Coupling photocatalytic CO₂ reduction and CH₃OH oxidation for selective dimethoxymethane production.

ABSTRACT: Currently, conventional dimethoxymethane synthesis methods are environmentally unfriendly. Here, we report a photo-redox catalysis system to generate dimethoxymethane using a silver and tungsten co-modified blue titanium dioxide catalyst (Ag.W-BTO) by coupling CO₂ reduction and CH₃OH oxidation under mild conditions. The Ag.W-BTO structure and its electron and hole transfer are comprehensively investigated by combining advanced characterizations and theoretical studies. Strikingly, Ag.W-BTO achieve a record photocatalytic activity of 5702.49 µmol g^-1 with 92.08% dimethoxymethane selectivity in 9 h of ultraviolet-visible irradiation without sacrificial agents. Systematic isotope labeling experiments, in-situ diffuse reflectance infrared Fourier-transform anal

SUBMITTER: Wang Y 

PROVIDER: S-EPMC11258228 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature