An Azine-Linked Covalent Organic Framework: Synthesis, Characterization and Efficient Gas Storage

Zhongping Li; Yongfeng Zhi; Xiao Feng; Xuesong Ding; Yongcun Zou; Xiaoming Liu; Ying Mu

doi:10.1002/chem.201501206

An Azine-Linked Covalent Organic Framework: Synthesis, Characterization and Efficient Gas Storage

Chemistry. 2015 Aug 17;21(34):12079-84. doi: 10.1002/chem.201501206. Epub 2015 Jul 14.

Authors

Zhongping Li¹, Yongfeng Zhi¹, Xiao Feng², Xuesong Ding³, Yongcun Zou⁴, Xiaoming Liu⁵, Ying Mu¹

Affiliations

¹ State Key Laboratory for Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012 (P. R. China), Fax: (+86) 43185168421.
² School of Chemistry, Beijing Institute of Technology, Beijing, 100081 (P. R. China).
³ CAS Key Laboratory of Nanosystem and Hierarchy Fabrication, National Center for Nanoscience and Technology, Beijing 100190 (P. R. China).
⁴ Department State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun, 130012 (P. R. China).
⁵ State Key Laboratory for Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012 (P. R. China), Fax: (+86) 43185168421. xm_liu@jlu.edu.cn.

PMID: 26177594
DOI: 10.1002/chem.201501206

Abstract

A azine-linked covalent organic framework, COF-JLU2, was designed and synthesized by condensation of hydrazine hydrate and 1,3,5-triformylphloroglucinol under solvothermal conditions for the first time. The new covalent organic framework material combines permanent micropores, high crystallinity, good thermal and chemical stability, and abundant heteroatom activated sites in the skeleton. COF-JLU2 possesses a moderate BET surface area of over 410 m(2) g(-1) with a pore volume of 0.56 cm(3) g(-1) . Specifically, COF-JLU2 displays remarkable carbon dioxide uptake (up to 217 mg g(-1) ) and methane uptake (38 mg g(-1) ) at 273 K and 1 bar, as well as high CO2 /N2 (77) selectivity. Furthermore, we further highlight that it exhibits a higher hydrogen storage capacity (16 mg g(-1) ) than those of reported COFs at 77 K and 1 bar.

Keywords: carbon dioxide uptake; covalent organic framework; hydrogen storage; porous material; selectivity.