The impact of aluminum oxide deposition on the high-temperature resistance of silica aerogels

IF 2.3 4区 材料科学 Q2 MATERIALS SCIENCE, CERAMICS Journal of Sol-Gel Science and Technology Pub Date : 2024-09-21 DOI:10.1007/s10971-024-06547-x
Shuai Gao, Meixu Han, Jinwen Pan, Yang Zhong, Hongyi Jiang
{"title":"The impact of aluminum oxide deposition on the high-temperature resistance of silica aerogels","authors":"Shuai Gao,&nbsp;Meixu Han,&nbsp;Jinwen Pan,&nbsp;Yang Zhong,&nbsp;Hongyi Jiang","doi":"10.1007/s10971-024-06547-x","DOIUrl":null,"url":null,"abstract":"<div><p>Silica aerogel (SA) was synthesized through the sol-gel process followed by ambient pressure drying, with aluminum-deposited silica aerogel (ASA) subsequently produced via aluminum deposition using an AlCl<sub>3</sub>·6H<sub>2</sub>O hydrolysis solution. This study examined the impact of deposition time and calcination temperature on ASA’s characteristics. Compared to the non-aluminum-deposited SA, ASA with 12 h of deposition time (ASA-12h) showcased a significant increase in specific surface area, reaching 675m<sup>2</sup> ∙ g<sup>−1</sup> at room temperature. Post-calcination at 800 °C and 1000 °C resulted in specific surface areas of 613m<sup>2</sup> ∙ g<sup>−1</sup> and 265m<sup>2</sup> ∙ g<sup>−1</sup>, respectively, markedly surpassing those of SA (240 m<sup>2</sup>∙g<sup>−1</sup> at 800 °C and 16m<sup>2</sup> ∙ g<sup>−1</sup> at 1000 °C). The results demonstrate that during the aging process, the deposited aluminum is coated by the aging solution, enabling it to remain stable and distribute uniformly. This deposition not only increases the particle size but also enhances structural stability. Furthermore, the formation of new Si-O-Al bonds improves the thermal stability of the silicon dioxide lattices. These insights pave the way for the industrial production of aerogels that are resistant to high temperatures.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"112 2","pages":"624 - 637"},"PeriodicalIF":2.3000,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Sol-Gel Science and Technology","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10971-024-06547-x","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0

Abstract

Silica aerogel (SA) was synthesized through the sol-gel process followed by ambient pressure drying, with aluminum-deposited silica aerogel (ASA) subsequently produced via aluminum deposition using an AlCl3·6H2O hydrolysis solution. This study examined the impact of deposition time and calcination temperature on ASA’s characteristics. Compared to the non-aluminum-deposited SA, ASA with 12 h of deposition time (ASA-12h) showcased a significant increase in specific surface area, reaching 675m2 ∙ g−1 at room temperature. Post-calcination at 800 °C and 1000 °C resulted in specific surface areas of 613m2 ∙ g−1 and 265m2 ∙ g−1, respectively, markedly surpassing those of SA (240 m2∙g−1 at 800 °C and 16m2 ∙ g−1 at 1000 °C). The results demonstrate that during the aging process, the deposited aluminum is coated by the aging solution, enabling it to remain stable and distribute uniformly. This deposition not only increases the particle size but also enhances structural stability. Furthermore, the formation of new Si-O-Al bonds improves the thermal stability of the silicon dioxide lattices. These insights pave the way for the industrial production of aerogels that are resistant to high temperatures.

Graphical Abstract

Abstract Image

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
氧化铝沉积对二氧化硅气凝胶耐高温性的影响
通过溶胶-凝胶工艺合成了二氧化硅气凝胶(SA),然后进行常压干燥,随后使用 AlCl3-6H2O 水解溶液通过铝沉积制得铝沉积二氧化硅气凝胶(ASA)。本研究考察了沉积时间和煅烧温度对 ASA 特性的影响。与未沉积铝的硅酸钠相比,沉积时间为 12 小时的硅酸钠(ASA-12h)的比表面积显著增加,室温下达到 675m2 ∙ g-1。在 800 °C 和 1000 °C 煅烧后,比表面积分别达到 613m2 ∙ g-1 和 265m2 ∙ g-1,明显超过了 SA 的比表面积(800 °C 时为 240 m2∙g-1 ,1000 °C 时为 16m2 ∙ g-1)。结果表明,在老化过程中,沉积的铝被老化溶液包覆,使其保持稳定并均匀分布。这种沉积不仅增大了颗粒尺寸,还增强了结构稳定性。此外,新的 Si-O-Al 键的形成提高了二氧化硅晶格的热稳定性。这些见解为耐高温气凝胶的工业化生产铺平了道路。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Journal of Sol-Gel Science and Technology
Journal of Sol-Gel Science and Technology 工程技术-材料科学:硅酸盐
CiteScore
4.70
自引率
4.00%
发文量
280
审稿时长
2.1 months
期刊介绍: The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.
期刊最新文献
Enhancing glass surface hydrophobicity: the role of Perfluorooctyltriethoxysilane in advanced surface modification Structural, electrical, and thermal properties of Ba-substituted B(Pb)SCCO superconductors prepared by sol-gel method Role of chelating agents on the sol-gel synthesis of bismuth ferrite nanoparticles Enhanced uniformity of zirconia coating for high power lasers via solvent replacement and PEG-doping Novel molybdenum sulfide-decorated graphitic carbon nitride nanohybrid for enhanced electrochemical oxygen evolution reaction
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1