Unidirectional Crystallization of Charged Colloidal Silica Due to the Diffusion of a Base

Dilute aqueous dispersions of charged colloidal silica (particle volume fraction = ∼0.03−0.04, particle diameter = 110 nm) exhibit unidirectional crystal growth due to the diffusion of a weak base, pyridine (Py). Similar diffusion−crystallization is enabled by a salt of a weak acid and a strong base...

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Veröffentlicht in:	Langmuir 2007-07, Vol.23 (14), p.7510-7517
Hauptverfasser:	Murai, Masako, Yamada, Hiroshi, Yamanaka, Junpei, Onda, Sachiko, Yonese, Masakatsu, Ito, Kensaku, Sawada, Tsutomu, Uchida, Fumio, Ohki, Yoshimasa
Format:	Artikel
Sprache:	eng
Schlagworte:	Adsorption Chemistry Colloidal gels. Colloidal sols Colloidal state and disperse state Colloids - chemistry Crystallization Diffusion Exact sciences and technology General and physical chemistry Hydrogels - chemistry Nanostructures - chemistry Nanotechnology Particle Size Physical and chemical studies. Granulometry. Electrokinetic phenomena Pyridines - chemistry Silicon Dioxide - chemistry Sodium Bicarbonate - chemistry Static Electricity Surface physical chemistry X-Ray Diffraction
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