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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">10.21869/2223-1528-2025-15-1-123-134</article-id><article-id custom-type="elpub" pub-id-type="custom">techusgu-314</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>Влияние высокотемпературного отжига на электронную структуру и антиоксидантные свойства аблированных наночастиц диоксида церия</article-title><trans-title-group xml:lang="en"><trans-title>Effect of high temperature annealing on the electronic structure and antioxidant properties of ablated Cerium dioxide nanoparticles</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0592-3851</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. А.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мамонтов Владимир Александрович, аспирант кафедры нанотехнологий, микроэлектроники, общей и прикладной физики</p><p>г. Курск</p></bio><bio xml:lang="en"><p>Vladimir A. Mamontov, Post-Graduate Student of the Department of Nanotechnology, Microelectronics, General and Applied Physics</p><p>Kursk</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/0000-0002-5004-0823</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, профессор кафедры нанотехнологий, микроэлектроники, общей и прикладной физики, директор Регионального центра нанотехнологий</p><p>г. Курск</p></bio><bio xml:lang="en"><p>Maksim A. Pugachevskii, Doctor of Sciences (Physics and Mathematics), Professor at the Department of Nanotechnology, Microelectronics and Engineering Physics, Director of the Regional Center of Nanotechnology</p><p>Kursk</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/0000-0001-8110-9929</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сизов</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Sizov</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сизов Александр Семёнович, доктор технических наук, профессор кафедры информационных систем и технологий</p><p>г. Курск</p></bio><bio xml:lang="en"><p>Alexander S. Sizov, Doctor of Sciences (Engeenering), Professor of the Department of Information Systems and Technologies</p><p>Kursk</p></bio><email xlink:type="simple">sizov@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/0000-0002-8087-874X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Неручев</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Neruchev</surname><given-names>Yu. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Неручев Юрий Анатольевич, доктор физико-математических наук, профессор кафедры физики и нанотехнологий, научный руководитель научно-исследовательского центра физики конденсированного состояния</p><p>г. Курск</p></bio><bio xml:lang="en"><p>Yury A. Neruchev, Doctor of Sciences (Physics and Mathematics), Professor of the Department of Physics and Nanotechnology, Scientific Supervisor of the Research Center for Condensed Matter Physics</p><p>Kursk</p></bio><email xlink:type="simple">yuan2003@mail.ru</email><xref ref-type="aff" rid="aff-2"/></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><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Курский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kursk State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>07</day><month>04</month><year>2025</year></pub-date><volume>15</volume><issue>1</issue><fpage>123</fpage><lpage>134</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мамонтов В.А., Пугачевский М.А., Сизов А.С., Неручев Ю.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Мамонтов В.А., Пугачевский М.А., Сизов А.С., Неручев Ю.А.</copyright-holder><copyright-holder xml:lang="en">Mamontov V.А., Pugachevskii M.A., Sizov A.S., Neruchev 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/314">https://techusgu.elpub.ru/jour/article/view/314</self-uri><abstract><p>Цель. Исследование зависимости электронной структуры и антиоксидантных свойств аблированных наночастиц диоксида церия от температуры отжига в условиях фотокаталитической реакции в присутствии наночастиц диоксида титана.Методы. Были получены наночастицы диоксида церия методом лазерной абляции. По АСМ-изображениям рассчитаны средние размеры аблированных наночастиц диоксида церия, подвергнутых центрифугированию и высокотемпературному отжигу. Спектрофотометрическим методом установливалось изменение энергетического положения 4f0 состояний ионов Ce4+в полосе пропускания ширины запрещённой зоны отожжённых наночастиц диоксида церия и исследовалась их седиментация. Также с помощью спектрофотометра определялась зависимость от температуры отжига антиоксидантной активности наночастиц диоксида церия в процессе фотокатализа.Результаты. Установлены средние размеры аблированных отожжённых центрифугированных наночастиц диоксида церия в диапазоне от (46,3±0,5) нм до (82,8±0,5) нм. В результате исследований определён батохромный сдвиг энергетического положения 4f0 состояний ионов Ce4+ в полосе пропускания ширины запрещённой зоны аблированных наночастиц диоксида церия после отжига, а его влияние на процесс седиментации наночастиц не выявлен. Установлено, что в ходе фотокаталитической реакции в присутствии аблированных отожжённых наночастиц диоксида церия увеличивается скорость деградации красителя метиленового синего, то есть снижается антиоксидантная активность наночастиц CeO2.Заключение. Из результатов исследований, представленных в данной работе, следует, что под воздействием высокотемпературного отжига физико-химические свойства аблированных наночастиц диоксида церия меняются, в частности снижается их антиоксидантная активность, но скорость седиментации наночастиц диоксида церия в водном растворе остается постоянной. </p></abstract><trans-abstract xml:lang="en"><p>Purpose. Study of the dependence of the electronic structure and antioxidant properties of ablated cerium dioxide nanoparticles on the annealing temperature under photocatalytic reaction conditions in the presence of titanium dioxide nanoparticles.Methods. Nanoparticles of cerium dioxide were obtained by laser ablation. The average sizes of ablated nanoparticles of cerium dioxide subjected to centrifugation and high-temperature annealing were calculated from AFM images. A change in the electronic structure of annealing was detected by spectrophotometry, and sedimentation of annealed nanoparticles was studied. Also, the dependence of the antioxidant activity of cerium dioxide nanoparticles on the annealing temperature in the photocatalysis process was determined using a spectrophotometer.Results. The average sizes of ablated annealed centrifuged cerium dioxide nanoparticles were determined to be in the range from 46,3±0,5 nm to 82,8±0,5 nm. The studies revealed a bathochromic shift in the energy position of the 4f0 states of Ce4+ ions in the bandwidth of the bandgap of annealed cerium dioxide nanoparticles after annealing, and its effect on the sedimentation process of nanoparticles was not revealed. It was found that during the photocatalytic reaction in the presence of ablated annealed cerium dioxide nanoparticles, the degradation rate of the methylene blue dye increases, i.e., the antioxidant activity of CeO2 nanoparticles decreases.Conclusion: From the results of the studies presented in this paper it follows that under the influence of high-temperature annealing the physicochemical properties of ablated cerium dioxide nanoparticles change, in particular, their antioxidant activity decreases, but the sedimentation rate of nanoparticles in an aqueous solution remains constant.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>наночастицы</kwd><kwd>диоксид церия</kwd><kwd>лазерная абляция</kwd><kwd>электронная структура</kwd><kwd>спектрофотометрия</kwd><kwd>антиоксидантные свойства</kwd><kwd>фотокатализ</kwd></kwd-group><kwd-group xml:lang="en"><kwd>nanoparticles</kwd><kwd>Cerium dioxide</kwd><kwd>laser ablation</kwd><kwd>electronic structure</kwd><kwd>spectrophotometry</kwd><kwd>antioxidant properties</kwd><kwd>photocatalysis</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при финансовой поддержке Министерства науки и высшего образования Российской Федерации (с/о № 075-03–2025–526) и в рамках Программы «Приоритет 2030» (Соглашение № 075-15-2021-1213).</funding-statement><funding-statement xml:lang="en">The study was carried out with the financial support of the Ministry of Science and Higher Education of the Russian Federation (contract No. 075-03–2025–526) and within the framework of the Priority 2030 Program (Agreement 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">Transformation of Cerium oxide nanoparticles from a diesel fuel additive during combustion in a diesel engine / J.G. 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