Integrating photochemical and photothermal effects for selective oxidative coupling of methane into C₂₊ hydrocarbons with multiple active sites.

ABSTRACT: The direct photocatalytic oxidation of methane to value-added chemicals has garnered considerable interest in recent years. However, achieving high productivity while maintaining high selectivity at an appreciable methane conversion rate remains a formidable challenge. Here, we present photochemically-triggered and photothermally-enhanced oxidative coupling of methane to multi-carbon C₂₊ alkanes over an Au and CeO₂ nanoparticle-decorated ZnO photocatalyst, which exhibits a record-breaking C₂₊ production rate of 17,260 μmol g^-1 h^-1 with ~90% C₂₊ selectivity under wide-spectrum light irradiation without a secondary source of heating. Comprehensive characterizations and computational studies reveal that CH₄ activatio

SUBMITTER: Song H 

PROVIDER: S-EPMC11929825 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature