Enhancement of photocatalytic activity of Bi2WO6 hybridized with graphite-like C3N4

Abstract

Bi₂WO₆ photocatalyst was hybridized by graphite-like C₃N₄via facile chemisorption. After hybridization with C₃N₄, the photocatalytic activity of Bi₂WO₆ was obviously enhanced. A C₃N₄/Bi₂WO₆ photocatalyst hybridized with monolayer C₃N₄ exhibited the highest photocatalytic activity which was 68.9% higher than that of pure Bi₂WO₆. The enhanced photocatalytic activity of the C₃N₄/Bi₂WO₆ photocatalysts could be attributed to the synergetic effect between C₃N₄ and Bi₂WO₆. The photogenerated holes on the valence band of Bi₂WO₆ could transfer to the highest occupied molecular orbital of C₃N₄via the well developed interface, causing rapid photoinduced charge separation and enhancing the photocatalytic activity.