摘要
单原子催化剂具有高原子利用率、高催化活性和高选择性等优点,兼具了均相催化剂“独立活性位点”和非均相催化剂“易循环利用”的特点,有效解决贵金属昂贵稀少的缺陷。其中载体不仅能影响单原子的稳定性,还影响其电子结构,从而影响催化性能。作为一种新型二维无机材料,MXene具有比表面积大、带隙可调、导电性好和螯合位丰富等特点,是制备单原子催化剂的理想载体材料。本文简要总结了MXene的结构特点,综述了MXene基单原子催化剂的制备策略,并着重介绍了MXene基单原子催化剂在电化学能源转换领域的应用,包括析氢反应、氧电极反应、氮还原反应、二氧化碳还原反应,以及在电池储能方面的应用。最后,总结了当前MXene基单原子催化剂在研究和实用方面所面临的挑战与机遇。
Single-atom catalysts(SACs)have been attracting ever-increasing interest in the fields of both fundamental research and industry applications,for their unique advantages such as high atomic utilization efficiency,high activity,and high selectivity.On the other hand,the preparation of SCAs is still quite challenging.A proper carrier of the active atoms is crucial for the preparation of SCAs,which affects the stability,electron structure,and thus reactivity.MXene,a novel series of two-dimensional inorganic materials with large specific surface area,adjustable bandgap,superior electronic conductivity,as well as abundant anchor sites have emerged as an ideal platform for confining single atoms.Herein,the structural superiority and synthetic strategies of MXene as SCAs support are reviewed.The unique structure and property of MXene based SACs make the material superior for electrochemical catalysis.Here the reactions including hydrogen evolution reaction(HER),oxygen evolution reaction(OER),nitrogen reduction reaction(NRR),carbon dioxide reduction reaction(CRR),as well as battery energy storage are highlighted.Finally,the challenges and opportunities of MXene based SACs in the fields of research and practical applications are summarized and prospected.It is hoped that this review article could provide insights for the development of advanced MXene-based SCAs.
作者
景远聚
康淳
林延欣
高杰
王新波
Yuanju Jing;Chun Kang;Yanxin Lin;Jie Gao;Xinbo Wang(School of Environmental Science and Engineering,Shandong University,Qingdao 266237,China;Qingdao Hengyuan Thermoelectricity Co.,Ltd,Qingdao 266510,China;School of Innovation and Entrepreneurship,Shandong University,Qingdao 266237,China;Shenzhen Graduate School of Shandong University,Shenzhen 518000,China)
出处
《化学进展》
SCIE
CAS
CSCD
北大核心
2022年第11期2373-2385,共13页
Progress in Chemistry
基金
国家自然科学基金项目(No.21908018,22078174)
广东省基础与应用基础研究(No.2022A1515011856)
山东省教育厅青年创新团队(No.2019KJD007)
大连理工大学精细化工重点实验室开放课题(No.KF2114)资助。
关键词
MXene
单原子催化剂
电化学催化
非均相催化
能源
MXene
single-atom catalyst
electrochemical catalysis
heterogeneous catalysis
energy
