Highly efficient, selective, and stable photocatalytic methane coupling to ethane enabled by lattice oxygen looping.

ABSTRACT: Light-driven oxidative coupling of methane (OCM) for multi-carbon (C₂₊) product evolution is a promising approach toward the sustainable production of value-added chemicals, yet remains challenging due to its low intrinsic activity. Here, we demonstrate the integration of bismuth oxide (BiO_x) and gold (Au) on titanium dioxide (TiO₂) substrate to achieve a high conversion rate, product selectivity, and catalytic durability toward photocatalytic OCM through rational catalytic site engineering. Mechanistic investigations reveal that the lattice oxygen in BiO_x is effectively activated as the localized oxidant to promote methane dissociation, while Au governs the methyl transfer to avoid undesirable overoxidation and promote carbon─carbon coupling. Th

SUBMITTER: Zhai G 

PROVIDER: S-EPMC11637002 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature