SAXS study of the kinetics of formation of ZnO colloidal suspensions
Nenhuma Miniatura disponível
Data
1999-05-01
Autores
Tokumoto, M. S.
Pulcinelli, Sandra Helena [UNESP]
Santilli, Celso Valentim [UNESP]
Craievich, A. F.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
We 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.
Descrição
Palavras-chave
Como citar
Journal of Non-crystalline Solids. Amsterdam: Elsevier B.V., v. 247, p. 176-182, 1999.