Enriching surface-ordered defects on WO₃ for photocatalytic CO₂-to-CH₄ conversion by water.

ABSTRACT: Defect engineering has been widely applied in semiconductors to improve photocatalytic properties by altering the surface structures. This study is about the transformation of inactive WO₃ nanosheets to a highly effective CO₂-to-CH₄ conversion photocatalyst by introducing surface-ordered defects in abundance. The nonstoichiometric WO_3-x samples were examined by using aberration-corrected electron microscopy. Results unveil abundant surface-ordered terminations derived from the periodic {013} stacking faults with a defect density of 20.2%. The {002} surface-ordered line defects are the active sites for fixation CO₂, transforming the inactive WO₃ nanosheets into a highly active catalyst (CH₄: O₂ =

SUBMITTER: Xue S 

PROVIDER: S-EPMC11066983 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature