Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 2097-2102 |
| Number of pages | 6 |
| Journal | ChemSusChem |
| Volume | 9 |
| Issue number | 16 |
| DOIs | |
| Publication status | Published - 2016 |
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Keywords
- Au
- carbon dioxide
- electrocatalyst
- electroreduction
- X-ray photoelectron spectroscopy
ASJC Scopus subject areas
- Environmental Chemistry
- Chemical Engineering(all)
- Materials Science(all)
- Energy(all)
Cite this
Contributors to Enhanced CO2 Electroreduction Activity and Stability in a Nanostructured Au Electrocatalyst. / Kim, Haeri; Jeon, Hyo Sang; Jee, Michael Shincheon; Nursanto, Eduardus Budi; Singh, Jitendra Pal; Chae, Keunhwa; Hwang, Yun Jeong; Min, Byoung Koun.
In: ChemSusChem, Vol. 9, No. 16, 2016, p. 2097-2102.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Contributors to Enhanced CO2 Electroreduction Activity and Stability in a Nanostructured Au Electrocatalyst
AU - Kim, Haeri
AU - Jeon, Hyo Sang
AU - Jee, Michael Shincheon
AU - Nursanto, Eduardus Budi
AU - Singh, Jitendra Pal
AU - Chae, Keunhwa
AU - Hwang, Yun Jeong
AU - Min, Byoung Koun
PY - 2016
Y1 - 2016
N2 - 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.
AB - 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.
KW - Au
KW - carbon dioxide
KW - electrocatalyst
KW - electroreduction
KW - X-ray photoelectron spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=84987790562&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84987790562&partnerID=8YFLogxK
U2 - 10.1002/cssc.201600228
DO - 10.1002/cssc.201600228
M3 - Article
C2 - 27466025
AN - SCOPUS:84979713903
VL - 9
SP - 2097
EP - 2102
JO - ChemSusChem
JF - ChemSusChem
SN - 1864-5631
IS - 16
ER -