Epoxide-mediated synthesis of germania aerogels in acetic acid
https://doi.org/10.17586/2220-8054-2025-16-3-343-351
Abstract
A novel alkoxide-free method for the sol-gel synthesis of germania aerogels is proposed. The method is based on the hydrolysis of GeCl4 by propylene oxide in concentrated acetic acid which is used as a solvent. The proposed protocol allows one to obtain monolithic amorphous germania aerogels constructed of a three-dimensional network of nanoscale (⁓20 nm) particles and possessing specific surface area of about 80 m2/g. The addition of hydrochloric acid to the reaction mixture results in the synthesis of nanocrystalline GeO2 (hexagonal system) aerogels. The synthesized materials were characterized by X-ray diffraction, IR spectroscopy, scanning electron microscopy and low temperature nitrogen adsorption.
Supporting agencies: This study is performed within the ARIADNA Collaboration operating under the NICA facility as a part of State Assignment “Solving topical problems with NICA charged particle beams (Ref. # 124110600054-0)”. This research was performed using the equipment of the JRC PMR IGIC RAS.
About the Authors
O. M. Gajtko
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Russian Federation
Russian Federation
Olga M. Gajtko
Moscow
S. V. Golodukhina
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Russian Federation
Russian Federation
Svetlana V. Golodukhina
Moscow
S. Yu. Kottsov
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Russian Federation
Russian Federation
Sergey Yu. Kottsov
Moscow
A. G. Son
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Russian Federation
Russian Federation
Alexandra G. Son
Moscow
T. O. Kozlova
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Russian Federation
Russian Federation
Taisiya O. Kozlova
Moscow
A. E. Baranchikov
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Russian Federation
Russian Federation
Alexander E. Baranchikov
Moscow
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Review
For citations:
Gajtko O.M., Golodukhina S.V., Kottsov S.Yu., Son A.G., Kozlova T.O., Baranchikov A.E. Epoxide-mediated synthesis of germania aerogels in acetic acid. Nanosystems: Physics, Chemistry, Mathematics. 2025;16(3):343-351. https://doi.org/10.17586/2220-8054-2025-16-3-343-351
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