Monolayer Modification of Spherical Amorphous Silica by Clay Nanosheets
Nanako Nishida,
Kyosuke Arakawa,
Tetsuya Shimada
et al.
Abstract:Clay-silica nanocomposite materials (CSiN) were prepared by an electrostatic interaction between negatively charged clay nanosheets and positively charged spherical silica, which was modified with an alkyl ammonium group by silane coupling. By optimization of the preparation conditions, 84% coverage of the silica surface by the clay nanosheets was achieved. Adsorption experiments using cationic porphyrin dyes on the CSiN revealed that the clay nanosheet covers the spherical silica as a single layer and does no… Show more
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