Imperfect Oriented Attachment: Accretlon and Defect Generatlon of Hexagonal lnorganic-Surfactant Nanoparticles

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Title:	Imperfect Oriented Attachment: Accretlon and Defect Generatlon of Hexagonal lnorganic-Surfactant Nanoparticles
Authors:	范樂陽;Fahn, Y.Y.;沈傅彥;Shen, P;蘇安仲;Su, A.C.;(東方工商專科學校化學工程科)
Contributors:	東方工商專科學校化學工程科
Date:	2001-06-13
Issue Date:	2011-03-14 16:54:19 (UTC+8)
Abstract:	Imperfect oriented attachment of nanoparticles over specific surfaces is rationalized to cause accretion and defects for the hexagonal inorganic-surfactant mesophase. Analytical electron microscopy indicates that silicate MCM-41 particles, prepared in alkaline hydrothermal condition and then surfactant (cetyltrimethylammonium bromide) leached, have well-developed {10} surfaces with monolayer steps and a rather uniform base with constant tubular wall thickness. These surfaces are beneficial to {10} vicinal and head-on attachment, causing respectively edge dislocation and twist boundary for hexagonal silicatropic liquid crystal. Brownian motion may proceed above a critical temperature for anchorage release at the interface of imperfectly attached particles until an epitaxial relationship is reached.
Relation:	NANO LETTERS, Vol.1 no.6, pp.299-303
Appears in Collections:	[Department of Chemical and Materials Engineering] journal

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