摘要
Electrochemical reduction of CO_2 to CO is an interesting topic. In this work, we prepared metal-free electrodes by depositing graphene oxide(GO), multi-walled carbon nanotube(MWCNT), and GO/MWCNT composites on carbon paper(CP) using electrophoretic deposition(EPD) method. The electrodes were characterized by different methods, such as X-ray diffraction(XRD) and X-ray photoelectron spectroscopy(XPS). The electrochemical reduction of CO_2 to CO was conducted on the electrodes in 1-butyl-3-methylimidazolium tetrafluoroborate([Bmim]BF4)/acetonitrile(Me CN) electrolyte, and the composition of the electrolyte influenced the reaction significantly. It was demonstrated that GO/MWCNT-CP electrode was very effective for the reaction in IL(90 wt%)/Me CN binary mixture, the Faradaic efficiency of CO and current density were even higher than those on Au and Ag electrodes in the same electrolyte.
Electrochemical reduction of CO2 to CO is an interesting topic. In this work, we prepared metal-free electrodes by depositing graphene oxide （GO）, multi-walled carbon nanotube （MWCNT）, and GO/MWCNT composites on carbon paper （CP） using electrophoretic deposition （EPD） method. The electrodes were characterized by different methods, such as X-ray diffraction （XRD） and X-ray photoelectron spectroscopy （XPS）. The electrochemical reduction of CO2 to CO was conducted on the elec- trodes in 1-butyl-3-methylimidazolium tetrafluoroborate （[Bmim]BF4）/acetonitrile （MeCN） electrolyte, and the composition of the electrolyte influenced the reaction significantly. It was demonstrated that GO/MWCNT-CP electrode was very effective for the reaction in IL （90 wt%）/MeCN binary mixture, the Faradaic efficiency of CO and current density were even higher than those on Au and Ag electrodes in the same electrolyte.
基金
supported by the National Natural Science Foundation of China (21403253, 21533011)
