Effect of sodium bicarbonate solution on methyltrimethoxysilane-derived silica aerogels dried at ambient pressure

Yujing Liu; Xiao Han; Balati Kuerbanjiang; Vlado K. Lazarov; Lidija Šiller

doi:10.1007/s11705-020-2028-4

Effect of sodium bicarbonate solution on methyltrimethoxysilane-derived silica aerogels dried at ambient pressure

Yujing Liu^*, Xiao Han, Balati Kuerbanjiang, Vlado K. Lazarov, Lidija Šiller

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Here we present an economical ambient pressure drying method of preparing monolithic silica aerogels from methyltrimethoxysilane precursor while using sodium bicarbonate solution as the exchanging solvent. We prepared silica aerogels with a density and a specific surface area of 0.053 g·cm⁻³ and 423 m²·g⁻¹, respectively. The average pore diameter of silica aerogels is 23 nm as the pore specific volume is 1.11 cm³·g⁻¹. Further, the contact angle between water droplet and the surface of silica aerogels in specific condition can be as high as 166°, which indicates a super-hydrophobic surface of aerogels.

Original language	English
Pages (from-to)	954-959
Journal	Frontiers of Chemical Science and Engineering
Volume	15
Issue number	4
Early online date	1 Mar 2021
DOIs	https://doi.org/10.1007/s11705-020-2028-4
Publication status	Published - Aug 2021

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Publisher Copyright:
© 2021, The Author(s).

Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.

Keywords

ambient pressure drying
methyltrimethoxysilane
silica aerogel
sodium bicarbonate
solvent exchange
trimethylchlorosilane

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title = "Effect of sodium bicarbonate solution on methyltrimethoxysilane-derived silica aerogels dried at ambient pressure",

abstract = "Here we present an economical ambient pressure drying method of preparing monolithic silica aerogels from methyltrimethoxysilane precursor while using sodium bicarbonate solution as the exchanging solvent. We prepared silica aerogels with a density and a specific surface area of 0.053 g·cm−3 and 423 m2·g−1, respectively. The average pore diameter of silica aerogels is 23 nm as the pore specific volume is 1.11 cm3·g−1. Further, the contact angle between water droplet and the surface of silica aerogels in specific condition can be as high as 166°, which indicates a super-hydrophobic surface of aerogels.",

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author = "Yujing Liu and Xiao Han and Balati Kuerbanjiang and Lazarov, {Vlado K.} and Lidija {\v S}iller",

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T1 - Effect of sodium bicarbonate solution on methyltrimethoxysilane-derived silica aerogels dried at ambient pressure

AU - Liu, Yujing

AU - Han, Xiao

AU - Kuerbanjiang, Balati

AU - Lazarov, Vlado K.

AU - Šiller, Lidija

PY - 2021/8

Y1 - 2021/8

N2 - Here we present an economical ambient pressure drying method of preparing monolithic silica aerogels from methyltrimethoxysilane precursor while using sodium bicarbonate solution as the exchanging solvent. We prepared silica aerogels with a density and a specific surface area of 0.053 g·cm−3 and 423 m2·g−1, respectively. The average pore diameter of silica aerogels is 23 nm as the pore specific volume is 1.11 cm3·g−1. Further, the contact angle between water droplet and the surface of silica aerogels in specific condition can be as high as 166°, which indicates a super-hydrophobic surface of aerogels.

AB - Here we present an economical ambient pressure drying method of preparing monolithic silica aerogels from methyltrimethoxysilane precursor while using sodium bicarbonate solution as the exchanging solvent. We prepared silica aerogels with a density and a specific surface area of 0.053 g·cm−3 and 423 m2·g−1, respectively. The average pore diameter of silica aerogels is 23 nm as the pore specific volume is 1.11 cm3·g−1. Further, the contact angle between water droplet and the surface of silica aerogels in specific condition can be as high as 166°, which indicates a super-hydrophobic surface of aerogels.

KW - ambient pressure drying

KW - methyltrimethoxysilane

KW - silica aerogel

KW - sodium bicarbonate

KW - solvent exchange

KW - trimethylchlorosilane

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JF - Frontiers of Chemical Science and Engineering

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Effect of sodium bicarbonate solution on methyltrimethoxysilane-derived silica aerogels dried at ambient pressure

Abstract

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