標題: Synthesis of [3+3] beta-ketoenamine-tethered covalent organic frameworks (COFs) for high-performance supercapacitance and CO2 storage
作者: El-Mandy, Ahmed F. M.
Hung, Ying-Hui
Mansoure, Tharwat Hassan
Yu, Hsiao-Hua
Hsu, Yu-Shen
Wu, Kevin C. W.
Ku, Shiao-Wei
交大名義發表
National Chiao Tung University
關鍵字: Covalent-organic frameworks (COFs);Ketoenamine;Schiff-base [3+3] polycondensations;Supercapacitors;CO2 storage
公開日期: 1-十月-2019
摘要: We report three new beta-ketoenamine-linked covalent organic frameworks (COFs) prepared through Schiff-base [3+3] polycondensations of 1,3,5-triformylphloroglucinol (TFP-3OHCHO) with three tris(aminophenyl)-presenting derivatives-featuring amino, carbazole, and pyridine units, respectively under solvothermal conditions. The resultant TFP-COFs possessed high BET specific surface area up to 686 m(2) g(-1) and excellent crystallinity, which showed excellent electrochemical specific capacitances (up to 291.1 F g(-1)) and CO2 uptake efficiency up to 200 mg g(-1) at 273 K. We propose the enhanced performance in supercapacitor and gas storage is owing to the conjugated enamine structures with redox-active triphenyl amino, carbazole, and pyridine moieties. In addition, we further investigate the formation mechanism of the spherical TFP-TPA COF by studying the morphological changes over time. The presence of more highly planar monomer units in the hexagonal structures of the resultant COFs led to stronger quadrupolar interaction with the included CO2 molecules. (C) 2019 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.jtice.2019.07.016
http://hdl.handle.net/11536/152785
ISSN: 1876-1070
DOI: 10.1016/j.jtice.2019.07.016
期刊: JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
Volume: 103
起始頁: 199
結束頁: 208
顯示於類別:期刊論文