TY - JOUR
T1 - Improving CO2 Electrochemical Reduction to CO Using Space Confinement between Gold or Silver Nanoparticles
AU - Chang, Kuan
AU - Jian, Xianfeng
AU - Jeong, Hyung Mo
AU - Kwon, Youngkook
AU - Lu, Qi
AU - Cheng, Mu Jeng
N1 - Funding Information:
We gratefully acknowledge the financial support of the National Natural Science Foundation of China (51761145048, 61725401, 51702107, 11674237, and 51602211) and the Major State Basic Research Development Program of China (2016YFB0700702). We thank the Analytical and Testing Center of HUST and the facility support of the Center for Nanoscale Characterization and Devices, WNLO.
Publisher Copyright:
© 2020 American Chemical Society.
PY - 2020/3/5
Y1 - 2020/3/5
N2 - Developing electrocatalysts that are stable and efficient for CO2 reduction is important for constructing a carbon-neutral energy cycle. New approaches are required to drive input electricity toward the desired CO2 reduction reaction (CO2RR) rather than the competitive hydrogen evolution reaction (HER). In this study, we have used quantum mechanics to demonstrate that the space confinement formed in the gaps of adjacent gold or silver nanoparticles can be used to improve the Faradaic efficiency of CO2RR to CO. This behavior is due to the space confinement stabilizing*COOH, which is the key intermediate in the CO2RR. However, space confinement has almost no effect on*H, which is the key intermediate in the HER. Possible experimental approaches for the preparation of this type of gold or silver electrocatalyst have been proposed.
AB - Developing electrocatalysts that are stable and efficient for CO2 reduction is important for constructing a carbon-neutral energy cycle. New approaches are required to drive input electricity toward the desired CO2 reduction reaction (CO2RR) rather than the competitive hydrogen evolution reaction (HER). In this study, we have used quantum mechanics to demonstrate that the space confinement formed in the gaps of adjacent gold or silver nanoparticles can be used to improve the Faradaic efficiency of CO2RR to CO. This behavior is due to the space confinement stabilizing*COOH, which is the key intermediate in the CO2RR. However, space confinement has almost no effect on*H, which is the key intermediate in the HER. Possible experimental approaches for the preparation of this type of gold or silver electrocatalyst have been proposed.
UR - http://www.scopus.com/inward/record.url?scp=85080907047&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85080907047&partnerID=8YFLogxK
U2 - 10.1021/acs.jpclett.0c00082
DO - 10.1021/acs.jpclett.0c00082
M3 - Article
C2 - 32069406
AN - SCOPUS:85080907047
SN - 1948-7185
VL - 11
SP - 1896
EP - 1902
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
IS - 5
ER -