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Preparation of C/TiO2 photocatalytic self-cleaning membrane and its degradation of rhodamine B

Authors： CUI Yingkai, LI Xiangcun, JIANG Xiaobin, WU Xuemei, HE Gaohong, XIAO Wu

Units： State Key Laboratory of Fine Chemicals, R & D Center of Membrane Science and Technology, Dalian University of Technology, Dalian 116024, China

KeyWords： Patterned porous; C/TiO2; photocatalysis; self-cleaning; modified membrane

ClassificationCode：：TQ034

year,volume(issue):pagination： 2022,42(4):33-42

Abstract：

A C/TiO2 catalyst with patterned porous structure was prepared by the ultraviolet self-polymerization-burning method with pyrrole as the carbon source. Which effectively improved the light response ability and light utilization efficiency of the TiO2 catalyst under visible light conditions, so as to improve the degradation rate of Rhodamine B dye in wastewater. After comparison of experiment data, it is concluded that the degradation rate of Rhodamine B by C/TiO2-0.4 can reach 91.80% within 90 min. At the same time, C/TiO2-0.4 was mixed into the PVDF membrane solution, and the modified membrane was prepared by the phase inversion method. In a single degradation test under simulated solar, the degradation rate of Rhodamine B by the modified membrane reached 80.18%. In the 4 cycles of degradation, the degradation rate of Rhodamine B by the modified membrane stabilized above 60%. In addition, under simulated sunlight, the modified membrane can be restored to the state before adsorption within 5 h, which is beneficial to its long-term recycling. The results show that the photocatalytic self-cleaning membrane loaded with C/TiO2 has a significant effect on the degradation of Rhodamine B dye wastewater under simulated sunlight conditions.

Funds：

国家自然科学基金创新研究群体科学基金项目（22021005）；辽宁省自然科学基金项目（2021-MS-116）；大连创新基金资助（2019J12SN68）

AuthorIntro：

崔瑛锴（1997-），男，黑龙江齐齐哈尔人，硕士研究生，从事光催化水处理的研究，E-mail：cyk2523070824@163.com

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