SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2024, Vol. 66 ›› Issue (2): 31-39.DOI: 10.1016/j.cjche.2023.11.004

• Full Length Article • 上一篇    下一篇

High performance photodegradation resistant PVA@TiO2/carboxyl-PES self-healing reactive ultrafiltration membrane

Yu Liang1, Yuanfang Fan1, Zhongmin Su2, Mingxin Huo1, Xia Yang1, Hongliang Huo1, Chi Wang1, Zhi Geng1   

  1. 1. College of Environment, Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun 130117, China;
    2. School of Science, Hainan University, Haikou 570225, China
  • 收稿日期:2023-08-29 修回日期:2023-11-02 出版日期:2024-02-28 发布日期:2024-04-20
  • 通讯作者: Chi Wang,E-mail:wangc688@nenu.edu.cn;Zhi Geng,E-mail:gengz100@nenu.edu.cn
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (51978133, 52100026, U20A20322, 52170151, 51978132), the Fundamental Research Funds for the Central Universities of China (2412021QD022), the Key Research and Development Project of Hainan Province (ZDYF2022SHFZ298), the Industrialization Cultivation Project of Jilin Provincial Department of Education (JJKH20221174CY).

High performance photodegradation resistant PVA@TiO2/carboxyl-PES self-healing reactive ultrafiltration membrane

Yu Liang1, Yuanfang Fan1, Zhongmin Su2, Mingxin Huo1, Xia Yang1, Hongliang Huo1, Chi Wang1, Zhi Geng1   

  1. 1. College of Environment, Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun 130117, China;
    2. School of Science, Hainan University, Haikou 570225, China
  • Received:2023-08-29 Revised:2023-11-02 Online:2024-02-28 Published:2024-04-20
  • Contact: Chi Wang,E-mail:wangc688@nenu.edu.cn;Zhi Geng,E-mail:gengz100@nenu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (51978133, 52100026, U20A20322, 52170151, 51978132), the Fundamental Research Funds for the Central Universities of China (2412021QD022), the Key Research and Development Project of Hainan Province (ZDYF2022SHFZ298), the Industrialization Cultivation Project of Jilin Provincial Department of Education (JJKH20221174CY).

摘要: The occurrence of ultrafiltration (UF) membrane fouling frequently hampers the sustainable advancement of UF technology. Reactive self-cleaning UF membranes can effectively alleviate the problem of membrane fouling. Nevertheless, the self-cleaning process may accelerate membrane aging. Addressing these concerns, we present an innovative design concept for composite self-healing materials based on self-cleaning UF membranes. To begin, TiO2 nanoparticles were incorporated into the polymer molecular structure via molecular design, resulting in the synthesis of TiO2/carboxyl-polyether sulfone (PES) hybrid materials. Subsequently, the nonsolvent-induced phase inversion technique was employed to prepare a novel of UF membrane. Lastly, a polyvinyl alcohol (PVA) hydrogel coating was applied to the hybrid UF membrane surface to create PVA@TiO2/carboxyl-PES self-healing reactive UF membranes. By establishing a covalent bond, the TiO2 nanoparticles were effectively and uniformly dispersed within the UF membrane, leading to exceptional self-cleaning properties. Furthermore, the water-absorbing and swelling properties of PVA hydrogel, along with its capacity to form hydrogen bonds with water molecules, resulted in UF membranes with improved hydrophilicity and active self-healing abilities. The results demonstrated that the water contact angle of PVA@5%TiO2/carboxyl-PES UF membrane was 43.1°. Following a 1-h exposure to simulated solar exposure, the water flux recovery ratio increased from 48.16% to 81.03 %. Moreover, even after undergoing five cycles of 12-h simulated sunlight exposure, the UF membranes exhibited a consistent retention rate of over 97 %, thus fully demonstrating their exceptional self-cleaning, antifouling, and self-healing capabilities. We anticipate that the self-healing reactive UF membrane system will serve as a pioneering and comprehensive solution for the self-cleaning antifouling challenges encountered in UF membraneswhile also effectively mitigating the aging effects of reactive UF membranes.

关键词: Ultrafiltration membrane, Self-cleaning, Self-healing, Poly (aryl ether sulfone)

Abstract: The occurrence of ultrafiltration (UF) membrane fouling frequently hampers the sustainable advancement of UF technology. Reactive self-cleaning UF membranes can effectively alleviate the problem of membrane fouling. Nevertheless, the self-cleaning process may accelerate membrane aging. Addressing these concerns, we present an innovative design concept for composite self-healing materials based on self-cleaning UF membranes. To begin, TiO2 nanoparticles were incorporated into the polymer molecular structure via molecular design, resulting in the synthesis of TiO2/carboxyl-polyether sulfone (PES) hybrid materials. Subsequently, the nonsolvent-induced phase inversion technique was employed to prepare a novel of UF membrane. Lastly, a polyvinyl alcohol (PVA) hydrogel coating was applied to the hybrid UF membrane surface to create PVA@TiO2/carboxyl-PES self-healing reactive UF membranes. By establishing a covalent bond, the TiO2 nanoparticles were effectively and uniformly dispersed within the UF membrane, leading to exceptional self-cleaning properties. Furthermore, the water-absorbing and swelling properties of PVA hydrogel, along with its capacity to form hydrogen bonds with water molecules, resulted in UF membranes with improved hydrophilicity and active self-healing abilities. The results demonstrated that the water contact angle of PVA@5%TiO2/carboxyl-PES UF membrane was 43.1°. Following a 1-h exposure to simulated solar exposure, the water flux recovery ratio increased from 48.16% to 81.03 %. Moreover, even after undergoing five cycles of 12-h simulated sunlight exposure, the UF membranes exhibited a consistent retention rate of over 97 %, thus fully demonstrating their exceptional self-cleaning, antifouling, and self-healing capabilities. We anticipate that the self-healing reactive UF membrane system will serve as a pioneering and comprehensive solution for the self-cleaning antifouling challenges encountered in UF membraneswhile also effectively mitigating the aging effects of reactive UF membranes.

Key words: Ultrafiltration membrane, Self-cleaning, Self-healing, Poly (aryl ether sulfone)