Preparation of hollow silica nanospheres in reverse liquid-liquid dispersions
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- Tachibana Toshihiko
- Niigata University
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- Mizoguchi Yoshiya
- Niigata University
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- Kimura Isao
- Niigata University
Bibliographic Information
- Other Title
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- 逆相液液分散系におけるシリカ中空ナノスフィアの調製
Description
Hollow silica nanospheres were prepared through the sol-gel process of silicon tetramethoxide in reverse liquid-liquid dispersions. Sorbitan trioleate and/or sodium bis(2-ethylhexyl)sulfosuccinate (AOT) were dissolved at 10 wt% in cyclohexane to prepare an oil phase. Citric acid aqueous solution at a pH of 5.0 was used as an aqueous phase. When the aqueous phase at a volume fraction of 0.01 was mixed with the oil phase at AOT concentrations of 60 mass% and less, reverse emulsions were formed. The products were more than 200 nm in size with wide size distribution. The solubilization was observed at AOT concentrations of 70 mass% and more. The products were recognized to be hollow nanospheres, of which the size was ranged from 20 to 30 nm and the wall thickness was ca. 5 nm. Such an almost uniform size suggests that the nanospheres have been produced at the reverse micelles as the reaction site.
Journal
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- Preprints of Annual Meeting of The Ceramic Society of Japan<br> Preprints of Fall Meeting of The Ceramic Society of Japan
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Preprints of Annual Meeting of The Ceramic Society of Japan<br> Preprints of Fall Meeting of The Ceramic Society of Japan 2012S (0), 433-433, 2012
The Ceramic Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001205621870976
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- NII Article ID
- 130006981899
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed