Marrying plasmonic earth-abundant metals with catalytic metals for visible-light-promoted hydrogen generation on biobased materials

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dc.contributor.authorRamirez, Oscar
dc.contributor.authorCastillo, Sebastian
dc.contributor.authorBonardd, Sebastian
dc.contributor.authorSaldias, Cesar
dc.contributor.authorO'Shea, James N.
dc.contributor.authorClive, Christopher Philip
dc.contributor.authorDiaz, David Diaz
dc.contributor.authorLeiva, Angel
dc.date.accessioned2025-01-20T17:27:35Z
dc.date.available2025-01-20T17:27:35Z
dc.date.issued2023
dc.description.abstractBimetallic CuPt alloyed nanoparticles were conveniently synthesized on biohydrogels and were capable of carrying out hydrogen release from ammonium borane hydrolysis. The biohydrogel consisted of bead-shaped alginate chains crosslinked by calcium ions, which were used as support material to synthesize and stabilize the bimetallic nanoparticles, employing adsorption and coreduction strategy steps. The as-prepared nanoparticles exhibited light absorption in the visible range (580 nm) resulting from the surface plasmon resonance (SPR) phenomenon ascribed to the presence of copper in the alloyed system. On the other hand, the presence of platinum atoms in these nanoalloys endows them with a notable catalytic performance toward ammonia borane hydrolysis as a hydrogen release reaction, reaching kr values from 0.32 x 10-4 to 2.23 x 10-4 mol L-1 min-1 as the Pt content increases. Finally, by taking advantage of the SPR light absorption shown by CuPt 1:1, it was demonstrated that these entities could be successfully employed as photocatalysts for the hydrogen generation reaction, boosting its activity by almost 2.06 times compared to its performance in dark conditions. This catalytic enhancement was mainly ascribed to the light-harvesting properties promoted by plasmonic effects and the specimen's metallic composition.
dc.description.funderEusko Jaurlaritza
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.jece.2023.111036
dc.identifier.eissn2213-3437
dc.identifier.issn2213-2929
dc.identifier.urihttps://doi.org/10.1016/j.jece.2023.111036
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/91572
dc.identifier.wosidWOS:001088971800001
dc.issue.numero5
dc.language.isoen
dc.revistaJournal of environmental chemical engineering
dc.rightsacceso restringido
dc.subjectHydrogel nanocomposites
dc.subjectNanoalloys
dc.subjectHydrogen generation
dc.subjectPlasmonic enhancement
dc.subject.ods07 Affordable and Clean Energy
dc.subject.odspa07 Energía asequible y no contaminante
dc.titleMarrying plasmonic earth-abundant metals with catalytic metals for visible-light-promoted hydrogen generation on biobased materials
dc.typeartículo
dc.volumen11
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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