najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2025-16-3-343-351najo-323Research ArticleNANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICSНАНОСИСТЕМЫ: ФИЗИКА, ХИМИЯ, МАТЕМАТИКАEpoxide-mediated synthesis of germania aerogels in acetic acidЭпоксид-индуцированный синтез аэрогелей германия в уксусной кислотеhttps://orcid.org/0000-0001-6424-1282ГайткоО.GajtkoO. M.

Olga M. Gajtko

Moscow

olga.gajtko@igic.ras.ruhttps://orcid.org/0000-0001-9317-1340ГолодухинаС.GolodukhinaS. V.

Svetlana V. Golodukhina

Moscow

golodukhina@igic.ras.ruhttps://orcid.org/0000-0001-8263-889XКотцовС.KottsovS. Yu.

Sergey Yu. Kottsov

Moscow

skottsov@igic.ras.ruhttps://orcid.org/0009-0006-7107-5714СонА.SonA. G.

Alexandra G. Son

Moscow

agson@igic.ras.ruhttps://orcid.org/0000-0002-9757-9148КозловаТ.KozlovaT. O.

Taisiya O. Kozlova

Moscow

taisiya@igic.ras.ruhttps://orcid.org/0000-0002-2378-7446БаранчиковА.BaranchikovA. E.

Alexander E. Baranchikov

Moscow

baranchikov@igic.ras.ruKurnakov Institute of General and Inorganic Chemistry of the Russian Academy of SciencesRussian Federation202529062025163343351Copyright © Gajtko O.M., Golodukhina S.V., Kottsov S.Y., Son A.G., Kozlova T.O., Baranchikov A.E., 20252025Гайтко О., Голодухина С., Котцов С., Сон А., Козлова Т., Баранчиков А.Gajtko O.M., Golodukhina S.V., Kottsov S.Y., Son A.G., Kozlova T.O., Baranchikov A.E.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/323

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.

Предложен новый метод золь-гель синтеза аэрогелей германия без участия алкоксидов. Метод основан на гидролизе GeCl4 пропиленоксидом в концентрированной уксусной кислоте, используемой в качестве растворителя. Предложенный способ позволяет получать монолитные аморфные аэрогели германия, состоящие из трехмерной сетки наноразмерных (⁓ 20 нм) частиц и обладающие удельной площадью поверхности около 80 м2/г. Добавление соляной кислоты в реакционную смесь приводит к получению нанокристаллических аэрогелей GeO2 (гексагональная сингония). Синтезированные материалы были охарактеризованы методами рентгеновской дифракции, ИК-и КР-спектроскопии, сканирующей электронной микроскопии и низкотемпературной адсорбции азота.

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The authors declare that there are no conflicts of interest present.