| 构建TiO2柱状多层石墨烯纳米复合材料作为降解环丙沙星的高效光催化剂 |
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| 作者姓名： | Xiong-feng Zeng Jian-sheng Wang Ying-na Zhao Wen-li Zhang Meng-huan Wang |
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| 作者单位： | Hebei Provincial Laboratory of Inorganic Nonmetallic Materials, College of Materials Science and Engineering, North China University of Science and Technology, Tangshan 063210, China |
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| 基金项目： | China ;and the Hebei Natural Science Funds for the Joint Research of Iron and Steel;This work was financially supported by the Youth Fund of Hebei Province Education Department |
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| 摘 要： | We successfully constructed TiO2-pillared multilayer graphene nanocomposites (T-MLGs) via a facile method as follows: dodecanediamine pre-pillaring, ion exchange (Ti4+ pillaring), and interlayer in-situ formation of TiO2 by hydrothermal method. TiO2 nanoparticles were distributed uniformly on the graphene interlayer. The special structure combined the advantages of graphene and TiO2 nanoparticles. As a result, T-MLGs with 64.3wt% TiO2 showed the optimum photodegradation rate and adsorption capabilities toward ciprofloxacin. The photodegradation rate of T-MLGs with 64.3wt% TiO2 was 78% under light-emitting diode light irradiation for 150 min. Meanwhile, the pseudo-first-order rate constant of T-MLGs with 64.3wt% TiO2 was 3.89 times than that of pristine TiO2. The composites also exhibited high stability and reusability after five consecutive photocatalytic tests. This work provides a facile method to synthesize semiconductor-pillared graphene nanocomposites by replacing TiO2 nanoparticles with other nanoparticles and a feasible means for sustainable utilization of photocatalysts in wastewater control.
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| 关 键 词： | ,,,,, |
Construction of TiO2-pillared multilayer graphene nanocomposites as efficient photocatalysts for ciprofloxacin degradation |
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| Xiong-feng Zeng,Jian-sheng Wang,Ying-na Zhao,Wen-li Zhang,Meng-huan Wang.Construction of TiO2-pillared multilayer graphene nanocomposites as efficient photocatalysts for ciprofloxacin degradation[J].International Journal of Minerals,Metallurgy and Materials,2021,28(3):503-510. |
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| Authors: | Xiong-feng Zeng Jian-sheng Wang Ying-na Zhao Wen-li Zhang Meng-huan Wang |
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| Abstract: | We successfully constructed TiO2-pillared multilayer graphene nanocomposites (T-MLGs) via a facile method as follows: dodeca-nediamine pre-pillaring, ion exchange (Ti4+ pillaring), and interlayer in-situ formation of TiO2 by hydrothermal method. TiO2 nanoparticles were distributed uniformly on the graphene interlayer. The special structure combined the advantages of graphene and TiO2 nanoparticles. As a result, T-MLGs with 64.3wt％ TiO2 showed the optimum photodegradation rate and adsorption capabilities toward ciprofloxacin. The photo-degradation rate of T-MLGs with 64.3wt％ TiO2 was 78％ under light-emitting diode light irradiation for 150 min. Meanwhile, the pseudo-first-order rate constant of T-MLGs with 64.3wt％ TiO2 was 3.89 times than that of pristine TiO2. The composites also exhibited high stability and reusability after five consecutive photocatalytic tests. This work provides a facile method to synthesize semiconductor-pillared graphene nanocomposites by replacing TiO2 nanoparticles with other nanoparticles and a feasible means for sustainable utilization of photocatalysts in wastewater control. |
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| Keywords: | pillared structure titanium dioxide-pillared multilayer graphene nanocomposites photocatalysis ciprofloxacin |
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