SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2023, Vol. 60 ›› Issue (8): 155-164.DOI: 10.1016/j.cjche.2023.01.019

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Two dimensional MoS2 finding its way towards constructing high-performance alkaline recovery membranes

Xinxin Li, Hongwei Shao, Shichao Zhang, Yong Li, Jingjing Gu, Qiang Huang, Jin Ran   

  1. Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Anhui 230009, China
  • Received:2022-10-27 Revised:2022-12-30 Online:2023-10-28 Published:2023-08-28
  • Contact: Jin Ran,E-mail:ranjin@hfut.edu.cn
  • Supported by:
    This project has been partially supported by the National Key Research and Development Program of China (2022YFB3805102), and the National Natural Science Foundation of China (22278105, 21978062).

Two dimensional MoS2 finding its way towards constructing high-performance alkaline recovery membranes

Xinxin Li, Hongwei Shao, Shichao Zhang, Yong Li, Jingjing Gu, Qiang Huang, Jin Ran   

  1. Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Anhui 230009, China
  • 通讯作者: Jin Ran,E-mail:ranjin@hfut.edu.cn
  • 基金资助:
    This project has been partially supported by the National Key Research and Development Program of China (2022YFB3805102), and the National Natural Science Foundation of China (22278105, 21978062).

Abstract: The available alkaline recovery membranes are currently dominated by polymeric materials, but they suffer from a permeation-selectivity trade-off and inferior chemical resistance. Robust two dimensional (2D) lamellar membranes with sub-nanometer wide channels are promising candidates for discerning OH- and other anions. Here, we report the development of alkaline recycling membranes through stacking MoS2 nanosheets. Benefiting from the ordered and narrow 2D channels, MoS2 membranes show excellent alkaline recovery performances. The OH- dialysis coefficient () and separation factor (S) towards simulated OH- and across the 500 nm thick MoS2 laminates reach 6.9×10-3 m·h-1 and 34.3 respectively. Furthermore, the chemical environments of MoS2 laminates were modulated by intercalating ionic poly(sodium 4-styrene sulfonate) (PSS@MoS2). The and S values of PSS@MoS2 membrane further improve to 11.7×10-3 m·h-1 and 49.8 respectively. Besides, both MoS2 and PSS@MoS2 membranes exhibit promising stability.

Key words: Alkaline recovery, Diffusion dialysis, Two dimensional membranes, MoS2, Poly(sodium 4-styrene sulfonate)

摘要: The available alkaline recovery membranes are currently dominated by polymeric materials, but they suffer from a permeation-selectivity trade-off and inferior chemical resistance. Robust two dimensional (2D) lamellar membranes with sub-nanometer wide channels are promising candidates for discerning OH- and other anions. Here, we report the development of alkaline recycling membranes through stacking MoS2 nanosheets. Benefiting from the ordered and narrow 2D channels, MoS2 membranes show excellent alkaline recovery performances. The OH- dialysis coefficient () and separation factor (S) towards simulated OH- and across the 500 nm thick MoS2 laminates reach 6.9×10-3 m·h-1 and 34.3 respectively. Furthermore, the chemical environments of MoS2 laminates were modulated by intercalating ionic poly(sodium 4-styrene sulfonate) (PSS@MoS2). The and S values of PSS@MoS2 membrane further improve to 11.7×10-3 m·h-1 and 49.8 respectively. Besides, both MoS2 and PSS@MoS2 membranes exhibit promising stability.

关键词: Alkaline recovery, Diffusion dialysis, Two dimensional membranes, MoS2, Poly(sodium 4-styrene sulfonate)