SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2023, Vol. 58 ›› Issue (6): 103-111.DOI: 10.1016/j.cjche.2022.11.005

• Full Length Article • 上一篇    下一篇

In-situ incorporation of halloysite nanotubes with 2D zeolitic imidazolate framework-L based membrane for dye/salt separation

Yafei Su1, Xuke Zhang1, Hui Li1,2, Donglai Peng3, Yatao Zhang1   

  1. 1. School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China;
    2. Research Department of New Materials, Zhengzhou Institute of Emerging Industrial Technology, Zhengzhou 450045, China;
    3. School of Material & Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
  • 收稿日期:2022-06-07 修回日期:2022-11-17 出版日期:2023-06-28 发布日期:2023-08-31
  • 通讯作者: Hui Li,E-mail:hli@ipezz.ac.cn;Yatao Zhang,E-mail:zhangyatao@zzu.edu.cn
  • 基金资助:
    This work was supported by the Excellent Youth Foundation of Henan Scientific Committee, China (222300420018) and Key Scientific Research Projects in Universities of Henan Province, China (21zx006). The authors gratefully thank Center of Advanced Analysis & Computational Science (Zhengzhou University) for help with the membrane characterization.

In-situ incorporation of halloysite nanotubes with 2D zeolitic imidazolate framework-L based membrane for dye/salt separation

Yafei Su1, Xuke Zhang1, Hui Li1,2, Donglai Peng3, Yatao Zhang1   

  1. 1. School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China;
    2. Research Department of New Materials, Zhengzhou Institute of Emerging Industrial Technology, Zhengzhou 450045, China;
    3. School of Material & Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
  • Received:2022-06-07 Revised:2022-11-17 Online:2023-06-28 Published:2023-08-31
  • Contact: Hui Li,E-mail:hli@ipezz.ac.cn;Yatao Zhang,E-mail:zhangyatao@zzu.edu.cn
  • Supported by:
    This work was supported by the Excellent Youth Foundation of Henan Scientific Committee, China (222300420018) and Key Scientific Research Projects in Universities of Henan Province, China (21zx006). The authors gratefully thank Center of Advanced Analysis & Computational Science (Zhengzhou University) for help with the membrane characterization.

摘要: Layered assembled membranes of 2D leaf-like zeolitic imidazolate frameworks (ZIF-L) nanosheets have received great attention in the field of water treatment due to the porous structure and excellent antibacterial ability, but the dense accumulation on the membrane surface and the low permeate flux greatly hinder their application. Herein, we synthesized mHNTs (modified halloysite nanotubes)/ZIF-L nanocomposites on modified mHNTs by in situ growth method. Interestingly, due to the different size of mHNTs and ZIF-L, mHNTs were packed in ZIF-L nanosheets. The hollow mHNTs provided additional transport channels for water molecules, and the accumulation of the ZIF-L nanosheets was decreased after assembling mHNTs/ZIF-L nanocomposites into membrane by filtration. The prepared mHNTs/ZIF-L membrane presented high permeate flux (59.6 L·m-2·h-1), which is 2-4 times of the ZIF-L membranes (14.8 L·m-2·h-1). Moreover, mHNTs/ZIF-L membranes are intrinsically antimicrobial, which exhibit extremely high bacterial resistance. We provide a controllable strategy to improve 2D ZIF-L assembles, and develops novel membranes using 2D package structure as building units.

关键词: Zeolitic imidazolate framework, Halloysite nanotubes, 2D nanocomposites, In-situ growth, Dye/salt separation membrane, Antibacterial property

Abstract: Layered assembled membranes of 2D leaf-like zeolitic imidazolate frameworks (ZIF-L) nanosheets have received great attention in the field of water treatment due to the porous structure and excellent antibacterial ability, but the dense accumulation on the membrane surface and the low permeate flux greatly hinder their application. Herein, we synthesized mHNTs (modified halloysite nanotubes)/ZIF-L nanocomposites on modified mHNTs by in situ growth method. Interestingly, due to the different size of mHNTs and ZIF-L, mHNTs were packed in ZIF-L nanosheets. The hollow mHNTs provided additional transport channels for water molecules, and the accumulation of the ZIF-L nanosheets was decreased after assembling mHNTs/ZIF-L nanocomposites into membrane by filtration. The prepared mHNTs/ZIF-L membrane presented high permeate flux (59.6 L·m-2·h-1), which is 2-4 times of the ZIF-L membranes (14.8 L·m-2·h-1). Moreover, mHNTs/ZIF-L membranes are intrinsically antimicrobial, which exhibit extremely high bacterial resistance. We provide a controllable strategy to improve 2D ZIF-L assembles, and develops novel membranes using 2D package structure as building units.

Key words: Zeolitic imidazolate framework, Halloysite nanotubes, 2D nanocomposites, In-situ growth, Dye/salt separation membrane, Antibacterial property