Non-Interpenetrated 3D Covalent Organic Framework with Dia Topology for Au Ions Capture

Minghao Liu, Hui Yuan Kong, Shuai Bi, Xuesong Ding, George Zheng Chen, Jun He, Qing Xu, Bao Hang Han, Gaofeng Zeng

Research output: Journal PublicationArticlepeer-review

18 Citations (Scopus)


The 3D covalent organic frameworks (COFs) have attracted considerable attention owing to their unique structural characteristics. However, most of 3D COFs have interpenetration phenomena, which will result in decreased surface area and porosities, and thus limited their applications in molecular/gas capture. Developing 3D COFs with non-fold interpenetration is challenging but significant because of the existence of non-covalent interactions between the adjacent nets. Herein, a new 3D COF (BMTA-TFPM-COF) with dia topology and non-fold interpenetration for Au ion capture is first demonstrated. The constructed COF exhibits a high Brunauer–Emmett–Teller surface area of 1924 m2 g−1, with the pore volume of 1.85 cm3 g−1. The high surface area and abundant cavities as well as the abundant exposed C=N linkages due to the non-interpenetration enable to absorb Au3+ with high capacity (570.18 mg g−1), selectivity (99.5%), and efficiency (68.3% adsorption of maximum capacity in 5 min). This work provides a new strategy to design 3D COFs for ion capture.

Original languageEnglish
Article number2302637
JournalAdvanced Functional Materials
Issue number33
Publication statusPublished - 23 Apr 2023


  • 3D topology
  • Au ions recovery
  • covalent organic frameworks
  • gas sorption

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


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