Figure 10

ESR spectra of WO3, C3N4, and 0.3C3N4/WO3: (a) DMPO-⋅OH in aqueous, (b) DMPO-⋅O2− in ethyl alcohol, (c) Koutecky-Levich plots of data obtained by rotating disk electrode (RDE) analysis of C3N4 and 0.3C3N4/WO3, (d) radical trapping experiment results with 8 mL ultra-pure water, 2 mL cyclohexane, O2 at 6 mL min−1, 50 mg catalyst, irradiation for 6 h, and 10 mmol L−1 trapping agent.