g-C3N4/H3PW4Mo8O40 S-scheme photocatalyst with enhanced photocatalytic oxidation of alcohols and sulfides

In this work, graphitic carbon nitride (g-C3N4) decorated with molybdenum-substituted tungstophosphoric acid as a novel photocatalyst (H3PW4Mo8O40/g-C3N4) was used to catalyze the oxidation of alcohols and sulfides. H3PW4Mo8O40/g-C3N4 (RW4MO8/g-C3N4) displays higher photocatalytic activity under visible light irradiation for the oxidation of alcohols and sulfides compared with Keggin/g-C3N4 (PW12/g-C3N4). To obtain the optimum value, molybdenum substitution contents (H3PW12-xMoxO40) were changed from x = 4 to 12. The results showed that PW4Mo8 produces the best yield under visible-light irradiation. The results showed that PW4Mo8 was the best sample. The reaction rate increase can be due to the redox and acid properties of PW4Mo8/g-C3N4. This study provides a new insight for the preparation of highly efficient photocatalysts for the oxidation of organic compounds.

Automated summary

In this study, the novel photocatalyst H3PW4Mo8O40/g-C3N4 was used for the oxidation of alcohols and sulfides, showing higher photocatalytic activity under visible light irradiation. With the variation of molybdenum substitution contents, PW4Mo8 demonstrated the best yield under visible-light irradiation, attributed to its redox and acid properties. This study provides insights for the preparation of efficient photocatalysts for the oxidation of organic compounds.