Oxygen Atom Transfer Reactions of Colloidal Metal Oxide Nanoparticles

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Redox transformations at metal oxide (MOx)/solution interfaces are broadly important, and oxygen atom transfer (OAT) is one of the simplest most fundamental examples such reactivity. OAT a two-electron process, well-known in gas/solid reactions catalysis. However, rarely directly observed oxide/water interfaces, whose redox typically proposed to occur one-electron steps. Reported here stoichiometric organic molecules with aqueous colloidal titanium dioxide iridium nanoparticles (TiO2 IrOx NPs). Me2SO (DMSO) oxidizes reduced TiO2 NPs formation Me2S, O atoms water-soluble phosphine thioether. The reaction stoichiometries were established chemical mechanisms probed using typical solution spectroscopic techniques, exploiting high surface areas transparency colloids. These reactions, including catalytic example, utilize ability individual accumulate many electrons and/or holes. Observing two different materials, opposite directions, step toward harnessing for valuable multi-electron multi-hole transformations.

Language: Английский

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Site heterogeneity and broad surface-binding isotherms in modern catalysis: Building intuition beyond the Sabatier principle

Journal of Catalysis, Journal Year: 2024, Volume and Issue: 439, P. 115725 - 115725

Published: Aug. 26, 2024

Language: Английский

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