Bio-assisted Synthesis of Au/Rh Nanostructure Electrocatalysts for Hydrogen Evolution and Methanol Oxidation Reactions: Composition Matters!

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dc.contributor.authorBiswas, Rathindranath
dc.contributor.authorDastider, Saptarshi Ghosh
dc.contributor.authorAhmed, Imtiaz
dc.contributor.authorBiswas, Sayani
dc.contributor.authorMondal, Krishnakanta
dc.contributor.authorHaldar, Krishna Kanta
dc.date.accessioned2024-01-21T10:33:10Z
dc.date.accessioned2024-08-13T11:16:22Z
dc.date.available2024-01-21T10:33:10Z
dc.date.available2024-08-13T11:16:22Z
dc.date.issued2023-08-11T00:00:00
dc.description.abstractIn the field of catalysis, bimetallic nanostructures have attracted much interest. Here, we discuss the effect of Au/Rh bimetallic composition-tuned nanostructure and electrocatalytic activity. A simple bio-assisted technique was used to fabricate multiple Au:Rh nanoplate ratios (25:75, 50:50, and 75:25). XRD and XPS studies show that both Au and Rh phases coexist in a bimetallic nanostructure, and electron microscopy confirms the formation of a triangle-shaped nanoplate. Au0.25Rh0.75 exhibited the maximum catalytic activity and good stability for hydrogen evolution reaction (HER) with an overpotential of 105 mV at a current density of 10 mA/cm2. On the other hand, Au0.50Rh0.50 exhibits a higher activity for methanol oxidation reaction (MOR) compared to the other compositions. Theoretical studies indicate that the electrocatalytic enhancement obtained for both HER and MOR relies on electronic modification effects of the surface, with the overall reaction energy profile being optimized due to Au/Rh d-band mixing. � 2023 American Chemical Society.en_US
dc.identifier.doi10.1021/acs.energyfuels.3c01259
dc.identifier.issn8870624
dc.identifier.urihttp://10.2.3.109/handle/32116/3285
dc.identifier.urlhttps://pubs.acs.org/doi/10.1021/acs.energyfuels.3c01259
dc.language.isoen_USen_US
dc.publisherAmerican Chemical Societyen_US
dc.subjectBinary alloysen_US
dc.subjectCatalyst activityen_US
dc.subjectElectrocatalystsen_US
dc.subjectHydrogenen_US
dc.subjectMethanolen_US
dc.subjectSurface reactionsen_US
dc.subjectBimetallic compositionsen_US
dc.subjectBimetallic nanostructuresen_US
dc.subjectElectrocatalytic activityen_US
dc.subjectGood stabilityen_US
dc.subjectHydrogen evolution reactionsen_US
dc.subjectHydrogen-evolutionen_US
dc.subjectMethanol oxidation reactionsen_US
dc.subjectNanoplatesen_US
dc.subjectSimple++en_US
dc.subjectXRDen_US
dc.subjectNanostructuresen_US
dc.titleBio-assisted Synthesis of Au/Rh Nanostructure Electrocatalysts for Hydrogen Evolution and Methanol Oxidation Reactions: Composition Matters!en_US
dc.title.journalEnergy and Fuelsen_US
dc.typeArticleen_US
dc.type.accesstypeClosed Accessen_US

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