Efficient visible-light-induced photocatalytic activity over the novel Ti-doped BiOBr microspheres

• Published in: Powder technology 2012-09, Vol.228, p.258-263
• Main Authors: Wang, Rijing, Jiang, Guohua, Wang, Xiaohong, Hu, Ruanbing, Xi, Xiaoguang, Bao, Shiyong, Zhou, Yang, Tong, Tian, Wang, Sheng, Wang, Tao, Chen, Wenxing
• Format: Article
• Language: English
• Subjects: Adsorption; Applied sciences; Catalysis; Catalytic reactions; Chemical engineering; Chemistry; Doping; Double self-assemble method; electrons; Exact sciences and technology; Flower-like structure; General and physical chemistry; Iron; Microspheres; Miscellaneous; Photocatalysis; photocatalyst; Powder technology; Reactors; Solid-solid systems; Spectra; surface area; Surface chemistry; synergism; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Ti-doped BiOBr microspheres; Titanium; Visible-light-induced photocatalyst; X-ray diffraction
• ISSN: 0032-5910; 1873-328X
• DOI: 10.1016/j.powtec.2012.05.028

A novel and efficient visible-light-induced Ti-doped BiOBr photocatalyst was successfully obtained by double self-assemble method. The resultant samples were characterized by XRD, FE-SEM, HR-TEM, EDS, and UV–vis adsorption spectra. The possible formation process of the as-prepared samples and titanium doping in the lattice of BiOBr were investigated in this paper. The Ti-doped BiOBr microspheres exhibited higher visible-light-induced photocatalytic activity for the degradation of rhodamine B (RhB) than BiOBr due to the synergetic effect of the unique structure and the titanium doping as well as larger specific surface area, which effectively improved photogenerated electrons and holes transferring. The novel and efficient visible-light-induced Ti-doped BiOBr microspheres were successfully obtained by double self-assemble method. And the Ti0.22BiO1.48Br photocatalyst exhibited higher visible-light-induced photocatalytic activity for the degradation of rhodamine B (RhB) than BiOBr due to the synergetic effect of the unique structure and the titanium doping as well as larger specific surface area. [Display omitted] ► A novel Ti-doped BiOBr photocatalyst was obtained by double self-assemble method. ► The possible formation process of the Ti0.22BiO1.48Br samples was investigated. ► The Ti0.22BiO1.48Br samples exhibited higher photocatalytic activity than BiOBr.