Synthesis of TIO2 by solvothermal method and its photocatalytic activity towards Biseptol and Congo red
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Дата
2022
Науковий керівник
Назва журналу
Номер ISSN
Назва тому
Видавець
КПІ ім. Ігоря Сікорського; ТОВ «Українська водна спілка»
Анотація
The creation of ceramic membranes with additional functional properties, such as antibacterial and
photocatalytic, is a popular and promising area of research in the field of water treatment. The
article is devoted to the synthesis of titanium (IV) oxide powders by the solvothermal method for
their further usage as a photocatalytic selective layer in ceramic membranes. The study of the
peculiarities of the photocatalytic materials synthesis for the creation of photocatalytic and at the
same time antimicrobial ceramic membranes on their basis is extremely relevant, because it will
allow to develop a method of synthesis of photocatalysts active to various pollutants. Therefore, the
aim of the work was the synthesis of TiO2 powders by solvothermal method at different ratios of the
starting reagents, the study of their physicochemical properties and the study of their photocatalytic
properties in relation to different pollutant – antibiotics and dyes. The obtained powders were
characterized by diffraction analysis, infrared spectroscopy, low-temperature nitrogen adsorptiondesorption and scanning electron microscopy. It is established that the ratio of the initial
components significantly affects the final properties and characteristics of TiO2 powders. It was
shown that the synthesis with a significant excess of the starting reagent (titanium isopropoxide)
does not lead to the crystalline TiO2 sample, which was confirmed by diffraction analysis and
infrared spectroscopy. The revealed porous structure of all TiO2 samples indicates a high specific
surface area in them, which is also consistent with scanning electron microscopy studies. The
highest photocatalytic activity is possessed by TiO2 samples, which are nanocomposites of anatase
and rutile modifications. Such nanocomposites showed quite high activity towards antibiotics
(Biseptol) and anionic dyes (Congo red).
Опис
Ключові слова
antibiotics, dyes, ceramic membranes, photocatalytic properties, solvothermal synthesis, titanium (IV) oxide, антибіотики, барвники, керамічні мембрани, титан (IV) оксид, сольвотермальний синтез, фотокаталітичні властивості
Бібліографічний опис
Aleksyk, A. Synthesis of TIO2 by solvothermal method and its photocatalytic activity towards Biseptol and Congo red / A. Aleksyk, O. Yanushevska, T. Dontsova // Вода і водоочисні технології. Науково-технічні вісті. – 2022. – № 2(33). – С. 15-24.