Enhanced oxygen reduction activity of size-selected platinum subnanocluster catalysts: Pt<sub><i>n</i></sub> (<i>n</i> = 3–9)
Akira Ohnuma, Koki Takahashi, Hironori Tsunoyama, Tomoya Inoue, Pei Zhao, Archana Velloth, Masahiro Ehara, Nobuyuki Ichikuni, Masao Tabuchi, Atsushi Nakajima
Abstract
Pt n subnanoclusters ( n = 3–9) on a carbon substrate exhibit 1.6–2.2 times higher activity than the standard Pt/C catalysts. EXAFS experiments and DFT calculations show plausible structures and energetics for reaction intermediates in the processes.
Topics & Concepts
CatalysisPlatinumExtended X-ray absorption fine structureOxygen reduction reactionChemistryOxygen reductionSubstrate (aquarium)OxygenDensity functional theoryEnergeticsInorganic chemistryPhysical chemistryComputational chemistryThermodynamicsElectrochemistryOrganic chemistryPhysicsAbsorption spectroscopyQuantum mechanicsOceanographyGeologyElectrodeElectrocatalysts for Energy ConversionCatalytic Processes in Materials ScienceCatalysis and Hydrodesulfurization Studies