Fig. 12

(a) Photocatalytic degradation of CV dye with YTO-90%GCN catalyst in the absence and presence of scavengers (AO, BQ, IPA and SA) under visible light irradiation; (b) and (c) ESR spectra of DMPO-•OH and DMPO-•O₂⁻ using YTO-90%GCN catalyst under visible light irradiation.