Preparation and evaluation of Au nanoparticle–silica aerogel nanocomposite

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...

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Main Author: Naruhito Katagiri
Format: Article
Language:English
Published: Taylor & Francis Group 2015-06-01
Series:Journal of Asian Ceramic Societies
Subjects:
Au nanoparticles
Silica aerogel
Supercritical drying
Dielectric properties
Online Access:http://www.sciencedirect.com/science/article/pii/S2187076415000044
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spelling doaj-5f8ffafe42db406a8662ef608b1eb6932021-05-02T01:28:46ZengTaylor & Francis GroupJournal of Asian Ceramic Societies2187-07642015-06-013215115510.1016/j.jascer.2015.01.003Preparation and evaluation of Au nanoparticle–silica aerogel nanocompositeNaruhito Katagiri0Advanced Ceramics Research Center, Nagoya Institute of Technology, 10-6-29, Asahigaoka, Tajimi, Gifu 507-0071, JapanA 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.http://www.sciencedirect.com/science/article/pii/S2187076415000044Au nanoparticlesSilica aerogelSupercritical dryingDielectric properties
collection DOAJ
language English
format Article
sources DOAJ
author Naruhito Katagiri
spellingShingle Naruhito Katagiri
Preparation and evaluation of Au nanoparticle–silica aerogel nanocomposite
Journal of Asian Ceramic Societies
Au nanoparticles
Silica aerogel
Supercritical drying
Dielectric properties
author_facet Naruhito Katagiri
author_sort Naruhito Katagiri
title Preparation and evaluation of Au nanoparticle–silica aerogel nanocomposite
title_short Preparation and evaluation of Au nanoparticle–silica aerogel nanocomposite
title_full Preparation and evaluation of Au nanoparticle–silica aerogel nanocomposite
title_fullStr Preparation and evaluation of Au nanoparticle–silica aerogel nanocomposite
title_full_unstemmed Preparation and evaluation of Au nanoparticle–silica aerogel nanocomposite
title_sort preparation and evaluation of au nanoparticle–silica aerogel nanocomposite
publisher Taylor & Francis Group
series Journal of Asian Ceramic Societies
issn 2187-0764
publishDate 2015-06-01
description 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.
topic Au nanoparticles
Silica aerogel
Supercritical drying
Dielectric properties
url http://www.sciencedirect.com/science/article/pii/S2187076415000044
work_keys_str_mv AT naruhitokatagiri preparationandevaluationofaunanoparticlesilicaaerogelnanocomposite
_version_ 1721496486608371712

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