Preparation and evaluation of Au nanoparticle–silica aerogel nanocomposite
A Au nanoparticle–silica aerogel nanocomposite was prepared by the gelling of a tetramethyl orthosilicate (TMOS)/ethanol solution together with Au nanoparticles and drying the wet gel in supercritical carbon dioxide. The aerogel nanocomposite contained Au nanoparticles at a concentration of 0.268 pp...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2015-06-01
|
| Series: | Journal of Asian Ceramic Societies |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2187076415000044 |
| Summary: | A Au nanoparticle–silica aerogel nanocomposite was prepared by the gelling of a tetramethyl orthosilicate (TMOS)/ethanol solution together with Au nanoparticles and drying the wet gel in supercritical carbon dioxide. The aerogel nanocomposite contained Au nanoparticles at a concentration of 0.268 ppm. The bulk density, porosity, and specific surface area of the obtained nanocomposite were 0.126 g/cm3, 94%, and 890 m2/g, respectively. The nanocomposite was reddish-violet in color and transparent, and had a relative permittivity of approximately 6 with a dielectric loss of ca. 1 × 10−3 in the range of 10 MHz to 1 GHz. |
|---|---|
| ISSN: | 2187-0764 |