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Sci Adv

Title:		Programmed fluorine binding engineering in anion-pillared metal-organic framework for record trace acetylene capture from ethylene
Author(s):		Gu XW; Wu E; Wang JX; Wen HM; Chen B; Li B; Qian G;
Address:		"State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China. College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China. Fujian Provincial Key Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China"
Journal Title:		Sci Adv
Year:		2023
Volume:		20230804
Issue:		31
Page Number:		eadh0135 -
DOI:		10.1126/sciadv.adh0135
ISSN/ISBN:		2375-2548 (Electronic) 2375-2548 (Linking)
Abstract:		"Porous physisorbents are attractive candidates for selective capture of trace gas or volatile compounds due to their low energy footprints. However, many physisorbents suffer from insufficient sorbate-sorbent interactions, resulting in low uptake or inadequate selectivity when gases are present at trace levels. Here, we report a strategy of programmed fluorine binding engineering in anion-pillared metal-organic frameworks to maximize C(2)H(2) binding affinity for benchmark trace C(2)H(2) capture from C(2)H(4). A robust material (ZJU-300a) was elaborately designed to provide multiple-site fluorine binding model, resulting in an ultrastrong C(2)H(2) binding affinity. ZJU-300a exhibits a record-high C(2)H(2) uptake of 3.23 millimoles per gram (at 0.01 bar and 296 kelvin) and one of the highest C(2)H(2)/C(2)H(4) selectivity (1672). The adsorption binding of C(2)H(2) and C(2)H(4) was visualized by gas-loaded ZJU-300a structures. The separation capacity was confirmed by breakthrough experiments for 1/99 C(2)H(2)/C(2)H(4) mixtures, affording the maximal dynamic selectivity (264) and C(2)H(4) productivity of 436.7 millimoles per gram"
Keywords:
Notes:		"PubMed-not-MEDLINEGu, Xiao-Wen Wu, Enyu Wang, Jia-Xin Wen, Hui-Min Chen, Banglin Li, Bin Qian, Guodong eng 2023/08/04 Sci Adv. 2023 Aug 4; 9(31):eadh0135. doi: 10.1126/sciadv.adh0135. Epub 2023 Aug 4"