H2O-assisted O2 reduction by H2 on Pt and PtAu bimetallic nanoparticles: Influences of composition and reactant coverages on kinetic regimes, rates, and selectivities

Tomas Ricciardulli,Jason S. Adams, Marco DeRidder,Alexander P. van Bavel,Ayman M. Karim,David W. Flaherty

Journal of Catalysis（2021）

引用 9|浏览4

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摘要

•PtAu alloys can exhibit significantly higher H2O2 selectivity than Pt.•Single-atoms of Pt in Au are highly selective direct H2O2 synthesis sites.•Products form by proton-electron transfer on Pt and PtAu.•Reaction conditions may agglomerate Pt single-atoms to oligomers.

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关键词

Single atom alloys,Hydrogen peroxide synthesis,Oxygen reduction,Infrared spectroscopy,X-ray absorption spectroscopy

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