Hydrogen electrocatalysis on overlayers of rhodium over gold and palladium substrates--more active than platinum?
Phys Chem Chem Phys
; 13(36): 16437-43, 2011 Sep 28.
Article
em En
| MEDLINE
| ID: mdl-21847482
ABSTRACT
We have investigated the stability and catalytic activity of epitaxial overlayers of rhodium on Au(111) and Pd(111). Both surfaces show a strong affinity for hydrogen. We have calculated the energy of adsorption both for a strongly and a more weakly adsorbed species; the latter is the intermediate in the hydrogen evolution reaction. Both the energy of activation for hydrogen adsorption (Volmer reaction) and hydrogen recombination (Tafel reaction) are very low, suggesting that these overlayers are excellent catalysts.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Phys Chem Chem Phys
Assunto da revista:
BIOFISICA
/
QUIMICA
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Alemanha