Atomically Dispersed Nickel Anchored on a Nitrogen-Doped Carbon/TiO₂ Composite for Efficient and Selective Photocatalytic CH₄ Oxidation to Oxygenates.

ABSTRACT: Direct photocatalytic oxidation of methane to liquid oxygenated products is a sustainable strategy for methane valorization at room temperature. However, in this reaction, noble metals are generally needed to function as cocatalysts for obtaining adequate activity and selectivity. Here, we report atomically dispersed nickel anchored on a nitrogen-doped carbon/TiO₂ composite (Ni-NC/TiO₂ ) as a highly active and selective catalyst for photooxidation of CH₄ to C1 oxygenates with O₂ as the only oxidant. Ni-NC/TiO₂ exhibits a yield of C1 oxygenates of 198 μmol for 4 h with a selectivity of 93 %, exceeding that of most reported high-performance photocatalysts. Experimental and theoretical investigations suggest that the single-atom Ni-NC sit

SUBMITTER: Song H 

PROVIDER: S-EPMC10107830 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature