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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">techusgu</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Юго-Западного государственного университета. Серия: Техника и технологии</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Southwest State University. Series: Engineering and Technology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2223-1528</issn><publisher><publisher-name>Юго-Западный государственный университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21869/2223-1528-2021-11-4-108-122</article-id><article-id custom-type="elpub" pub-id-type="custom">techusgu-84</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ФИЗИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS</subject></subj-group></article-categories><title-group><article-title>Характеризация и фотокаталитические свойства синтезированных при низких температурах наночастиц  диоксида титана</article-title><trans-title-group xml:lang="en"><trans-title>Characterization and Photocatalytic Properties of Titanium Dioxide  Nanoparticles at Low Synthesis Temperatures</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7085-8913</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Егельский</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Egelskii</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Егельский Илья Викторович, аспирант  кафедры нанотехнологий, микроэлектроники, общей и прикладной физики</p><p>ул. 50 лет Октября 94, г. Курск 305040</p></bio><bio xml:lang="en"><p>Ilia V. Egelskii, Post-Graduate Student of the  Department of the of Nanotechnology, Microelectronics and Engineering Physics</p><p>50 Let Oktyabrya str. 94, Kursk 305040</p></bio><email xlink:type="simple">ive1996@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5004-0823</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пугачевский</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Pugachevskii</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пугачевский Максим Александрович,  доктор физико-математических наук, ведущий научный сотрудник Регионального центра нанотехнологий</p><p>ул. 50 лет Октября 94, г. Курск 305040</p></bio><bio xml:lang="en"><p>Maksim A. Pugachevskii, Dr. of Sci. (Physics and Mathematics), Leading Researcher of the  Regional Center of Nanotechnology</p><p>50 Let Oktyabrya str. 94, Kursk 305040</p></bio><email xlink:type="simple">pmaximal@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0592-3851</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мамонтов</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Mamontov</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мамонтов Владимир Александрович,  магистрант кафедры нанотехнологий, общей  и прикладной физики</p><p>ул. 50 лет Октября 94, г. Курск 305040</p></bio><bio xml:lang="en"><p>Vladimir A. Mamontov, Undergraduate of the Department of the of Nanotechnology and Engineering Physics</p><p>50 Let Oktyabrya str. 94, Kursk 305040</p></bio><email xlink:type="simple">vladimir-mamontov2013@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0370-2465</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Миргород</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Mirgorod</surname><given-names>Yu.  A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Миргород Юрий Александрович, доктор  химических наук, ведущий научный сотрудник Регионального центра нанотехнологий</p><p>ул. 50 лет Октября 94, г. Курск 305040</p></bio><bio xml:lang="en"><p>Yuriy A. Mirgorod, Dr. of Sci. (Chemistry), Leading Researcher of the Regional Center of Nanotechnology</p><p>50 Let Oktyabrya str. 94, Kursk 305040</p></bio><email xlink:type="simple">yu_mirgorod@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Юго-Западный государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Southwest State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>28</day><month>04</month><year>2023</year></pub-date><volume>11</volume><issue>4</issue><fpage>108</fpage><lpage>122</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Егельский И.В., Пугачевский М.А., Мамонтов В.А., Миргород Ю.А., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Егельский И.В., Пугачевский М.А., Мамонтов В.А., Миргород Ю.А.</copyright-holder><copyright-holder xml:lang="en">Egelskii I.V., Pugachevskii M.A., Mamontov V.A., Mirgorod Y.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://techusgu.elpub.ru/jour/article/view/84">https://techusgu.elpub.ru/jour/article/view/84</self-uri><abstract><sec><title>Цель исследования</title><p>Цель исследования. Определение размерных характеристик, элементного, фазового и химического состава наночастиц диоксида титана, синтезированных гидротермальным методом, при использовании низких температур до 100°С, а также исследование их фотокаталитической активности. </p></sec><sec><title>Методы</title><p>Методы. Характеризация синтезированных наночастиц диоксида титана с помощью сканирующей электронной микроскопии с приставкой энергодисперсионного анализа, структурного химического анализа с применением инфракрасной Фурье-спектроскопии с целью выявления органических примесей и определения эффективных способов декарбонизации путем сравнения результатов анализа образцов после промывания различными полярными и неполярными растворителями и отжига; изучение фотокаталитической активности синтезированных наночастиц на примере фотодеградации раствора метиленового синего. </p></sec><sec><title>Результаты</title><p>Результаты. Гидротермальным методом синтеза при использовании низких температур с последующим промыванием полярными и неполярными растворителями и последующим термическим отжигом были получены частицы диоксида титана в виде нанопорошка. Согласно спектральному анализу и данным сканирующей электронной микроскопии после промывания растворителями и декарбонизации (путем отжига) достигается снижение примесей углеродистых соединений в веществе с 68% до 4%. Обнаружено, что синтезированные частицы обладают средним размером 24 нм. Доказана высокая фотокаталитическая активность синтезированных наночастиц в реакции деградации красителя метиленового синего при ультрафиолетовом облучении. </p></sec><sec><title>Заключение</title><p>Заключение. В результате комплексного анализа наноинструментальными методами была проведена характеризация наночастиц диоксида титана, полученных гидротермальным методом при низких температурных режимах до 100°С. Доказана эффективность комбинированного промывания полярными и неполярными растворителями от органических остатков, а также термического отжига. Наночастицы проявляют высокую фотокаталитическую активность в процессах фотодеградации метиленового синего при ультрафиолетовом облучении. Возрастание скорости реакции фотокатализа достигается увеличением концентрации частиц в растворе и уменьшением их размера. </p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Purpose of the study</title><p>Purpose of the study. Determination of the dimensional characteristics, elemental, phase and chemical composition of titanium dioxide nanoparticles synthesized by the hydrothermal method using low temperatures up to 100 ° C, as well as the study of their photocatalytic activity. </p></sec><sec><title>Methods</title><p>Methods. Сharacterization of titanium dioxide nanoparticles synthesized at low-temperature conditions using scanning electron microscopy with an energy dispersive analysis attachment, structural chemical analysis using infrared Fourier spectroscopy to identify organic impurities, and determine efficient decarbonization methods by comparing the analysis results of samples after washing with different polar and non-polar solvents; a study of the photocatalytic activity of synthesized powders of titanium dioxide nanoparticles using the example of photodegradation of methylene blue solution depending on the concentration and the size characteristics of the particles. </p></sec><sec><title>Results</title><p>Results. Titanium dioxide particles in the form of nanopowder were obtained by the hydrothermal synthesis method using low temperatures followed by washing with polar and non-polar solvents and subsequent thermal annealing. According to spectral analysis and scanning electron microscopy data, after washing with solvents and the decarbonization methods used, a decrease in impurities of carbon compounds in the substance from 68% to 4% is achieved. The synthesized particles had spherical and ellipsoidal shapes with an average size of 24 nm. The high photocatalytic activity of the synthesized nanoparticles was proved by the example of methylene blue degradation under ultraviolet radiation. </p></sec><sec><title>Conclusion</title><p>Conclusion. As a result of complex analysis by nanoinstrumental methods, titanium dioxide nanoparticles obtained by the hydrothermal method at low-temperature conditions up to 100 °C were characterized. The particles have an average size of 24 nm and a rounded shape. The efficiency of combined washing from organic impurities with polar and non-polar solvents and thermal annealing of the synthesized samples for decarbonization has been proven. Upon annealing, the anatase structure of the crystal lattice was preserved. Nanoparticles exhibit high photocatalytic activity in the photodegradation of methylene blue under ultraviolet irradiation. Acceleration of the reaction rate of photocatalysis contributes to the achievement of concentration in the solution and a decrease in their size. </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>диоксид титана</kwd><kwd>гидротермальный синтез</kwd><kwd>режим низких температур</kwd><kwd>наночастицы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>titanium dioxide</kwd><kwd>hydrothermal synthesis</kwd><kwd>low temperature regime</kwd><kwd>nanoparticles</kwd><kwd>photocatalytic activity</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при финансовой поддержке РФФИ в рамках научного проекта   № 20-02-00599. Работа выполнена также при поддержке Министерства образования и науки РФ (г/з 2020 № 0851-2020-0035), в рамках реализации программы стратегического академического лидерства «Приоритет-2030» (Соглашения № 075-15-2021-1155 и № 075-15-2021-1213).</funding-statement><funding-statement xml:lang="en">The reported study was funded by RFBR, project number 20-02-00599 А. This work was also supported by the Ministry of Education and Science of the Russian Federation (state assignment 2020 No. 0851-2020-0035 and as part of the implementation of the program of strategic academic leadership "Prioritet-2030" (Agreements No. 075-152021-1155 and No. 075-15-2021-1213).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Mesoporous films prepared from synthesized TiO2 nanoparticles and their application in dye-sensitized solar cells (DSSCs) / N. Tasić, U. Lačnjevac, G. 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