CO-assisted subsurface hydrogen trapping in Pd(111) films

Autor:	B. Santos, J. M. Puerta, Kevin F. McCarty, T. Herranz, Jorge Cerdá, J. de la Figuera
Rok vydání:	2012
Předmět:	Hydrogen Inorganic chemistry chemistry.chemical_element Antibonding molecular orbital Photochemistry chemistry.chemical_compound Adsorption chemistry Electron diffraction Desorption General Materials Science Physical and Theoretical Chemistry Absorption (chemistry) Palladium Carbon monoxide
Zdroj:	Digital.CSIC. Repositorio Institucional del CSIC instname
Popis:	We use low-energy electron microscopy to image CO displacing adsorbed H from the Pd(111) surface. Quantitative electron diffraction reveals that upon codosing atomic H and CO the latter assists the absorption of hydrogen, which ends up trapped between the first and second palladium layers, and blocks its desorption. Density functional calculations reproduce this effect, which is found to originate from the antibonding character of the interaction between the adsorbed hydrogen and the CO π states.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2847b0b815c1f822e50975a822aaffef http://hdl.handle.net/10261/71954 Zobrazit plný text záznamu