Photo- and thermogeneration of singlet oxygen by the metal ions deposited on Al2O3 and SiO2

The specifics of photo-and thermogeneration of singlet molecular oxygen by metal oxides deposited on silica gel and Al2O3 were studied. The deposited oxides were observed to generate equilibrium and superequilibrium concentrations of (1)Delta O-g(2). The V2O5/SiO2 and MoO3/SiO2 systems were found to be most active in both types of generation. A common mechanism of photo- and thermogeneration was proposed.