CO2 Dynamics in a Flexible Metal-Organic Framework with Gate-Opening Phenomenon

被引：1

作者：

Xu, Jiabin ^{[1
,2
,3
,4
]}

Zhang, Wanli ^{[1
,2
]}

Liu, Jingyan ^{[1
,2
]}

Zhong, Jun ^{[3
,4
]}

Sham, Tsun-Kong ^{[1
,2
]}

Huang, Yining ^{[1
,2
]}

机构：

[1] Univ Western Ontario, Dept Chem, London, ON N6A? 5B7, Canada

[2] Univ Western Ontario, Soochow Western Ctr Synchrotron Radiat Res, London, ON N6A 5B7, Canada

[3] Soochow Univ, Inst Funct Nano & Soft Mat Lab FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Peoples R China

[4] Soochow Univ, Soochow Western Ctr Synchrotron Radiat Res, Suzhou 215123, Peoples R China

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2024年 / 30卷 / 71期

基金：

加拿大健康研究院; 加拿大自然科学与工程研究理事会;

关键词：

Solid-state NMR; MOF; Gate phenomenon; CO2; adsorption; ELM-11; MAGNETIC-RESONANCE; CARBON-DIOXIDE; COORDINATION POLYMERS; NMR-SPECTROSCOPY; ADSORPTION; SORPTION; DIFFRACTION; BEHAVIOR; MOTION; MOFS;

D O I：

10.1002/chem.202402775

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

As a promising porous material for CO2 adsorption and storage, elastic layer-structured metal-organic framework-11 (ELM-11) has attracted significant attention owing to its distinct gate-opening phenomenon. There is a sharp increase in CO2 uptake once reaching the gate-opening threshold pressure. To better understand this gate-opening mechanism, we investigated its transition process from the perspective of CO2 dynamics and its interaction with the framework via variable-temperature C-13 solid-state nuclear magnetic resonance spectroscopy. Our findings revealed that during the gate-opening process, CO2 is initially strongly adsorbed at one site when the gate only slightly opens, while two distinct types of CO2 molecules exist when the gate fully opens. B-11, C-13, and F-19 magic-angle spinning NMR, in conjunction with in-situ XANES experiments, were also conducted to probe the location of adsorption sites.

引用

页数：9

共 53 条

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