Formation of monodispersed spindle-type hematite particles

Procedures have been developed which yield spindle-type colloidal hematite particles of narrow size distribution by forced hydrolysis of ferric chloride solutions at elevated temperatures. It was shown that small additions of phosphate or hypophosphite ions to such systems before aging had a signifi...

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Bibliographic Details
Published in:Journal of colloid and interface science 1984-01, Vol.102 (1), p.146-151
Main Authors: Ozaki, Masataka, Kratohvil, Stanka, Matijević, Egon
Format: Article
Language:English
Subjects:
Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
General, apparatus, technics of preparation
Miscellaneous
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Summary:Procedures have been developed which yield spindle-type colloidal hematite particles of narrow size distribution by forced hydrolysis of ferric chloride solutions at elevated temperatures. It was shown that small additions of phosphate or hypophosphite ions to such systems before aging had a significant effect on the resulting particle shape. Specifically, the axial ratio of the precipitated solids depended on the concentration of these anions in the original solutions.
ISSN:0021-9797
1095-7103
DOI:10.1016/0021-9797(84)90208-X