2020A1515110999) and Scientific Research Project of Shaoxing University (Grant No. 2020LG1011).

语种：英文

外文关键词：Bi/Al co-doping; Anatase; Electrostatic interaction; Photosensitized degradation; Visible light

外文摘要：Although TiO2 is a wide band gap semiconductor, it demonstrates photodegradation activity under visible light irradiation after dye sensitization. Compared with esterification between the surface hydroxyl group of TiO2 and the carboxylic group of dyes, electrostatic interaction between TiO2 and dye shows better photosensitized performance. In this work, Bi/Al co-doping anatase titania (Ti1-xBi2x/3Al2x/3O2 (0 <= x <= 0.3)) is designed to enhance the electrostatic interaction. The effect of Al ions is to enhance the solubility of Bi3+ into titania nanocrystals. A new band gap is generated after high concentration of Bi element doping, which not only promotes the absorption of visible light, but also improves the utilization of photogenerated carriers. Based on the results of transmission electron microscopy, light absorption, photodegradation activity and density functional theory calculations, it is found that bismuth dopant is the electron capture site. It first accumulates electrons through photocatalytic degradation reaction to enhance electrostatic adsorption between the catalyst and the positively charged dye molecules, and finally realizes high-efficiency photosensitization degradation of Rhodamine B. In addition, the sensitized titania has excellent photodegradation recyclability.