The properties of silica aerogels hybridized with SiO2 nanoparticles by ambient pressure drying

被引：29

作者：

Jung, In-Keun ^{[1
]}

Gurav, Jyoti L. ^{[1
]}

Ha, Tae-Jung ^{[1
]}

Choi, Sun Gyu ^{[1
]}

Baek, Seungsu ^{[2
]}

Park, Hyung-Ho ^{[1
]}

机构：

[1] Yonsei Univ, Dept Mat Sci & Engn, Seoul 120749, South Korea

[2] Agcy Def Dev, Taejon 300600, South Korea

来源：

CERAMICS INTERNATIONAL | 2012年 / 38卷

关键词：

Sol-gel processes; Composites; Thermal properties; SiO2; PHYSICAL-PROPERTIES;

D O I：

10.1016/j.ceramint.2011.04.060

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this study, we report the chemical characteristics of silica aerogels that were produced by adding SiO2 nanoparticles into silica aerogel by ambient pressure drying. We synthesized silica aerogel composites with different weight percentages of SiO2 nanoparticles ranging from 0 wt% to 0.025 wt% of the total amount of solution. As the wt% of SiO2 nanoparticles increased, the number of chemical bonds that formed during condensation of the silica aerogel increased because of the presence of surface hydroxyl groups, thus the particle size of the silica aerogels increased. Silica nanoparticle-doping of silica aerogels can be used to control the synthesis of nanocomplex structures. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：S105 / S108

页数：4

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