Single-crystal 2D covalent organic frameworks for high-capacity methane storage
Abstract
Abstract 2D covalent organic frameworks (COFs) usually possess a polycrystalline nature as well as lower porosity and surface area than 3D counterparts, restraining their exploration over gas storage applications. Herein, a substituent strategy has been proposed and employed to generate three robust single-crystal 2D COFs isomers with atom-resolution structures determined by 3D electron diffraction. Among three isomers, a precise engineering of their interlayer distance affords the highest Brunauer−Emmett−Teller surface area of ~2100 m 2 g −1 and the largest pore volume of 1.40 cm 3 g −1 for the desolvated GZU-1. This COF shows the highest total volumetric methane uptake of 240 cm 3 (STP) cm −3 at 273 K and 100 bar among 2D COFs, even comparable with those for excellent 3D MOFs. This work not only delivers unique insight into the design of 2D single-crystal COFs by interlayer stacking regulation, but also promotes the application of highly porous 2D COFs in gas storage.
Article Details
Authors (14)
Baoqiu Yu
Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, School of Chemistry and Biological Engineering
Felipe L. Oliveira
Wenliang Li
Qingmei Xu
Xu Ding
State Key Laboratory of Chemo/Bio-Sensing, College of Chemistry and Chemical Engineering
Shangwei Yuan
Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, School of Chemistry and Chemical Engineering
Yucheng Jin
Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, School of Chemistry and Biological Engineering
Hua Liu
Hailong Wang
Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, School of Chemistry and Biological Engineering
Xin Xiao
Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, School of Chemistry and Chemical Engineering
Jingping Zhang
Department of Chemistry
Guillaume Maurin
Banglin Chen
Jianzhuang Jiang
Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, School of Chemistry and Biological Engineering