Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 118, Issue -, Pages -Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2020.106789
Keywords
Electroreduction of CO2; Bimetallic catalyst; Organic catalyst; Heterogeneous catalyst; Methanol
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Funding
- National Natural Science Foundation of China [21572070]
- National Key Research and Development Program of China [2016YFA0602900]
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By using electrochemical oxidation and electrodeposition methods, 4-aminopyridine (Py) and bimetallic Sn-Zn were successfully immobilized on the surface of pure carbon paper to construct a composite heterogeneous catalyst (C-Py-Sn-Zn), which could effectively catalyse electrochemical reduction of CO2 to selectively form CH3OH. The experimental results reveal that the synergic effect between Sn and Zn as well as bimetallic Sn-Zn and organic catalyst Py plays a very important role in catalyzing CO2 electroreduction. With C-Py-Sn-Zn electrocatalyst, the maximum Faradaic efficiency of CH3OH formation could reach 59.9% at the potential -0.5 V vs. RHE, and the catalytic activity could maintain stability during a 26-hour-electrolysis period.
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