Chemical Research in Chinese Universities ›› 2019, Vol. 35 ›› Issue (4): 714-720.doi: 10.1007/s40242-019-8401-5

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Self-cleaning Anti-fouling TiO2/Poly(aryl ether sulfone) Composite Ultrafiltration Membranes

GENG Wenzhe, JIANG Hongchuan, YANG Xia, FENG Yong, WANG Xinyu, GENG Zhi, HUO Mingxin   

  1. Jilin Engineering Lab for Water Pollution Control and Resources Recovery, College of Environment, Northeast Normal University, Changchun 130117, P. R. China
  • Received:2018-12-21 Revised:2019-02-26 Online:2019-08-01 Published:2019-08-01
  • Contact: GENG Zhi E-mail:gengz100@nenu.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos.51508078, 51478095), the Jilin Provincial Science and Technology Development Project of China(No.20160520023JH), the Science and Technology Research Project of the Jilin Provincial Education Department, China(No.JJKH20180021KJ), and the Fundamental Research Funds for the Central Universities of China(No.2412018ZD016).

Abstract: A series of novel TiO2/poly(aryl ether sulfone) ultrafiltration membranes with anti-fouling and self-cleaning properties was designed and prepared. First, anti-photocatalytic degraded fluorine contained poly(aryl ether sulfone) matrix(PAES-F) was synthesized. Then the composite membranes were prepared via TiO2 nanoparticles and PAES-F polymer matrix by solution blending and non-solvent induced phase inversion methods. Further, separation efficiency, fouling behavior and self-cleaning property of the composite ultrafiltration(UF) membranes were investigated by dead-end filtration experiments using a polyacrylamide solution. The composite UF membranes exhibited outstanding self-cleaning efficiency and anti-photocatalytic degraded property after exposure to simulated sunlight irradiation. The water flux recovery ratios(FRR) of the optimal composite UF membranes could reach 74.24%, which was attributable to photocatalytic degradation of the organic contaminant by TiO2. And the retention rates of the composite UF membranes could maintain over 97%, which indicated the excellent photocatalytic degradation resistance of the fluorine contained PAES-F matrix. The novel high performance composite UF membranes have a broad application prospect in water treatment.

Key words: Poly(aryl ether sulfone), Ultrafiltration, Anti-fouling, Self-cleaning, Titanium dioxide