title: Hydrogen electrocatalysis on single crystals and on nanostructured electrodes.
abstract: We investigate hydrogen evolution on plain and nanostructured electrodes with a theory developed by us. On electrodes involving transition metals the most strongly adsorbed hydrogen is often only a spectator, while the reaction proceeds via a weakly adsorbed species. For Pt(111) the isotherms for both species are calculated. We explain why a nanostructure consisting of a monolayer of Pd on Au(111) is a good catalysts, and predict that Rh/Au(111) should be even better. Our calculations for a fair number of metals are in good agreement with experiment.
authors.affiliation: Institute of Theoretical Chemistry, Ulm University, Ulm, Germany.
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Santos
authors.forename: Peter
authors.initials: P
authors.lastname: Hindelang
authors.forename: Paola
authors.initials: P
authors.lastname: Quaino
authors.forename: Eduardo N
authors.initials: EN
authors.lastname: Schulz
authors.forename: Germán
authors.initials: G
authors.lastname: Soldano
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Schmickler
mesh_terms: D000327:Adsorption; D002384:Catalysis; D004563:Electrochemistry / Q000379:methods*; D004566:Electrodes; D006046:Gold / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry*; D008956:Models, Chemical; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D010984:Platinum / Q000737:chemistry*; D013499:Surface Properties; D013816:Thermodynamics
chemical_list: D010984:Platinum; D006046:Gold; D006859:Hydrogen