Abstract
A novel composite material PIL@TiO2 was synthesized by sol–gel method using zwitterionic ionic liquid (1-(3-sulfonic group) propyl-3-ethylimidazole). TiO2 was uniformly loaded on PIL (poly(1-(3-sulfonic group) propyl-3-ethylimidazole)). The large specific surface area, unique microspore structure, negative effect, and synergistic effect were caused by PIL. PIL@TiO2 can effectively improve the separation efficiency of the electron–hole photogeneration. The electron–hole pair and ·OH play an important role in the photo-degradation. The structure of dye molecule is also an influencing factor for the degradation capacity. After five cycle experiments, PIL@TiO2 still exhibited excellent photocatalytic efficiency to dye molecules and its photocatalytic efficiency is better than that of P-25 (nanoscale TiO2) in the methyl orange and Rhodamine B solutions.
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Acknowledgements
This work was supported by the Applied Basic Research Programs of Science and Technology Department of Sichuan Province, China (2015JY0042), the Key Fund Project of Education Department of Sichuan Province, China (15ZA0147), and the Fundamental Research Funds of China West Normal University, China (14E015).
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Zhang, L., Du, J., Ran, T. et al. Preparation and application of poly(zwitterionic ionic liquid) to enhance the photocatalytic activity of TiO2 . J Mater Sci 51, 7186–7198 (2016). https://doi.org/10.1007/s10853-016-9999-z
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DOI: https://doi.org/10.1007/s10853-016-9999-z