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 journalArticlepeer-review


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 languageEnglish
Pages (from-to)954-959
JournalFrontiers of Chemical Science and Engineering
Issue number4
Early online date1 Mar 2021
Publication statusPublished - Aug 2021

Bibliographical note

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

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


  • ambient pressure drying
  • methyltrimethoxysilane
  • silica aerogel
  • sodium bicarbonate
  • solvent exchange
  • trimethylchlorosilane

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