ArticleACS applied materials & interfaces2024
Impact of Catalysis-Relevant Oxidation and Annealing Treatments on Nanostructured GaRh Alloys.
Article in ACS applied materials & interfaces, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Surface properties of Ga-Cu based liquid-metal alloys: impact of Cu dilution, topography, and alloy liquefaction.RSC applied interfaces · 2026Article
- Reductive Treatment of Ga-Pt-Supported Catalytically Active Liquid Metal Solutions (SCALMS) for Propane Dehydrogenation.ACS catalysis · 2025Article
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5 authors.
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Abstract
In this study, we examine the surface-derived electronic and chemical structures of nanostructured GaRh alloys as a model system for supported catalytically active liquid metal solutions (SCALMS), a novel catalyst candidate for dehydrogenation reactions that are important for the petrochemical and hydrogen energy industry. It is reported that under ambient conditions, SCALMS tends to form a gallium oxide shell, which can be removed by an activation treatment at elevated temperatures and hydrogen flow to enhance the catalytic reactivity. We prepared a 7 at. % Rh containing the GaRh sample and interrogated the evolution of the surface chemical and electronic structure by photoelectron spectroscopy (complemented by scanning electron microscopy) upon performing surface oxidation and (activation treatment mimicking) annealing treatments in ultrahigh vacuum conditions. The initially pronounced Rh 4d and Fermi level-derived states in the valence band spectra disappear upon oxidation (due to formation of a GaO
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