Photo-accumulating composite materials based on heteropolymolybdates

Abstract

It was shown that modifying titanium dioxide particles with ammonium 6-molybdoferrate (II) and ammonium 6-molybdonickelate (II) gives the photocatalyst the ability to accumulate a photogenerated charge and maintain oxidative activity for some time after ultraviolet irradiation. In this case, heteropolymolybdates not only ensure the accumulation of a photoinduced cathodic charge, but also the conversion of hydrogen peroxide, formed during the oxidation of reduced forms of heteropolymolybdates with air oxygen, to highly active hydroxyl radicals.

Keywords

• nanodispersed titanium dioxide
• photochemistry
• polycondensation of oxoacids of transition metals
• ultraviolet radiation
• heteropolymolybdates