| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1654179 | Materials Letters | 2005 | 5 Pages |
Abstract
Under new mild conditions, above the isoelectric point of silica (pH = 2–5), SBA-15 mesoporous silica with ordered hexagonal pores were prepared by pre-hydrolyzing of tetraethyl orthosilicate in the presence of poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) as a template. Small angle X-ray scattering (SAXS), nitrogen adsorption and desorption experiments, and transmission electron micrograph (TEM) measurements showed well-ordered hexagonal array structure, though there are some changes in wall thickness and density with the increase of pH value from 2 to 5.
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Authors
Xiuguo Cui, Wang-Cheol Zin, Won-Jei Cho, Chang-Sik Ha,