Synergistic effect of N- and F-codoping on the structure and photocatalytic performance of TiO_2

查看全文 作　　者：Jiemei [1,2]Yu;Zongming [2]Liu;Haitao [2]Zhang;Taizhong [2]Huang;Jitian [1]Han;Yihe [2,3]Zhang;Daohuang [2]Chong

机构地区：[1]School of Energy and Power Engineering, Shandong University;[2]School of Chemistry and Chemical Engineering, University of Jinan;[3]School of Materials Science and Technology, China University of Geosciences

出　　处：《Journal of Environmental Sciences》索引2015年第27卷第2期,共9页

基　　金：financially supported by the Natural Science Foundation of China (No. 51376110);the Natural Science Foundation of Shandong Province (No. ZR2012BQ027);the Program for Youth Science and Technology Star Fund of Jinan (No. 20120123);the Excellent Young Scientist Foundation of Shandong Province (No. BS2011CL005);the Science Development Project of Shandong Provincial (No. 2014GGX104004) 摘　　要：Three types of Ti O2 nanostructures were synthesized via a facile hydrolysis method at195 °C. Effects of the preparation method and doping with N and F on the crystal structure and photocatalytic performance of Ti O2 were investigated. The nanomaterials were characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, Brunauer–Emmett–Teller porosimetry, ultraviolet–visible diffuse reflectance spectroscopy and fluorescent emission spectra. Their photo-catalytic activity was examined by the photodegradation of methylene blue in aqueous solution under both ultra-violet and visible light irradiation. The results show that nitrogen and fluorine co-doped anatase Ti O2 had the characteristics of a smaller crystalline size, broader light absorption spectrum and lower charge recombination than pure Ti O2. Most importantly, more efficient photocatalytic activity under both ultra-violet and visible light was observed. The obtained N–F-Ti O2 nanomaterial shows considerable potential for water treatment under sunlight irradiation. 关键词：光催化性能 TiO2 纳米结构共掺杂协同效应 X射线光电子能谱可见光照射透射电子显微镜

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Synergistic effect of N- and F-codoping on the structure and photocatalytic performance of TiO_2

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