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PREPARATION OF ULTRAFINE MONODISPERSE SILVER CHLORIDE PARTICLES IN NON-IONIC REVERSED MICELLES

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摘要 The ultrafine particles of silver chloride (AgCl) were obtained by mixing two separately prepared reversed micelle systems both containing a non-ionic surfactant,cyclohexane and an aqueous solution of either silver nitrate (AgNO3) or potassium chloride (KCl). The size distribution of spherical AgCl particles depended on the solubility behavior of aqueous electrolytes in surfactant solution. The NMR, near infrared,light-scattering, X-ray, UV spectroscopy and TEM (transmission electron microscopy) were used to examine the relationship between the size of particles and the states of solubilized water or reversed micelles. In the solubilized regions, it was found that three states of water were related to the formation of reversed and swollen micelles or W/O microemulsions. i.e, monodisperse particles were formed in reversed micelle and swollen micelle systems, whereas in W/O microemulsion system the particles became polydisperse. The ultrafine particles of silver chloride (AgCl) were obtained by mixing two separately prepared reversed micelle systems both containing a non-ionic surfactant,cyclohexane and an aqueous solution of either silver nitrate (AgNO3) or potassium chloride (KCl). The size distribution of spherical AgCl particles depended on the solubility behavior of aqueous electrolytes in surfactant solution. The NMR, near infrared,light-scattering, X-ray, UV spectroscopy and TEM (transmission electron microscopy) were used to examine the relationship between the size of particles and the states of solubilized water or reversed micelles. In the solubilized regions, it was found that three states of water were related to the formation of reversed and swollen micelles or W/O microemulsions. i.e, monodisperse particles were formed in reversed micelle and swollen micelle systems, whereas in W/O microemulsion system the particles became polydisperse.
出处 《Chinese Chemical Letters》 SCIE CAS CSCD 1995年第12期1095-1098,共4页 中国化学快报(英文版)
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