NDLI: Small angle X-ray scattering study of surface modified tin oxide nanoparticles prepared by sol-gel route

Content Provider	Springer Nature Link
Author	Kawaguti, C. A. Pulcinelli, S. H. Santilli, C. V. Craievich, A. F.
Copyright Year	2006
Abstract	The surface properties of SnO$_{2}$ nanoparticles were modified by grafting ionic (Tiron®$_{,}$ (OH)$_{2}$C$_{6}$H$_{2}$(SO$_{3}$Na)$_{2}$·H$_{2}$O) or non-ionic (Catechol®$_{,}$ C$_{6}$H$_{4}$-1,2-(OH)$_{2}$) capping molecules during aqueous sol-gel processing to improve the redispersibility of powdered xerogel. The effect of the amount of grafted organic molecules on the redispersibility of powders in aqueous solution at several basic pH values was studied. The nanostructural features of the colloidal suspensions were analyzed by small angle X-ray scattering (SAXS) measurements. Irrespective of the nature and amount of grafted molecules, complete redispersion was obtained in aqueous solution at pH = 13. The redispersion at pH = 11 results in a mixture of dispersed primary particles and aggregates. The proportion of well dispersed nanoparticles and aggregates (and their average size) can be tuned by the quantity of grafted ionic molecules.
Starting Page	213
Ending Page	217
Page Count	5
File Format	PDF
ISSN	09280707
Journal	Journal of Sol-Gel Science and Technology
Volume Number	37
Issue Number	3
e-ISSN	15734846
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-02-24
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nanoparticles Surface modification SAXS Nanotechnology Inorganic Chemistry Optical and Electronic Materials Ceramics, Glass, Composites, Natural Methods
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Chemistry Materials Chemistry Biomaterials Condensed Matter Physics Electronic, Optical and Magnetic Materials

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