Visible-light CO2 photocatalytic reduction performance of ball-flower-like Bi2WO6 synthesized without organic precursor: Effect of post-calcination and water vapor

- Photocatalytic CO2 reduction on non-organic synthesized PB-Bi2WO6 was investigated.
- CO was detected as the major product.
- Increased amount of CO was yielded in the condition with little water vapor.
- Photocatalytic performance was enhanced with Bi2WO6 after 550 °C post-annealing.
- Renewing the catalysts used in CO2 photoreduction by water washing was achieved.