(560bc) Non-Noble Metals Doped Bi-Nanoparticles for Electrochemical CO2 Reduction
AIChE Annual Meeting
2019
2019 AIChE Annual Meeting
Catalysis and Reaction Engineering Division
Poster Session: Catalysis and Reaction Engineering (CRE) Division
Wednesday, November 13, 2019 - 3:30pm to 5:00pm
The electrochemical reduction of CO2 by using ionic liquid (ILs) and metal nanoparticles have been attracting research efforts. Our previous work has shown that the electrochemical reduction of CO2 to CO can be realized over surface-activated bismuth nanoparticles (NPs) with 1-butyl-3-methylimidazolium ([bimi][OTf]) as the electrolyte. Particularly, by using the activated 36-nm Bi NPs on glassy carbon as the electrode, the Faradic efficiency of CO could reach 96.1%. In this work, non-noble metals (Cu, Sn) doped Bi NPs are prepared and then adopted as the cathode to achieve C2 products in MeCN/H2O electrolyte with the assistance of [bimi][OTf]. By virtue of controlling the reaction conditions, e.g., the pH of the solution, the doping concentration of the metal and reaction temperature, the optimal Cu, Sn-doped Bi NPs capable of effectively making the CO* intermediate continue to react can be obtained.