Carbon dioxide-enhanced photosynthesis of methane and hydrogen from carbon dioxide and water over Pt-promoted polyaniline–TiO2 nanocomposites

Abstract

The combination of polyaniline with TiO₂ significantly enhanced the photocatalytic reduction of CO₂ with H₂O owing to the increased CO₂ chemisorption and the facilitated separation of photogenerated electron–hole pairs. We discovered that CO₂ played a unique role in enhancing the electron–hole separation and the photocatalytic activity for polyaniline-containing catalysts.