Visible light photodegradation of rhodamine B over VDF/CTFE copolymer-templated crystalline mesoporous titania |
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| Authors: | Guoli Zi Yi Wang Kai Zheng Huan Zhao Fuzhi Wang Wenjun Zhang Zhiying Yan Jiao He Jiaqiang Wang |
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| Institution: | 1. Department of Applied Chemistry, The Universities’ Center for Photocatalytic Treatment of Pollutants in Yunnan Province, Yunnan University, Kunming, 650091, People’s Republic of China
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| Abstract: | Mesoporous TiO2 with anatase crystalline structure (MTiO2/F2319) has been synthesized by using vinylidene fluoride/chlorotrifluoroethylene copolymer (1:9 in mole, F2319) as template. The synthesized mesoporous titania samples were characterized by a combination of various physicochemical techniques, such as X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, and N2 adsorption/desorption. It was found that without any external doping, MTiO2/F2319 exhibited significantly higher photocatalytic activities for the degradation of rhodamine B (RhB) dye than P25 TiO2 under visible light irradiation. Furthermore, the UV-Vis absorption maximum of the dye solution exhibited a gradual hypsochromic shift due to de-ethylation and degradation of RhB dye. |
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