Characterization of Zr-doped TiO2 prepared by homogenous co-precipitation without high-temperature treatment
2007
Lukáč, Jozef | Klementová, Mariana | Bezdička, Petr | Bakardjieva, Snejana | Šubrt, Jan | Szatmáry, Lórant | Grusková, Anna
Zr-doped TiO₂ (anatase) was prepared by the homogenous co-precipitation method of the aqueous solutions containing TiOSO₄ and ZrCl₄ using urea as the precipitation agent. Nanocrystallites of Zr-doped TiO₂, 6–9 nm in size, intergrown with amorphous phase form 1–2 μm porous spherical clusters. Crystallite size of anatase decreases with increasing Zr content, and the catalyst becomes totally amorphous at 10 mol.% Zr. All samples exhibit high specific surface area, which increases with the addition of zirconium (from 391.3 to 689.1 m² g⁻¹).
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