SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2022, Vol. 42 ›› Issue (2): 42-48.DOI: 10.1016/j.cjche.2021.06.004

• Recent Advances in Adsorptive Separation Materials and Technologies • 上一篇    下一篇

Decorating MXene with tiny ZIF-8 nanoparticles: An effective approach to construct composites for water pollutant removal

Chen Gu1, Wenqiang Weng1, Cong Lu1, Peng Tan1, Yao Jiang1, Qiang Zhang2, Xiaoqin Liu1, Linbing Sun1   

  1. 1. State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Material (SICAM), College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China;
    2. Department of Chemistry, Washington State University, Pullman, Washington 99163, United States
  • 收稿日期:2021-03-11 修回日期:2021-05-28 出版日期:2022-02-28 发布日期:2022-03-30
  • 通讯作者: Xiaoqin Liu,E-mail:liuxq@njtech.edu.cn;Linbing Sun,E-mail:lbsun@njtech.edu.cn
  • 基金资助:
    We acknowledge the financial support of this work by the National Natural Science Foundation of China (21878149, 22078155, and 21808110), the project funded by China Postdoctoral Science Foundation (2020M681567), Postgraduate Research & Practice Innovation Program of Jiangsu Province (SJCX20_0358) and the Natural Science Foundation of Jiangsu Province (BK20180709).

Decorating MXene with tiny ZIF-8 nanoparticles: An effective approach to construct composites for water pollutant removal

Chen Gu1, Wenqiang Weng1, Cong Lu1, Peng Tan1, Yao Jiang1, Qiang Zhang2, Xiaoqin Liu1, Linbing Sun1   

  1. 1. State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Material (SICAM), College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China;
    2. Department of Chemistry, Washington State University, Pullman, Washington 99163, United States
  • Received:2021-03-11 Revised:2021-05-28 Online:2022-02-28 Published:2022-03-30
  • Contact: Xiaoqin Liu,E-mail:liuxq@njtech.edu.cn;Linbing Sun,E-mail:lbsun@njtech.edu.cn
  • Supported by:
    We acknowledge the financial support of this work by the National Natural Science Foundation of China (21878149, 22078155, and 21808110), the project funded by China Postdoctoral Science Foundation (2020M681567), Postgraduate Research & Practice Innovation Program of Jiangsu Province (SJCX20_0358) and the Natural Science Foundation of Jiangsu Province (BK20180709).

摘要: MXenes have attracted increasing research enthusiasm owing to their unique physical and chemical properties. Although MXenes exhibit exciting potential in cations adsorption due to their unique surface groups, the adsorption capacity is limited by the low specific surface area and undeveloped porosity. Our work aims at enhancing the adsorption performance of a well-known MXene, Ti3C2Tx, for methylene blue (MB) by decorating tiny ZIF-8 nanoparticles in the interlayer. After the incorporation of ZIF-8, suitable interspace in the layers resulting from the distribution of tiny ZIF-8 appears. When employing in MB, the adsorption capacity of composites can reach up to 107 mg·g-1 while both ZIF-8 (3 mg·g-1) and Ti3C2Tx (9 mg·g-1) show nearly no adsorption capacity. The adsorption mechanism was explored, and the good adsorption capacity is caused by the synergistic effect of ZIF-8 and Ti3C2Tx, for neither of them is of suitable interspace or surface groups for MB adsorption. Our work might pave the way for constructing functional materials based on the introduction of nanoparticles into layered materials for various adsorption applications.

关键词: Ti3C2Tx MXene, MOF nanoparticles, Adsorption, Composites

Abstract: MXenes have attracted increasing research enthusiasm owing to their unique physical and chemical properties. Although MXenes exhibit exciting potential in cations adsorption due to their unique surface groups, the adsorption capacity is limited by the low specific surface area and undeveloped porosity. Our work aims at enhancing the adsorption performance of a well-known MXene, Ti3C2Tx, for methylene blue (MB) by decorating tiny ZIF-8 nanoparticles in the interlayer. After the incorporation of ZIF-8, suitable interspace in the layers resulting from the distribution of tiny ZIF-8 appears. When employing in MB, the adsorption capacity of composites can reach up to 107 mg·g-1 while both ZIF-8 (3 mg·g-1) and Ti3C2Tx (9 mg·g-1) show nearly no adsorption capacity. The adsorption mechanism was explored, and the good adsorption capacity is caused by the synergistic effect of ZIF-8 and Ti3C2Tx, for neither of them is of suitable interspace or surface groups for MB adsorption. Our work might pave the way for constructing functional materials based on the introduction of nanoparticles into layered materials for various adsorption applications.

Key words: Ti3C2Tx MXene, MOF nanoparticles, Adsorption, Composites