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Membrane adsorber with hierarchically porous HKUST-1 immobilized in membrane pores by flowing synthesis
  • +6
  • Ke Bai,
  • Senqing Fan,
  • Yu Chen,
  • Yilin Wang,
  • Jiaojiao Chen,
  • Zenghui Mai,
  • Jingyun Liu,
  • Lei Deng,
  • Zeyi Xiao
Ke Bai
Sichuan University

Corresponding Author:[email protected]

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Senqing Fan
Sichuan University
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Yu Chen
Sichuan University
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Yilin Wang
Sichuan University
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Jiaojiao Chen
Sichuan University
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Zenghui Mai
Sichuan University
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Jingyun Liu
Sichuan University
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Lei Deng
Sichuan University
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Zeyi Xiao
Sichuan University
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Abstract

A membrane adsorber with hierarchically porous HKUST-1 (HP-HKUST-1) immobilized in membrane pores has been fabricated by flowing synthesis. The XRD characteristics indicated that the structure integrity of the HP-HKUST-1 immobilized in the membrane pores can be kept after template agent removed. Other characteristics presented by XPS, FTIR, SEM, TEM and BET proved the effective immobilization of HP-HKUST-1 in membrane pores. Compared with hydrothermal HKUST-1 powder, the adsorption capacity for Congo red and Methylene blue adsorption can be increased several times by hydrothermal HP-HKUST-1 powder, owing to the mesopores with rich active sites for adsorption. When the solution was flowed through the membrane adsorber, the adsorption rate for these adsorbates increased significantly, owing to the enhanced mass transfer in the confined space of the membrane pores with micro or nano scale. After going through seven adsorption-desorption experiments, the membrane adsorber with HP-HKUST-1 immobilized in membrane pores shows a remarkable repeatability.
May 2022Published in Journal of Membrane Science volume 650 on pages 120424. 10.1016/j.memsci.2022.120424