Carbon dioxide adsorption and activation on ionic liquid decorated Au(111) surface: A DFT study.
Chemosphere
; 286(Pt 1): 131612, 2022 Jan.
Article
em En
| MEDLINE
| ID: mdl-34325262
ABSTRACT
We use first principle approaches to study the adsorption and catalytic activation mechanism of CO2 on ionic liquids (ILs, [CnMIm]+[Cl]- (n = 0-6)) attached to a Au(111) surface. The adsorption of CO2 at this liquid-solid model interface occurs via either (i) parallel π-stacking mode or (ii) CO2 oxygen lone pair (lp)···π interaction. These CO2 physisorption modes, which depend on the CO2 landing angle at this interface, are identified as an efficient way to activate CO2 and its further conversion into value-added products. For illustration, we discuss the conversion of CO2 into formic acid where the ILs@Au(111) decorated interface allows reduction of the activation energy for the CO2 + H2 â HCOOH reaction. In sum, our electrode/electrolyte based interface model provides valuable information to design novel heterogeneous catalysts for CO2 conversion. Indeed, our work establishes that a suitable interface material is enough to activate CO2.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Líquidos Iônicos
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article