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

Lookup NU author(s): Dr Yujing Liu, Dr Xiao Han, Professor Lidija Siller

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).

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.

Publication metadata

Author(s): Liu Y, Han X, Kuerbanjiang B, Lazarov V, Siller L

Publication type: Article

Publication status: Published

Journal: Frontiers of Chemical Science and Engineering

Year: 2021

Volume: 15

Pages: 954-959

Print publication date: 01/08/2021

Online publication date: 01/03/2021

Acceptance date: 17/10/2020

Date deposited: 07/12/2020

ISSN (print): 2095-0179

ISSN (electronic): 2095-0187

Publisher: Springer

URL: https://doi.org/10.1007/s11705-020-2028-4

DOI: 10.1007/s11705-020-2028-4

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