Recent advances in Raman spectroelectrochemistry on single-crystal surfaces  

作　　者：Quan-Feng He Jia Yu Jin-Chao Dong Jian-Feng Li 

机构地区：[1]State Key Laboratory of Physical Chemistry of Solid Surfaces,College of Chemistry and Chemical Engineering,College of Energy,iChEM,Xiamen University,Xiamen 361005,China [2]Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM),Xiamen 361005,China [3]Beijing National Laboratory for Molecular Sciences,CAS Research/Education Center for Excellence in Molecular Sciences,CAS Key Laboratory of Molecular Nanostructure and Nanotechnology,Institute of Chemistry,Chinese Academy of Sciences,University of Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Science China Chemistry》2023年第12期3360-3371,共12页中国科学（化学英文版）

基　　金：supported by the National Key Research and Development Program of China (2020YFB1505800);the National Natural Science Foundation of China (21925404,22005130,and 21991151);the China Postdoctoral Science Foundation (BX20220187)。

摘　　要：Benefiting from a principally contaminant-free and well-defined surface,single-crystal electrodes offer new insights into interfacial processes and are important in electrochemistry.The early impetus for using single-crystal electrodes in electrocatalysis was to investigate the surface structure at the atomic level for the reactions that are sensitive to the surface.These studies were usually performed in an ultra-high vacuum with atomic force microscopy(AFM),scanning tunneling microscope(STM),and X-ray methods to avoid the contamination.However,such characterizations are limited in their ability to identify chemical species definitively,a limitation that has similarly plagued the study of single-crystals.Recent advances in shellisolated nanoparticle-enhanced Raman spectroscopy(SHINERS)have enabled the detection of reaction intermediates on singlecrystal electrodes,in which shell-isolated nanoparticles on the single-crystal electrode can enhance the Raman signal from the surface,without changing the surface structure and electrochemical response.Thus,this work aims to review recent advances in Raman spectroelectrochemical studies on single-crystal electrode surfaces.The discussion focuses on how SHINERS technology has enabled the effective detection of intermediate species and,when combined with the electrochemical method,has yielded novel insights into the dynamic evolution of surface structure and electrocatalytic reaction mechanisms.Finally,the challenges and future of single-crystal electrodes are introduced.

关 键 词：single-crystal electrode shell-isolated nanoparticle-enhanced Raman spectroscopy interfacial structures adsorption 

分 类 号：O657.37[理学—分析化学]