Investigation of Preparation and Photocatalytic Properties of Hydrophilic PVDF/TiO2 Composite Membranes
YU Xiang1, GUI Jiuqing1, SONG Zihao1, ZHANG Xueyin1, DONG Xianhui1, LI Yue1, ZHANG Yaqi2
1 Department of Material Engineering, Henan University of Engineering, Zhengzhou 450007, China 2 College of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
Abstract: In this study, PVDF/TiO2 composite membranes were prepared via solution scraping method and ultrasonic cleaning which can drill and change its hydrophilic. Micromorphology, mechanical properties and photocatalytic properties of PVDF/TiO2 composite membranes were studied and analyzed. The results show that: the tensile strength and photocatalytic degradation ability of samples increase at first and then get worse with increasing of TiO2, and they simultaneously reach the maximum when addition of 10% TiO2. Furthermore, the photocatalytic degradation of samples conforms to the first-order kinetic models. Moreover, with the increment of ultrasonic time, the sample membranes are becoming less hydrophilic but they are still hydrophilic membranes, and their photocatalytic degradation rate increases first and then decreases. Further, when the ultrasonic time is 3 h, the photocatalytic degradation rate reaches the extreme value.
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2021, Vol. 35 
