Hydrogen adsorption study on nanostructured Ag-Rh films grown by supersonic cluster beam deposition

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dc.contributor.authorVega, F.
dc.contributor.authorFernandez, J.
dc.contributor.authorElgueta, S.
dc.contributor.authorCavaliere, Emanuele
dc.contributor.authorGavioli, Luca
dc.contributor.authorCabrera, A. L.
dc.date.accessioned2025-01-20T20:11:22Z
dc.date.available2025-01-20T20:11:22Z
dc.date.issued2023
dc.description.abstractFollowing recent literature work, an interesting result on hydrogen sorption by Ag-Rh clusters was reported which do not follow the common understanding of hydrogen ab-sorption in bulk alloys. Thus, nanostructured Ag-Rh films with a composition of 75% Ag-25% Rh were grown by supersonic cluster beam deposition onto microbalance quartz crystals in order to measure hydrogen absorption. The films were exposed to H-2 gas to study hydrogen absorption at different partial pressure. The Ag-Rh films were then characterized by XPS and AFM. The Ag/Rh atomic ratio was found to be 75/25 by XPS. Surface roughness was determined by AFM to be 3 nm RMS in all the films. In disagreement with the quoted literature report, no hydrogen absorption was observed in our Ag-Rh films up to 5:3 x 10(3)Pa of hydrogen pressure. The response of the balance was checked and validated by measuring hydrogen absorption on 10 and 100 nm Pd films. The hydrogen absorption by Pd yielded an atomic H/Pd ratio of similar to 0.65 in agreement with our prior measurements.(c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.ijhydene.2023.01.225
dc.identifier.eissn1879-3487
dc.identifier.issn0360-3199
dc.identifier.urihttps://doi.org/10.1016/j.ijhydene.2023.01.225
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/92140
dc.identifier.wosidWOS:000998845100001
dc.issue.numero45
dc.language.isoen
dc.pagina.final17236
dc.pagina.inicio17230
dc.revistaInternational journal of hydrogen energy
dc.rightsacceso restringido
dc.titleHydrogen adsorption study on nanostructured Ag-Rh films grown by supersonic cluster beam deposition
dc.typeartículo
dc.volumen48
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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