基于电镜中心(EMC)FEI电镜数据,深圳大学化学与环境工程学院用户在JCR1区期刊Journal of the American Chemical Societys上发表论文,摘要如下:
Scalable Production of Efficient Single-Atom Copper Decorated
Carbon Membranes for CO2 Electroreduction to Methanol
Hengpan Yang,†,§ Yu Wu,‡,§ Guodong Li,‡ Qing Lin,† Qi Hu,† Qianling Zhang,† Jianhong Liu,†
and Chuanxin He*
†
Shenzhen Key Laboratory for Functional Polymer, College of Chemistry and Environmental Engineering, Shenzhen University,
Shenzhen, Guangdong 518060, China
‡
Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and
Technology of China, Hefei, Anhui 230026, China
Electrocatalytic reduction reaction of CO2 (CO2RR) is an
effective way to mitigate energy and environmental issues. However, very
limited catalysts are capable of converting CO2 resources into high-value
products such as hydrocarbons or alcohols. Herein, we first propose a facile
strategy for the large-scale synthesis of isolated Cu decorated through-hole
carbon nanofibers (CuSAs/TCNFs). This CuSAs/TCNFs membrane has
excellent mechanical properties and can be directly used as cathode for CO2RR,
which could generate nearly pure methanol with 44% Faradaic efficiency in
liquid phase. The self-supporting and through-hole structure of CuSAs/TCNFs
greatly reduces the embedded metal atoms and produces abundant efficient Cu
single atoms, which could actually participate in CO2RR, eventually causing
−93 mA cm−2 partial current density for C1 products and more than 50 h
stability in aqueous solution. According to DFT calculations, Cu single atoms
possess a relatively higher binding energy for *CO intermediate. Therefore,
*CO could be further reduced to products like methanol, instead of being easily released from the catalyst surface as CO
product. This report may benefit the design of efficient and high-yield single-atom catalysts for other electrocatalytic reactions.

