biostudies-literatureShun KJapan Society for the Promotion of Science8137-8147https://www.ebi.ac.uk/biostudies/studies/S-EPMC9278487biostudies-literatureUnknown13(27)Hydrogen spillover, the migration of dissociated hydrogen atoms from noble metals to their support materials, is a ubiquitous phenomenon and is widely utilized in heterogeneous catalysis and hydrogen storage materials. However, in-depth understanding of the migration of spilled hydrogen over different types of supports is still lacking. Herein, hydrogen spillover in typical reducible metal oxides, such as TiO₂, CeO₂, and WO₃, was elucidated by combining systematic characterization methods involving various <i>in situ</i> techniques, kinetic analysis, and density functional theory calculations. TiO₂ and CeO₂ were proven to be promising platforms for the synthesis of non-equilibrium RuNi binary solid solution alloy nanoparticles displayiChemical scienceRevealing hydrogen spillover pathways in reducible metal oxides.PMC927848721B206JPMXP0112101003Yamashita HMori KMasuda SHashimoto NShun KKobayashi HHinuma YfalseRevealing hydrogen spillover pathways in reducible metal oxides.Hydrogen spillover, the migration of dissociated hydrogen atoms from noble metals to their support materials, is a ubiquitous phenomenon and is widely utilized in heterogeneous catalysis and hydrogen storage materials. However, in-depth understanding of the migration of spilled hydrogen over different types of supports is still lacking. Herein, hydrogen spillover in typical reducible metal oxides, such as TiO₂, CeO₂, and WO₃, was elucidated by combining systematic characterization methods involving various <i>in situ</i> techniques, kinetic analysis, and density functional theory calculations. TiO₂ and CeO₂ were proven to be promising platforms for the synthesis of non-equilibrium RuNi binary solid solution alloy nanoparticles displayi2022-01-01T00:00:00Z2022 Jul2025-04-26T16:19:46.114Z2025-04-06T15:08:46.73ZS-EPMC92784873591943010.1039/d2sc00871h