Abstract
AbstractElectroreduction of CO2 to CO is attractive target to store energy from intermittent sources, as it requires the transfer of only two electrons and two protons. Metal‐based catalysts (Au, Ag, Ni, Fe, etc.), especially metal‐ and N‐co‐doped carbon materials have been proven to show high selectivity for CO production. However, for Zn‐based catalysts, the critical active site is still intensely debated. Herein, we synthesize a series of carbon nanotube‐supported Zn‐based catalysts with a tunable ratio of isolated ZnNx sites and Zn‐based nanoparticles. We identify ZnNx moieties anchored on the surface of carbon nanotubes are catalytically highly active for the selective CO2 electroreduction to CO, with the Faradaic efficiency (FE) as high as 97.3 %. In contrast, N‐doped carbon nanotubes (NCNTs) and Zn‐containing nanoparticles supported on NCNTs exhibit inferior selectivity with the CO FEs of 56.7 % and 72.9 %, respectively, suggesting that Zn doping in carbon and the existing forms are of significant importance for improving the ability of Zn‐based catalysts for electrocatalytic reduction of CO2.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
