Journal
CHEMSUSCHEM
Volume 9, Issue 16, Pages 2097-2102Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201600228
Keywords
Au; carbon dioxide; electrocatalyst; electroreduction; X-ray photoelectron spectroscopy
Funding
- Korea Institute of Science and Technology (KIST)
- University-Institute cooperation program of the National Research Foundation of Korea Grant - Ministry of Science, ICT and Future Planning
- Young Scientists Fellowship through the National Research Council of Science & Technology (NST) of Korea
- Ministry of Science, ICT & Future Planning, Republic of Korea [2E26560] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [특화전문대학원-02] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The formation of a nanostructure is a popular strategy for catalyst applications because it can generate new surfaces that can significantly improve the catalytic activity and durability of the catalysts. However, the increase in the surface area resulting from nanostructuring does not fully explain the substantial improvement in the catalytic properties of the CO2 electroreduction reaction, and the underlying mechanisms have not yet been fully understood. Here, based on a combination of extended X-ray absorption fine structure analysis, X-ray photoelectron spectroscopy, and Kelvin probe force microscopy, we observed a contracted Au-Au bond length and low work function with the nanostructured Au surface that had enhanced catalytic activity for electrochemical CO2 reduction. The results may improve the understanding of the enhanced stability of the nanostructured Au electrode based on the resistance of cation adhesion during the CO2 reduction reaction.
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