Interaction of oxygen-containing compounds of the atmosphere gas phase with the surface of the sedimented aerosol produced from a TiO2 crystal
V.S. Zakharenko1, E.B. Daybova2
1Boreskov Institute of Catalysis of the Siberian Branch of the RAS, pr. Lavrentieva 5, Novosibirsk, Russia, 630090
2Siberian Research Institute of agriculture and peat Russian academy of agricultural sciences, 3 Gagarin str., Tomsk, Russia, 634050
Keywords: TiO2 monocrystal, dispersion under ambient air, TiO2 aerosol, О2 photoadsorption, TiO2 photoreduction
Abstract
It was found that under UV irradiation absorbed by titanium dioxide, in the absence of oxygen, water effectively reacts with oxygen of titanium dioxide grating. Oxygen is subsequently released into gaseous phase in the dark, thus retrieving titanium dioxide. It is supposed that the filling with oxygen of Earth’s atmosphere may take place during a similar process of reduction of oxygen-containing metal compounds of lithosphere and tropospheric solid aerosols by water under hard UV irradiation.
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