Multi-shelled CuO microboxes for carbon dioxide reduction to ethylene  

作　　者：Dongxing Tan Jianling Zhang Lei Yao Xiuniang Tan Xiuyan Cheng Qiang Wan Buxing Han Lirong Zheng Jing Zhang 

机构地区：[1]Beijing National Laboratory for Molecular Sciences,CAS Key Laboratory of Colloid,Interface and Chemical Thermodynamics,CAS Research/Education Center for Excellence in Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences,Beijing,100190,China [2]School of Chemical Sciences,University of Chinese Academy of Sciences,Beijing,100049,China [3]Physical Science Laboratory,Huairou National Comprehensive Science Center,Beijing,101400,China [4]Beijng Synchrotron Radiation Facility(BSRF),Institute of High Energy Physics,Chinese Academy of Sciences,Beijing,100049,China

出　　处：《Nano Research》2020年第3期768-774,共7页纳米研究（英文版）

基　　金：supports from Ministry of Science and Technology of China(No.2017YFA0403003);the National Natural Science Foundation of China(Nos.21525316 and 21673254);Chinese Academy of Sciences(No.QYZDY-SSW-SLH013);Beijing Municipal Science&Technology Commission(No.Z191100007219009).

摘　　要：The electroreduction of CO2 to valuable chemicals and fuels offers an effective mean for energy storage.Although CO2 has been efficiently converted into C1 products(e.g.,carbon monoxide,formic acid,methane and methanol),its convention into high value-added multicarbon hydrocarbons with high selectivity and activity still remains challenging.Here we demonstrate the formation of multi-shelled CuO microboxes for the efficient and selective electrocatalytic CO2 reduction to C2H4.Such a structure favors the accessibility of catalytically active sites,improves adsorption of reaction intermediate(CO),inhibits the diffusion of produced OH−and promotes C-C coupling reaction.Owing to these unique advantages,the multi-shelled CuO microboxes can effectively convert CO2 into C2H4 with a maximum faradaic efficiency of 51.3%in 0.1 M K2SO4.This work provides an effective way to improve CO2 reduction efficiency via constructing micro-and nanostructures of electrocatalysts.

关 键 词：multi-shelled CuO microboxes NANOCRYSTALS CO2 reduction C2H4 

分 类 号：O64[理学—物理化学]