Preparation of noble metal sols in the presence of surfactants and their properties

doi:10.1016/0021-9797(86)90354-1

Journal of Colloid and Interface Science

Volume 110, Issue 1, March 1986, Pages 82-87

https://doi.org/10.1016/0021-9797(86)90354-1 Get rights and content

Abstract

Stable sols of ruthenium, rhodium, palladium, platinum, silver, and gold were prepared from aqueous solutions of the corresponding noble metal salts by reduction with sodium borohydride in the presence of three different types of surfactants, stearyltrimethylammonium chloride (SC), sodium dodecylbenzenesulfonate (SD), and polyethylene glycol mono-p-nonylphenyl ether (PN). The size of colloidal particles in these sols differs from one another according to the type of surfactant. The cationic surfactant, SC, gave positively charged sols, while either the anionic one, SD, or neutral one, PN, gave negatively charged sols. Surfactants also had considerable effects on the stabilities of sols toward electrolytes.

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Preparation of noble metal sols in the presence of surfactants and their properties

Abstract

Kolloid Z.

Kolloid Z.

Trans. Faraday Soc.

Trans. Faraday Soc.

Nippon Kagaku Zasshi

J. Colloid Interface Sci.

Kolloid Z.

Z. Anal. Chem.

Ber.