Tokumoto, M. S.Pulcinelli, Sandra Helena [UNESP]Santilli, Celso Valentim [UNESP]Craievich, A. F.2014-05-202014-05-201999-05-01Journal of Non-crystalline Solids. Amsterdam: Elsevier B.V., v. 247, p. 176-182, 1999.0022-3093http://hdl.handle.net/11449/34312We have investigated, by in situ small-angle X-ray scattering (SAXS), the kinetics of formation of zinc oxide colloidal suspensions obtained after refluxing alcoholic solution of zinc acetate and catalysed by lithium hydroxide. The experimental results demonstrate that the suspensions are composed of colloidal spheroidal particles with a multimodal size distribution. The average radius of the main mode, approximately 2 nm, is invariant but the number of these basic particles continuously increases for increasing hydrolysis reaction time. The other two modes correspond to particles with average radii close to 6 and 10 nm, respectively. The larger particles are formed by coagulation of the smaller ones. (C) 1999 Elsevier B.V. B.V. All rights reserved.176-182engArtigo10.1016/S0022-3093(99)00059-9WOS:000080506900032Acesso restrito997120258528696755842986818708650000-0002-8356-8093