Optimizing the reaction pathway of methane photo-oxidation over single copper sites.

ABSTRACT: Direct photocatalytic conversion of methane to value-added C₁ oxygenate with O₂ is of great interest but presents a significant challenge in achieving highly selective product formation. Herein, a general strategy for the construction of copper single-atom catalysts with a well-defined coordination microenvironment is developed on the basis of metal-organic framework for selective photo-oxidation of CH₄ to HCHO. We propose the directional activation of O₂ on the mono-copper site breaks the original equilibrium and tilts the balance of radical formation almost completely toward •OOH. The synchronously generated •OOH and •CH₃ radicals rapidly combine to form HCHO while inhibiting competing reactions, thus resulting in ultra-highly select

SUBMITTER: Feng C 

PROVIDER: S-EPMC11494074 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature