Abstract
Hexagonal platy composite particles with a hydrotalcite core and a nanoporous silica shell with a thickness of ca. 100 nm were synthesized by the reaction of a Mg-Al hydrotalcite with a homogeneous aqueous solution containing tetraethoxysilane, hexadecyltrimethylammonium chloride, ammonia and methanol at 3 °C. The calcination of the products at 500 °C in air led to the composite particle with a Mg/Al mixed oxide core and a nanoporous silica shell. Hexagonal platy particles of nanoporous silica with a pore diameter of 2.3 nm and BET surface area of 700 m2 (g of silica)-1 were obtained by removing the Mg/Al mixed oxide core.
| Original language | English |
|---|---|
| Pages (from-to) | 311-316 |
| Number of pages | 6 |
| Journal | Journal of Colloid and Interface Science |
| Volume | 312 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2007 Aug 15 |
Keywords
- Core shell particles
- Hydrotalcite
- Nanoporous silicas
- Supramolecular templating approach
ASJC Scopus subject areas
- Colloid and Surface Chemistry
- Physical and Theoretical Chemistry
- Surfaces and Interfaces
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Cite this
Shimura, N., & Ogawa, M. (2007). Preparation of hexagonal platy particles of nanoporous silica using hydrotalcite as morphology template. Journal of Colloid and Interface Science, 312(2), 311-316. https://doi.org/10.1016/j.jcis.2007.02.091