Keggin heteropolyacid supported on C۳N۴ as catalyst for selective oxidation of sulfides

H۳PW۱۲O۴۰ (PW۱۲), the Keggin heteropolyacid (HPA) has been supported on carbon nitride (C۳N۴). The supported PW۱۲ was used in the photocatalytic oxidation of sulfides. PW۱۲/g-C۳N۴ depicts more efficient and higher photocatalytic capability in the oxidation of sulfides under visible light irradiation compared with Keggin. The acidity of the HPA cluster accounts for the catalytic role, whereas both the acidity and the redox properties of the HPA species were responsible for the increase of the reaction rate in the photo-assisted catalytic reaction.

Keywords:

Keggin , C۳N۴ , oxidation , sulfide.