摘要
共价有机框架(COFs)是一类通过共价键连接的新兴材料,大部分具有高的热/化学稳定性(除硼酸类COFs)、永久的孔隙率、较大的比表面积和较好的结晶性。此外,COFs中的单体单元结构可调并且可以与许多过渡金属离子配位来提供催化活性位点,这一系列优势使得COFs有利于催化各种反应。其中,COFs对CO_(2)还原反应(CO_(2)RR)有着优异的催化作用。这主要是因为COFs可调控的孔结构使得它可以吸附大量CO_(2),而且COFs中的π-π堆积结构能促进电荷转移,可以大大提高CO_(2)还原效率。COFs可作为光/电催化剂高效地将CO_(2)还原为CO、CH_(2)和HCOOH等多种产物。本综述讨论了由COFs催化的CO_(2)RR的重要成果,包括光/电催化CO_(2)RR和光电耦合CO_(2)RR。此外,还对COFs作为CO_(2)RR催化剂的未来发展进行了展望。
Covalent organic frameworks(COFs)are a class of emerging materials connected by covalent bonds,which have high thermal/chemical stability(except boric acid COFs),permanent porosity,large specific surface area and good crystallinity.In addition,the structure of the monomer unit in COFs is adjustable and can coordinate with many transition metal ions to provide catalytic active sites.These advantages make COFs helpful to catalyze various reactions.Among them,COFs have an excellent catalytic effect on the CO_(2)reduction reaction(CO_(2)RR).This is mainly because the adjustable pore structure of COFs allows them to adsorb a large amount of CO_(2)and theπ-πstacking structure in COFs can promote charge transfer,which can greatly improve the efficiency of CO_(2)reduction.COFs can be used as photo/electrocatalysts to efficiently reduce CO_(2)to CO,CH_(2),HCOOH and other products.This review discusses the important achievements of CO_(2)RR catalyzed by COFs,including photo/electrocatalytic CO_(2)RR and photoelectric coupling CO_(2)RR.In addition,the future development of COFs as CO_(2)RR catalysts is also prospected.
作者
商林杰
刘江
兰亚乾
SHANG Lin-Jie;LIU Jiang;LAN Ya-Qian(School of Chemistry and Materials Science,Nanjing Normal University,Nanjing 210023,China;School of Chemistry,South China Normal University,Guangzhou 510006,China)
出处
《应用化学》
CAS
CSCD
北大核心
2022年第4期559-584,共26页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金(Nos.21871141,21871142,22071109,92061101)资助。
关键词
共价有机框架
光催化
电催化
二氧化碳还原
Covalent organic frameworks
Photocatalysis
Electrocatalysis
Carbon dioxide reduction
