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Synthesis and characterization of different binary and ternary phase mixtures of mesoporous nanocrystalline titanium dioxideстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 26 июня 2024 г.
- Авторы: Ermokhina N.I., Shvalagin V.V., Romanovska N.I., Manoryk P.A., Barakov R.Yu, Kompanets M.O., Sapsay V.I., Klymchuk D.O., Puziy A.M.
- Журнал: SN Applied Sciences
- Том: 3
- Номер: 4
- Год издания: 2021
- Первая страница: 491
- DOI: 10.1007/s42452-021-04474-y
- Аннотация: Different phase compositions of mesoporous nanocrystalline TiO2 (meso-nc-TiO2), comprised of anatase (16–100%), rutile (0–70%) and brookite (0–52%) were obtained by sol–gel synthesis with or without hydrothermal treatment (HTT) by means of titanium tetrabutoxide and dibenzo-18-croun-6 as structure-forming agent in the presence of HCl. It was shown, that small amounts of surfactant and/or lanthanum salt as well as HTT determine phase composition and texture of meso-nc-TiO2. All samples were calcined at 500 оС and characterized by SEM, TEM, XRD and N2-adsorption/desorption isotherms. It has been established that photocatalytic properties of almost all obtained samples significantly exceed the photocatalytic activity of Evonik P-25 TiO2 in gas phase ethanol oxidation. The most active sample is characterized by phase composition of anatase (97%)-rutile (3%). It is obvious, that decrease of photocatalytic activity of sample was affected by decrease of anatase phase content. It was shown that the specific surface area of the sample is not a key factor affecting the activity of mixed-phase meso-nc-TiO2 samples in the process of ethanol oxidation.
- Добавил в систему: Бараков Роман Юрьевич