期刊
JOURNAL OF ASIAN CERAMIC SOCIETIES
卷 3, 期 2, 页码 151-155出版社
TAYLOR & FRANCIS LTD
DOI: 10.1016/j.jascer.2015.01.003
关键词
Au nanoparticles; Silica aerogel; Supercritical drying; Dielectric properties
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/cm(3), 94%, and 890 m(2)/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 x 10(-3) in the range of 10 MHz to 1 GHz. (C) 2015 The Ceramic Society of Japan and the Korean Ceramic Society. Production and hosting by Elsevier B.V. All rights reserved.
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