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Metal and Co‐Catalyst Free CO 2 Conversion with a Bifunctional Covalent Organic Framework (COF)
Author(s) -
He Hongming,
Zhu QianQian,
Zhang WenWen,
Zhang HanWen,
Chen Jing,
Li ChengPeng,
Du Miao
Publication year - 2020
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.202000949
Subject(s) - bifunctional , catalysis , chemistry , bifunctional catalyst , reusability , nucleophile , epoxide , covalent bond , adsorption , metal , heterogeneous catalysis , combinatorial chemistry , organic chemistry , software , computer science , programming language
The excessive growth of CO 2 brings about the global warming and subsequent climate change, which is an increased public concern issue. Currently, the chemical fixation of CO 2 is identified as one of the most effective approaches to reduce and utilize CO 2 . Thus, it is a great challenge to rationally design and construct high‐efficient catalysts for CO 2 conversion and utilization. Here, a unique metal‐free bifunctional COF heterogeneous catalyst was successfully achieved via the post‐modified strategy, which simultaneously bears −COOH as Brønsted acidic center and Br − ion as nucleophilic active site. By virtue of abundant porosity, excellent stability, favorable CO 2 adsorption, and dual catalytic sites, this material can efficiently facilitate the coupling reaction of CO 2 with epoxide to form cyclic carbonate without co‐catalyst under mild conditions. Moreover, it has excellent reusability, without significant reduction of the catalytic activity after at least five cycles.