2024-05-21 アルゴンヌ国立研究所(ANL)
＜関連情報＞
- https://www.anl.gov/article/recycling-carbon-dioxide-into-household-chemicals
- https://pubs.acs.org/doi/10.1021/jacs.3c12722
CO2電極触媒の有機物経路への変換を触媒サイト次元で調節する Modulating CO2 Electrocatalytic Conversion to the Organics Pathway by the Catalytic Site Dimension
Haiping Xu, Jianxin Wang, Haiying He, Inhui Hwang, Yuzi Liu, Chengjun Sun, Haozhe Zhang, Tao Li, John V. Muntean, Tao Xu, and Di-Jia Liu
Journal of the American Chemical Society Published:April 4, 2024
DOI:https://doi.org/10.1021/jacs.3c12722
Abstract
Electrochemical reduction of carbon dioxide to organic chemicals provides a value-added route for mitigating greenhouse gas emissions. We report a family of carbon-supported Sn electrocatalysts with the tin size varying from single atom, ultrasmall clusters to nanocrystallites. High single-product Faradaic efficiency (FE) and low onset potential of CO2 conversion to acetate (FE = 90% @ −0.6 V), ethanol (FE = 92% @ −0.4 V), and formate (FE = 91% @ −0.6 V) were achieved over the catalysts of different active site dimensions. The CO2 conversion mechanism behind these highly selective, size-modulated p-block element catalysts was elucidated by structural characterization and computational modeling, together with kinetic isotope effect investigation.
