Quantitative studies on the preparation of colloidal particles of cobalt hydroxide by the moving chemical reaction boundary method in agarose gel

Quantitative investigations were performed for the synthesis of colloidal particles of cobalt hydroxide in agarose gel by the moving chemical reaction boundary method . The experimental results show that: (1) the sizes of the colloidal particles can be controlled by changing the concentration of aga...

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Bibliographic Details
Published in:Colloid and polymer science 2004-07, Vol.282 (9), p.1059-1062
Main Authors: CAO, Cheng-Xi, QIAN, Yi-Tai, GAN, Wan-Er
Format: Article
Language:English
Subjects:
Atoms & subatomic particles
Boundaries
Chemical reactions
Chemistry
Cobalt
Colloid chemistry
Colloidal state and disperse state
Colloids
Crystals
Exact sciences and technology
General and physical chemistry
Hydroxides
Physical and chemical studies. Granulometry. Electrokinetic phenomena
Synthesis
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Summary:Quantitative investigations were performed for the synthesis of colloidal particles of cobalt hydroxide in agarose gel by the moving chemical reaction boundary method . The experimental results show that: (1) the sizes of the colloidal particles can be controlled by changing the concentration of agarose gel, (2) the concentration of the colloidal particles is also controlled by changing the concentrations of CoCl^sub 2^ and/or NaOH, and (3) most importantly, the concentration of colloidal particles can be predicted with the theory of moving chemical reaction boundary (MCRB). The colloidal particles prepared by the MCRB are amorphous and are more easily oxidized than particles prepared by other methods.[PUBLICATION ABSTRACT]
ISSN:0303-402X
1435-1536
DOI:10.1007/s00396-003-1032-9