期刊
NANO RESEARCH
卷 16, 期 3, 页码 3680-3686出版社
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-022-4728-1
关键词
electrochemical carbon dioxide reduction; metal-organic framework; methane; alloy; catalyst reconstruction
In this study, an atomically dispersed Co-Cu alloy catalyst with high methane Faradaic efficiency and selectivity was fabricated through the reconstruction of a metal-organic framework.
Electroreduction of carbon dioxide into value-added fuels or chemicals using renewable energy helps to effectively reduce carbon dioxide emission and alleviate the greenhouse effect while storing intermittent energies. Due to the existing infrastructure of global natural gas utilization and distribution, methane produced in such a green route attracts wide interests. However, limited success has been witnessed in the practical application of catalysts imparting satisfactory methane activity and selectivity. Herein, we report the fabrication of an atomically dispersed Co-Cu alloy through the reconstruction of trace-Co doped Cu metal-organic framework. This catalyst exhibits a methane Faradaic efficiency of 60% +/- 1% with the corresponding partial current density of 303 +/- 5 mA center dot cm(-2). Operando X-ray adsorption spectroscopy and attenuated-total-reflection surface enhanced infrared spectroscopy unravel that the introduction of atomically dispersed Co in Cu favors *CO protonation via enhancing surface water activation, and suppresses C-C coupling by reducing *CO coverage, thereby leading to high methane selectivity.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据