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Characterization of Surface Species on Mesoporous TiO2 Prepared by TiC Oxidation

Abstract

Surface species responsible for low pH values of zero charge point and high sorption capacity of mesoporous TiO2 powder obtained by TiC oxidation with nitric acid were studied by FTIR, EPR and XPS methods. It was found that during the titania synthesis the oxide surface was modified by nitrate-nitrite, carboxylic groups, NOx and ·C≡ radicals which determined adsorption properties of the TiO2 powder.
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