Exclusive Formation of Formic Acid from CO2 Electroreduction by a Tunable Pd-Sn Alloy.
Angew Chem Int Ed Engl
; 56(40): 12219-12223, 2017 09 25.
Article
em En
| MEDLINE
| ID: mdl-28741847
ABSTRACT
Conversion of carbon dioxide (CO2 ) into fuels and chemicals by electroreduction has attracted significant interest, although it suffers from a large overpotential and low selectivity. A Pd-Sn alloy electrocatalyst was developed for the exclusive conversion of CO2 into formic acid in an aqueous solution. This catalyst showed a nearly perfect faradaic efficiency toward formic acid formation at the very low overpotential of -0.26â
V, where both CO formation and hydrogen evolution were completely suppressed. Density functional theory (DFT) calculations suggested that the formation of the key reaction intermediate HCOO* as well as the product formic acid was the most favorable over the Pd-Sn alloy catalyst surface with an atomic composition of PdSnO2 , consistent with experiments.
Texto completo:
1
Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article