Imperfect Oriented Attachment: Accretion and Defect Generation of Hexagonal Inorganic-Surfactant Nanoparticles

摘要: 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 then surfactant (cetyltrimethylammonium bromide) leached, have well-developed {10} with monolayer steps a rather uniform base constant tubular wall thickness. These are beneficial {∼10} vicinal head-on attachment, causing respectively edge dislocation twist boundary silicatropic liquid crystal. Brownian motion may proceed above critical temperature anchorage release at interface imperfectly attached particles until an epitaxial relationship reached.