The two-phase photocatalytic oxidation of toluene and p-xylene by dioxygen occurred efficiently using 3-cyano-1-decylquinolinium hexafluorophosphate (DeQuCN+PF6−) as an organic photocatalyst. When toluene and p-xylene were used as the solvent with 2% H2O, the oxygenated products were produced in the organic phase and hydrogen peroxide was produced in the aqueous phase at high turnover numbers.
