期刊
MATERIALS LETTERS
卷 60, 期 29-30, 页码 3857-3860出版社
ELSEVIER
DOI: 10.1016/j.matlet.2006.03.129
关键词
nanomaterials; sol-gel preparation; mesoporous silica; monodispersity; uniform hexagonal platelet; high yield
Monodispersed SBA-15 equilateral hexagonal platelets with thick silica wall have been synthesized at high yield (similar to 100%) by a static self-assembly strategy in the presence of commercial non-ionic block copolymer P104 and inorganic salt under acidic conditions. The results of the experiments show that the synthesized materials have a uniform internal structure of the well-ordered hexagonal mesoporous channels arrayed vertically to the platelet face, and a high monodispersity both in external morphology and particle size. An external morphological evolvement from hexagonal corona to crystal-like hexagonal platelet and then to biscuit-like hexagonal plate, as well as an increase of the pore size and a decrease of the silica wall thickness with increasing K2SO4 concentrations in the template solution, has been found. (c) 2006 Published by Elsevier B.V.
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