Concise Synthesis of Silver-Containing Titania Xerogels

A concise procedure was developed for the synthesis of silver-containing xerogels Ag(0)/TiO 2 [0.2–3.2 wt % Ag(0)], including the dissolution of AgNO 3 in tetrabutoxytitanium, hydrolysis of the solution in acetic acid–water vapors, drying, and calcining the xerogel at 600–800°C. It was found by X-ra...

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Bibliographic Details
Published in:Russian journal of applied chemistry 2021-07, Vol.94 (7), p.879-883
Main Authors: Shishmakov, A. B., Mikushina, Yu. V.
Format: Article
Language:English
Subjects:
Acetic acid
Anatase
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Dissolution
Industrial Chemistry/Chemical Engineering
Inorganic Synthesis and Industrial Inorganic Chemistry
Roasting
Silver nitrate
Synthesis
Titanium dioxide
Xerogels
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Summary:A concise procedure was developed for the synthesis of silver-containing xerogels Ag(0)/TiO 2 [0.2–3.2 wt % Ag(0)], including the dissolution of AgNO 3 in tetrabutoxytitanium, hydrolysis of the solution in acetic acid–water vapors, drying, and calcining the xerogel at 600–800°C. It was found by X-ray diffraction analysis and electron microscopy that the bulk of metallic silver particles (75–90%) in the material calcined at 800°C has a size of 25–45 nm. The fraction of particles (in the form of crystal intergrowths) with a diameter of 95–115 nm rises with an increase in the AgNO 3 concentration at the dissolution stage; TiO 2 is present in the rutile phase. At a calcination temperature of 600°C, the dominant TiO 2 phase (72%) is anatase; in this case the size of silver particles is 5–10 nm.
ISSN:1070-4272
1608-3296
DOI:10.1134/S107042722107003X