Elucidating the electronic metal-support interaction enhanced hydrogen evolution activity on Ti_(3)C_(2)T_(x)MXene basal plane by scanning electrochemical microscopy

作     者：Sisi Jiang Tong Sun Chaoqun Gu Yingfei Ma Zhenyu Wang Dengchao Wang Zonghua Wang Sisi Jiang;Tong Sun;Chaoqun Gu;Yingfei Ma;Zhenyu Wang;Dengchao Wang;Zonghua Wang

作者机构：College of Chemistry and Chemical EngineeringShandong Sino-Japanese Center for Collaborative Research of Carbon NanomaterialsInstrumental Analysis Center of Qingdao UniversityQingdao UniversityQingdao 266071China School of Chemical SciencesUniversity of Chinese Academy of ScienceBeijing 100190China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2023年第16卷第7期

页      面：8902-8909页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：The support of this work by the National Natural Science Foundation of China(No.22204088) the Natural Science Foundation of Shandong Province(Nos.ZR202103040753 and ZR2020MB063) the Taishan Scholar Program of Shandong Province(No.ts201511027)is gratefully acknowledged 

主　　题：electrocatalysis nanoelectrochemistry MXenes scanning electrochemical microscopy electronic metal-support interaction 

摘      要：MXene,a family of two-dimensional(2D)transition metal carbides and nitrides,has intriguing electrochemical energy storage and electrocatalysis *** the electronic metal-support interaction(EMSI)effect is one effective strategy to optimize the catalytic efficiency for MXene-based ***,most of the studies concentrate on optimizing the performance of metals rather than supported substrates by using this *** this work,we mainly investigate the influence of an EMSI effect on the performance of the supported substrate(Ti_(3)C_(2)T_(x)MXene).Detailed scanning electrochemical microscopy and numerical simulations results reveal that the charge distribution on the Ti_(3)C_(2)T_(x)basal plane(approximate 100 nm-radius)surrounding Au nanoparticles(20 nm-radius)was significantly enhanced as a result of-O being the majority surface functional group on Ti_(3)C_(2)T_(x)that was attached to Au nanoparticle,and the related hydrogen evolution reaction(HER)activity was much better than that of the unaffected Ti_(3)C_(2)T_(x)basal plane,which even can be comparable to that of *** finding will be helpful for designing new strategies to enhance the overall catalytic performance of various MXene-based composites.