文献类型：期刊文献

英文题名：Cu nanosheets with exposed (111) crystal facets for highly efficient electrocatalytic CO₂ reduction reaction toward methanol production

作者：Chen, Yuyuan[1];Huang, Yachang[1];Hu, Xia[2];Lin, Sijie[1];Ma, De-Kun[1]

机构：[1]Shaoxing Univ, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Peoples R China;[2]Shaoxing Univ, Sch Life & Environm Sci, Shaoxing 312000, Peoples R China

年份：2024

外文期刊名：CRYSTENGCOMM

收录：SCI-EXPANDED(收录号：WOS:001360721300001)、、EI(收录号：20244817434850)、Scopus(收录号：2-s2.0-85210039796)、WOS

基金：This work was supported by the National Natural Science Foundation of China (No. 52371196 and 21673160) and the startup funds of Shaoxing University.

语种：英文

外文摘要：The exposed crystal facets of Cu have a profound effect on its electrocatalytic CO2 reduction reaction (CO2RR) activity and product selectivity. On the other hand, at present, most of the studies on Cu-based electrocatalysts for the CO2RR focus on the synthesis of C2+ products. There are only a few reports involving methanol (CH3OH) generation over Cu nanocrystals. Herein, CuO nanosheets (NSs) and nanorods (NRs) were synthesized through a controlled oxidation and dehydration route under mild reaction conditions, using Cu mesh as a Cu source and conductive substrate, respectively. The as-synthesized CuO NSs and NRs were further converted into Cu NSs and NRs through an in situ electrochemical reduction method, respectively. The experimental results showed that CH3OH could be efficiently produced over Cu NSs with abundant (111) crystal facets through the electrocatalytic CO2RR. The maximum CH3OH faradaic efficiency (FE) obtained on Cu NSs is 68% at a relatively low applied potential of -0.6 V vs. reversible hydrogen electrode (RHE), which is 1.6 times larger than that achieved on Cu NRs with primarily exposed (200) crystal facets (42%). The crystal facet-dependent electrocatalytic CO2RR activity toward CH3OH production was elucidated based on theoretical calculations combined with experimental results.