Hydrophobic silica aerogels prepared by microwave irradiation

被引：26

作者：

Zhang, Xinyang ^{[1
]}

Chen, Zhaofeng ^{[1
]}

Zhang, Junxiong ^{[1
]}

Ye, Xinli ^{[1
]}

Cui, Sheng ^{[2
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Int Lab Insulat & Energy Efficiency Mat, Nanjing 211106, Peoples R China

[2] Nanjing Tech Univ, Jiangsu Collaborat Innovat Ctr Adv Inorgan Funct, Nanjing 211800, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2021年 / 762卷

基金：

中国国家自然科学基金;

关键词：

Silica aerogel; Microstructure; Super hydrophobic; Contact angle; AMBIENT-PRESSURE; GEL;

D O I：

10.1016/j.cplett.2020.138127

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Silica aerogels were synthesized by using tetraethoxysilane (TEOS) and methyltriethoxysilane (MTES) as coprecursors via the sol-gel method under the microwave irradiation condition. The optimal molar ratio of MTES:TEOS: EtOH: H2O is 0.8:1:8:4, and the obtained aerogels showed the bulk density is 0.097 g/cm(3), the surface area is 760.56 m(2)/g, and pore diameter is 6.06 nm, respectively. The microstructure on the skeleton of the bone networks was investigated by TEM, and the FTIR confirmed that the -OH groups were substituted by the -CH3 groups prepared by MTES/TEOS co-precursor, the superhydrophobic property was described with a water contact angle up to 168.0 degrees.

引用

页数：9

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