Enhancing Green Product Generation of Photocatalytic NOOxidation: A Case of WO3Nanoplate/g-C3N4S-SchemeHeterojunction

Nitric oxide (NO) removal by photocatalyticoxidation over g-C3N4has achieved more efficient results.However, there is a concern about the high NO-to-NO2conversion yield of products, which is not suitable for thephotocatalytic NO reaction. In this study, we modify g-C3N4byWO3nanoplates for thefirst time for photocatalytic NO oxidationover a WO3/g-C3N4composite to enhance the green productselectivity under atmospheric conditions. The results indicate thatthe photocatalytic efficiency for NO removal by the WO3/g-C3N4composite is drastically improved and achieves 52.5%, which isapproximately 2.1 times higher than that of pure g-C3N4.Significantly, the green product (NO3-) selectivity of the WO3/g-C3N4composite is 8.7 times higher than that of pure g-C3N4, andthe selectivity remained high even afterfive cycles of photocatalytic tests. We also conclude that the enhanced green productselectivity of photocatalytic NO oxidation by the WO3/g-C3N4composite is due to the separation and acceleration of thephotogenerated charges of the WO3/g-C3N4S-scheme heterojunction

Automated summary

In this study, WO3 nanoplates were used to modify g-C3N4 for the first time to enhance the green product selectivity of photocatalytic NO oxidation. The results showed a significant improvement in NO removal efficiency and green product selectivity with the WO3/g-C3N4 composite.