G. P. Kopitsa, V. K. Ivanov, S. V. Grigor'ev, P. E. Meskin, O. S. Polezhaeva, V. M. Garamus, “Mesostructure of xerogels of hydrated zirconium dioxide”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2007, Volume 85, Issue 2,Pages <nobr>132

This article is cited in 15 papers

CONDENSED MATTER

Mesostructure of xerogels of hydrated zirconium dioxide

G. P. Kopitsa^a, V. K. Ivanov^bc, S. V. Grigor'ev^a, P. E. Meskin^c, O. S. Polezhaeva^b, V. M. Garamus^d

^a B. P. Konstantinov Petersburg Nuclear Physics Institute, Russian Academy of Sciences
^b Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences
^c M. V. Lomonosov Moscow State University
^d GKSS Research Centre D-21502 Geesthacht, Germany

Abstract: The fractal properties of xerogels of hydrated zirconium dioxide ZrO₂, which are synthesized by precipitation from a zirconyl nitrate solution at various pH values, are studied. Small-angle neutron scattering data and low-temperature nitrogen adsorption data indicate the strong effect of the acidity of the medium on the fractal dimension of xerogels and the size of constituent monomer particles. It is shown that this effect is also characteristic of xerogels of hydrated hafnium dioxide HfO₂, which is a chemical analogue of hydrated zirconium dioxide.

PACS: 61.12.Ex, 61.43.Hv

Received: 12.12.2006