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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">vuzbiochemi</journal-id><journal-title-group><journal-title xml:lang="ru">Известия вузов. Прикладная химия и биотехнология</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of Universities. Applied Chemistry and Biotechnology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2227-2925</issn><issn pub-type="epub">2500-1558</issn><publisher><publisher-name>ИРНИТУ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21285/2227-2925-2022-12-2-208-221</article-id><article-id custom-type="elpub" pub-id-type="custom">vuzbiochemi-806</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>ХИМИЧЕСКИЕ НАУКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CHEMICAL SCIENCES</subject></subj-group></article-categories><title-group><article-title>Влияние превращений метилметакрилата при фотокатализе в присутствии RbTe1,5W0,5O6 на изменение поверхности сложного оксида</article-title><trans-title-group xml:lang="en"><trans-title>The effect of methyl methacrylate transformations during photocatalysis in the presence of RbTe1.5W0.5O6 on the change of the complex oxide surface</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8038-8441</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Часова</surname><given-names>В. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Chasova</surname><given-names>V. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>В. О. Часова, младший научный сотрудник</p><p>603950, г. Нижний Новгород</p></bio><bio xml:lang="en"><p>Victoria O. Chasova, Junior Researcher</p><p>23, Gagarin Ave., 603950, Nizhny Novgorod</p></bio><email xlink:type="simple">tchasowa.vika@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/0000-0001-8375-6863</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фукина</surname><given-names>Д. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Fukina</surname><given-names>D. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Д. Г. Фукина, к.х.н., научный сотрудник,603950, г. Нижний Новгород, пр-т Гагарина, 23</p></bio><bio xml:lang="en"><p>Diana G. Fukina, Cand. Sci. (Chemistry), Researcher</p><p>23, Gagarin Ave., 603950, Nizhny Novgorod</p></bio><email xlink:type="simple">dianafuk@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/0000-0002-8674-5315</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Боряков</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Boryakov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>А. В. Боряков, к.ф.-м.н., научный сотрудник603950, г. Нижний Новгород, пр-т Гагарина, 23</p></bio><bio xml:lang="en"><p>Alexey V. Boryakov, Cand. Sci. (Physics and Mathematics), Researcher</p><p>23, Gagarin Ave., 603950, Nizhny Novgorod</p></bio><email xlink:type="simple">albrv@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/0000-0001-5577-7456</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Жижин</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhizhin</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Е. В. Жижин, к.ф.-м.н., заместитель директора ресурсного центра199034, г. Санкт-Петербург, Университетский пр., 7/9</p></bio><bio xml:lang="en"><p>Evgeny V. Zhizhin, Cand. Sci. (Physics and Mathematics)</p><p>7/9, Universitetskaya Emb., 199034, St.-Petersburg</p></bio><email xlink:type="simple">evgeny_liquid@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5899-0436</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Королева</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Koroleva</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>А. В. Королева, инженер-исследователь199034, г. Санкт-Петербург, Университетский пр., 7/9</p></bio><bio xml:lang="en"><p>Alexandra V. Koroleva, Research Engineer</p><p>7/9, Universitetskaya Emb., 199034, St.-Petersburg</p></bio><email xlink:type="simple">dalika@inbox.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3413-2899</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Семенычева</surname><given-names>Л. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Semenycheva</surname><given-names>L. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Л. Л. Семенычева, д.х.н., старший научный сотрудник</p><p>603950, г. Нижний Новгород, пр-т Гагарина, 23</p></bio><bio xml:lang="en"><p>Lyudmila L. Semenycheva, Dr. Sci. (Chemistry), Senior Researcher</p><p>23, Gagarin Ave, 603950, Nizhny Novgorod</p></bio><email xlink:type="simple">llsem@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сулейманов</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Suleimanov</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Е. В. Сулейманов, д.х.н., профессор, директор научно-исследовательского института603950, г. Нижний Новгород, пр-т Гагарина, 23</p></bio><bio xml:lang="en"><p>Evgeny V. Suleimanov, Dr. Sci. (Chemistry), Professor</p><p>23, Gagarin Ave, 603950, Nizhny Novgorod</p></bio><email xlink:type="simple">suev@unn.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Нижегородский государственный университет им. Н. И. Лобачевского</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lobachevsky State University of Nizhny Novgorod</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Санкт-Петербургский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>St. Petersburg University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>04</day><month>07</month><year>2022</year></pub-date><volume>12</volume><issue>2</issue><fpage>208</fpage><lpage>221</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Часова В.О., Фукина Д.Г., Боряков А.В., Жижин Е.В., Королева А.В., Семенычева Л.Л., Сулейманов Е.В., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Часова В.О., Фукина Д.Г., Боряков А.В., Жижин Е.В., Королева А.В., Семенычева Л.Л., Сулейманов Е.В.</copyright-holder><copyright-holder xml:lang="en">Chasova V.O., Fukina D.G., Boryakov A.V., Zhizhin E.V., Koroleva A.V., Semenycheva L.L., Suleimanov E.V.</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://vuzbiochemi.elpub.ru/jour/article/view/806">https://vuzbiochemi.elpub.ru/jour/article/view/806</self-uri><abstract><p>Изучены особенности изменения поверхности фотокатализатора RbTe1,5W0,5O6 в полимеризационных процессах с участием метилметакрилата (ММА) при облучении видимым светом λ=400–700 нм и температуре 20–25 °С, а также условия регенерации для его повторного применения. Реализация той или иной химической реакции в смеси фотокатализатора и мономера определяется ее кинетическими параметрами и концентрацией реагирующих частиц. Образование OH• радикалов, активных в радикальной полимеризации, происходит в этом случае как при взаимодействии с адсорбированными на поверхности молекулами воды, так и в объеме раствора, а также при восстановлении растворенного в воде кислорода. В связи с тем, что гидроксильный радикал обладает высокой реакционной способностью, можно было ожидать активный процесс радикальной полимеризации ММА. Однако образование ПММА в рассматриваемой реакции проходит с низкой конверсией – наблюдается образование 5–10% полимера, что связано с изменениями на поверхности сложного оксида RbTe1,5W0,5O6 в процессе реакции. Для исследования поверхности катализатора были использованы методы сканирующей электронной микроскопии (СЭМ) и рентгеновской фотоэлектронной спектроскопии (РФЭС). После реакции на поверхности катализатора было обнаружено присутствие органических и полимерных субстратов. В результате обработки катализатора ультразвуком в водной эмульсии макромолекулы полимера не идентифицируются на поверхности, но представлены химически адсорбированные мономер и олигомеры, образующиеся при разрушении полимера ультразвуком. Другие способы очистки поверхности катализатора путем промывки в различных растворах, таких как хлороформ и тетрагидрофуран, также неэффективны и вызывают превращения адсорбатов на поверхности. Это приводит к снижению активности катализатора RbTe1,5W0,5O6 при повторной полимеризации. Таким образом, для успешной регенерации порошка катализатора требуется не только обработка ультразвуком, но и нагрев его при 300–400 °C для удаления органических субстратов.</p></abstract><trans-abstract xml:lang="en"><p>The features of the surface changes of the RbTe1.5W0.5O6 photocatalyst during polymerization processes involving methyl methacrylate (MMA) under irradiation with visible light λ= 400–700 nm at a temperature of 20–25 °C, as well as regeneration conditions for its reuse, have been studied. The realization of a chemical reaction in a mixture of a photocatalyst and a monomer is determined by its kinetic parameters and the concentration of reacting particles. The formation of OH• radicals, which are active in radical polymerization, occurs in this case by both ways: interacting between water molecules adsorbed on the surface, as well as during the recovery of oxygen dissolved in water. Due to the high reactivity of the hydroxyl radical, an active process of radical polymerization of MMA could be expected. However, the formation of polymethyl methacrylate (PMMA) in the reaction takes place with a low conversion – the formation of 5–10% polymer, which is related to changes on the surface of the complex oxide RbTe1.5W0.5O6 during the reaction. Scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) methods have been used to investigate the catalyst surface. The presence of organic and polymer substrates was revealed on the catalyst surface after the reaction. As a result of the catalyst treatment by ultrasound in an aqueous emulsion, polymer macromolecules are not identified on the surface, but chemically adsorbed monomer and oligomers formed under the ultrasound destruction of the polymer are presented. Other methods of cleaning the catalyst surface by washing in different solutions as chloroform and tetrahydrofuran also are not effective and cause the adsorbates transformations on the surface. It leads to decreasing the RbTe1.5W0.5O6 catalyst's activity for repeated polymerization. Thus, to successful regeneration of the catalyst's powder not only ultrasound treatment is required, but also heating it at 300–400 °C to remove organic substrates.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>фотокатализ</kwd><kwd>β-пирохлор</kwd><kwd>комплексный оксид RbTe1</kwd><kwd>5W0</kwd><kwd>5O6</kwd><kwd>эмульсионная полимеризация</kwd><kwd>рентгеновская фотоэлектронная спектроскопия</kwd><kwd>сканирующая электронная микроскопия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>photocatalysis</kwd><kwd>β-pyrochlore</kwd><kwd>complex oxide RbTe1.5W0.5O6</kwd><kwd>emulsion polymerization</kwd><kwd>X-ray photoelectron spectroscopy</kwd><kwd>scanning electron microscopy</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Tavakoli-Azar T., Mahjoub A. R., Sadjadi M. S., Farhadyar N., Sadr M. H. 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