Rational Creation of the Second Xe-Matched Adsorption Site in a Covalent Organic Framework via a Digging-Patching Strategy for Simultaneously Boosting Xe Uptake and Xe/Kr Selectivity
/g. As a result, we observed a large enhancement in both Xe uptake and selectivity from 1.37 to 2.29 mmol/g and from 14.6 to 22.0. It was found that structural design by the digging (D) operation in the DP strategy functions to create dual adsorption sites for Xe, which helps to improve Xe uptake, while the patching (P) operation functions to optimize the second adsorption site with its size close to the kinetic diameters of Xe, which helps to improve Xe/Kr selectivity, finally breaking the inherent trade-off between Xe uptake and Xe/Kr selectivity. The actual Xe-Kr separation capability was further confirmed by breakthrough experiments. This work highlights a fundamental structural design of two-dimensional COFs for size-based gas separation.
Authors
- Rajamani Krishna (ORCID: https://orcid.org/0000-0002-4784-8530)
- 刘庆燕
- X H Liu
- Xiaojiang Xu (ORCID: https://orcid.org/0000-0003-4536-3406)
- Yuling Wang
- Banglin Chen
- Mingbiao Luo
- Feng Luo
- Huifang Ma
- Han Ren
- Li Wang
Institutions
- Fujian Normal University (CN)
- Zhejiang Normal University (CN)
- Ingenierie des Materiaux polymeres (FR)
- East China University of Technology (CN)
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology (CN)
- Beijing Research Institute of Uranium Geology (CN)
- Institute for Molecular Science (JP)
- Chemical Synthesis Lab (SG)
- South University (US)
- Jiangxi Normal University (CN)
- University of Amsterdam (NL)
Publication Details
- Journal
- Journal of the American Chemical Society
- Published
- 2026-04-30
- DOI
- https://doi.org/10.1021/jacs.6c00584
- Primary Topic
- Covalent Organic Framework Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Natural Science Foundation of Jiangxi Province