Synergizing Inter and Intraband Transitions in Defective Tungsten Oxide for Efficient Photocatalytic Alcohol Dehydration to Alkenes.

ABSTRACT: Photocatalysis under mild conditions is an intriguing avenue for organic chemical manufacturing to confront the serious fossil energy crisis. Herein, we report a direct light-driven alkene production through alcohol dehydration, using nonstoichiometric tungsten oxide of W₁₈O₄₉ nanowires with abundant lattice defects as a photocatalyst. A representative ethylene (C₂H₄) production rate of 275.5 mmol g_cat ^-1 h^-1 is achieved from ethanol (C₂H₅OH) dehydration, together with excellent selectivity up to 99.9%. The universality of our approach is further demonstrated with other alcohol dehydration. Combining ultrafast transient absorption spectroscopy with in situ X-ray photoelectron spectroscopy, we

SUBMITTER: Duan M 

PROVIDER: S-EPMC9131368 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature