典型文献
Operando HERFD-XANES and surface sensitive △μ analyses identify the structural evolution of copper(Ⅱ) phthalocyanine for electroreduction of CO2
文献摘要：
The quantitative understanding of how atomic-level catalyst structural changes affect the reactivity of the electrochemical CO2 reduction reaction is challenging.Due to the complexity of catalytic systems,conventional in situ X-ray spectroscopy plays a limited role in tracing the underlying dynamic structural changes in catalysts active sites.Herein,operando high-energy resolution fluorescence-detected X-ray absorption spectroscopy was used to precisely identify the dynamic structural transformation of well-defined active sites of a representative model copper(Ⅱ) phthalocyanine catalyst which is of guiding sig-nificance in studying single-atom catalysis system.Comprehensive X-ray spectroscopy analyses,includ-ing surface sensitive Δμ spectra which isolates the surface changes by subtracting the disturb of bulk base and X-ray absorption near-edge structure spectroscopy simulation,were used to discover that Cu species aggregated with increasing applied potential,which is responsible for the observed evolution of C2H4.The approach developed in this work,characterizing the active-site geometry and dynamic struc-tural change,is a novel and powerful technique to elucidate complex catalytic mechanisms and is expected to contribute to the rational design of highly effective catalysts.
文献关键词：
中图分类号：
作者姓名：
Bingbao Mei;Cong Liu;Ji Li;Songqi Gu;Xianlong Du;Siyu Lu;Fei Song;Weilin Xu;Zheng Jiang
作者机构：
Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201204,China;University of Chinese Academy of Sciences,Beijing 100049,China;State Key Laboratory of Electroanalytical Chemistry,& Jilin Province Key Laboratory of Low Carbon Chemical Power,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,Jilin,China;Shanghai Synchrotron Radiation Facility,Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201204,China;College of Chemistry,College of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450000,Henan,China;Innovation Academy for Green Manufacture,Chinese Academy of Sciences,Beijing 100190,China
文献出处：
引用格式：
[1]Bingbao Mei;Cong Liu;Ji Li;Songqi Gu;Xianlong Du;Siyu Lu;Fei Song;Weilin Xu;Zheng Jiang-.Operando HERFD-XANES and surface sensitive △μ analyses identify the structural evolution of copper(Ⅱ) phthalocyanine for electroreduction of CO2)[J].能源化学,2022(01):1-7
A类：
HERFD
B类：
Operando,XANES,surface,sensitive,analyses,identify,structural,evolution,copper,phthalocyanine,electroreduction,quantitative,understanding,how,atomic,level,changes,affect,reactivity,electrochemical,reaction,challenging,Due,complexity,catalytic,systems,conventional,situ,ray,spectroscopy,plays,limited,role,tracing,underlying,dynamic,catalysts,active,sites,Herein,operando,energy,resolution,fluorescence,detected,absorption,was,used,precisely,transformation,well,defined,representative,model,which,guiding,nificance,studying,single,catalysis,Comprehensive,includ,spectra,isolates,by,subtracting,disturb,bulk,base,near,edge,structure,simulation,were,discover,that,species,aggregated,increasing,applied,potential,responsible,observed,C2H4,approach,developed,this,work,characterizing,geometry,novel,powerful,technique,elucidate,mechanisms,expected,contribute,rational,design,highly,effective
AB值：
0.605624
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