Efficient and selective photocatalytic CH₄ conversion to CH₃OH with O₂ by controlling overoxidation on TiO₂.

ABSTRACT: The conversion of photocatalytic methane into methanol in high yield with selectivity remains a huge challenge due to unavoidable overoxidation. Here, the photocatalytic oxidation of CH₄ into CH₃OH by O₂ is carried out on Ag-decorated facet-dominated TiO₂. The {001}-dominated TiO₂ shows a durable CH₃OH yield of 4.8 mmol g^-1 h^-1 and a selectivity of approximately 80%, which represent much higher values than those reported in recent studies and are better than those obtained for {101}-dominated TiO₂. Operando Fourier transform infrared spectroscopy, electron spin resonance, and nuclear magnetic resonance techniques are used to comprehensively clarify the underlying mechanism. The straightforwar

SUBMITTER: Feng N 

PROVIDER: S-EPMC8329221 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature