Enhancement of photocatalytic activity in reducing CO2 over CdS/g-C3N4 composite catalysts under UV light irradiation

- CdS/g-C3N4 composite with various mass ratios is prepared by hydrothermal method.
- CdS/g-C3N4 composite catalysts show better photocatalytic activity than those of pure CdS or g-C3N4.
- Methyl formate was produced through photocatalytic reduction of CO2 in methanol.
- The possible mechanism of photocatalytic reduction of CO2 is proposed.