Photochemical properties of powdered titanium dioxide produced from monocrystal rutile under ambient air
- 32 Downloads
It is shown that the photochemical activity of titanium dioxide is significantly higher under the action of solar tropospheric radiation when it is not produced by the traditional way, but from the rutile monocrystal. The magnitudes and spectral dependences of the quantum yield of oxygen photoadsorption and carbon dioxide photodesorption for the titanium dioxide produced from a monocrystal are determined. A mechanism of a sharp increase of the titanium dioxide photoadsorption activity in the oxide surface absorption range is proposed.
KeywordsRutile Quantum Yield Oceanic Optic Titanium Dioxide Sample Photochemical Property
Unable to display preview. Download preview PDF.
- 1.I. Kostov, Mineralogy (Oliver and Boyd: Edinburg and London, 1968).Google Scholar
- 3.V. N. Parmon and V. S. Zakharenko, “Photocatalysis and Photosorbtion in the Earth’s Atmosphere,” Cat-Tech. 5(2), 96 (2001).Google Scholar
- 4.P. Ausloos, R. E. Rebbert, and L. J. Glasgov, “Photodecomposition of Chloromethane Adsorbed on Silica Surfaces,” Res. NBS. 82(1), 1 (1977).Google Scholar
- 5.V. A. Isidorov, E. M. Klokova, and I. V. Zgonnik, “About Photostimulated Decomposition Halogencontaining Organic Components of the Atmosphere at the Surface of Solid Particles,” Vestnik LGU, Ser. 4, No. 4, 71 (1990).Google Scholar
- 7.V. S. Zakharenko and V. N. Parmon, “On the Composition of Adsorbed Layer of the Magnesium Oxide Surface under Impact of the Air Atmosphere,” Russian J. Phys. Chem. 73(1), 124 (1999).Google Scholar
- 8.A. A. Lisachenko and F. I. Vilesov, Photocatalytic Properties of Oxides in the Range of Improper Absorption, Usp, Fotoniki (Izdat. Leningrad Univ.: Leningrad), No. 4.Google Scholar
- 9.A. M. Volodin, “EPR Investigation of the Mechanism of Formation of Centers at the MgO Surface in the Presence of N2O and O2 Molecules,” Russian J. Chem. Phys. 11(8), 1054 (1992).Google Scholar
- 10.V. S. Zakharenko and A, N. Moseichuk, “Adsorption of Freons by Calcium Carbonate under Atmospheric Conditions,” Opt. Atm. Ocean 18(5–6), 510 (2005).Google Scholar
- 12.V. S. Zakharenko and V. N. Parmon, “Spectral Dependences of Mutual Emission of Photogenerated H2 and CO2 from Pt/TiO2 Suspension into 1 N H2SO4,” Kin. Cat. 37(3), 427 (1996).Google Scholar
- 15.V. S. Zakharenko and S. A. Khromova, “On Applicability of Solid Aerosol Produced by Burning in Air of Titanium Microparticles to Liquidation of Consequences of Technogenic Catastrophes,” Ekol. Khim. 15(4), 226 (2006).Google Scholar
- 16.V. S. Vavilov, Effect of Radiation on Semiconductors (Fizmatgiz, Moscow, 1963) [in Russian].Google Scholar