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Morphology‐Controlled Bi 2 O 3 Nanoparticles as Catalysts for Selective Electrochemical Reduction of CO 2 to Formate
Author(s) -
Miao CanCan,
Yuan GaoQing
Publication year - 2018
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201801036
Subject(s) - nanorod , formate , catalysis , nanoparticle , electrolysis , faraday efficiency , materials science , electrochemistry , aqueous solution , chemical engineering , electrocatalyst , nanotechnology , inorganic chemistry , chemistry , electrode , organic chemistry , engineering , electrolyte
In this paper, Bi 2 O 3 electrocatalysts for the electroreduction of CO 2 to formate were synthesized with different morphologies, including nanoparticles and thin nanorods. Comparatively, Bi 2 O 3 nanoparticles have higher catalytic activity than Bi 2 O 3 thin nanorods. The Faradaic efficiency of formate formation at a moderate potential of −1.2 vs. RHE in aqueous solution could reach 91 %. In addition, a maximum current density for formate production of up to 22 mA cm −2 was achieved, which is almost 3 times higher than that of Bi 2 O 3 thin nanorods. In particular, the catalytic activity of the Bi 2 O 3 nanoparticle catalyst was almost stable over a 23‐hour period of electrolysis, exhibiting its application prospect in the electroreduction of CO 2 to formate.