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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Kinetics and Catalysis</journal-id><journal-title-group><journal-title xml:lang="en">Kinetics and Catalysis</journal-title><trans-title-group xml:lang="ru"><trans-title>Кинетика и катализ</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0453-8811</issn><issn publication-format="electronic">3034-5413</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">689886</article-id><article-id pub-id-type="doi">10.31857/S0453881125020054</article-id><article-id pub-id-type="edn">SKQUJR</article-id><article-categories><subj-group subj-group-type="toc-heading"><subject>VIII Международная научная школа-конференция молодых ученых “Катализ: от науки к промышленности” (30 сентября–3 октября 2024 г., Томск)</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Catalytic properties of a nanozyme based on silver nanoparticles immobilized in a polymethacrylate matrix</article-title><trans-title-group xml:lang="ru"><trans-title>Каталитические свойства нанозима на основе наночастиц серебра, иммобилизованных в полиметакрилатную матрицу</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bragina</surname><given-names>S. K.</given-names></name><name xml:lang="ru"><surname>Брагина</surname><given-names>С. К.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>braginask@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gavrilenko</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Гавриленко</surname><given-names>Н. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>braginask@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Saranchina</surname><given-names>N. V.</given-names></name><name xml:lang="ru"><surname>Саранчина</surname><given-names>Н. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>braginask@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gavrilenko</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Гавриленко</surname><given-names>М. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>braginask@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">National Research Tomsk State University</institution></aff><aff><institution xml:lang="ru">Национальный исследовательский Томский государственный университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">National Research Tomsk Polytechnic University</institution></aff><aff><institution xml:lang="ru">Национальный исследовательский Томский политехнический университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-09-04" publication-format="electronic"><day>04</day><month>09</month><year>2025</year></pub-date><volume>66</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>116</fpage><lpage>125</lpage><history><date date-type="received" iso-8601-date="2025-08-26"><day>26</day><month>08</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-08-26"><day>26</day><month>08</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Российская академия наук</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0453-8811/article/view/689886">https://journals.eco-vector.com/0453-8811/article/view/689886</self-uri><abstract xml:lang="en"><p>This article presents studies on the catalytic, peroxidase-like properties of silver nanoparticles (Ag NPs) immobilized in polymethacrylate matrix (PMM). Ag NPs were prepared by thermal reduction of silver cations pre-immobilized in PMM. The morphology of the nanocomposite was studied using scanning electron microscopy, and the average size of the synthesized individual spherical nanoparticles was 18 ± 5 nm. It was demonstrated that silver nanoparticles immobilized in a polymethacrylate matrix (PMM-Ag<sup>0</sup>) exhibit pronounced peroxidase-like activity in the oxidation reaction of the chromogenic substrate – indigocarmine in the presence of H₂O₂. The Michaelis–Menten model was used to assess the kinetic parameters of the reaction. The values of Michaelis constant (<italic>K</italic><sub>m</sub>) observed for indigocarmine and H₂O₂ (0.1 mM and 1.0 mM, respectively) show strong affinity of the substrates to silver nanoparticles in PMM.</p></abstract><trans-abstract xml:lang="ru"><p>Исследованы каталитические, подобные пероксидазе, свойства наночастиц серебра (НЧ Ag), иммобилизованных в полиметакрилатную матрицу (ПММ). НЧ Ag получены путем термического восстановления предварительно иммобилизованных в ПММ катионов серебра. Морфология нанокомпозита изучена методом сканирующей электронной микроскопии (СЭМ), средний размер синтезированных индивидуальных сферических наночастиц составил 18 ± 5 нм. Показано, что наночастицы серебра, иммобилизованные в полиметакрилатную матрицу (ПММ-Ag<sup>0</sup>), обладают ярко выраженной пероксидазоподобной активностью в реакции окисления хромогенного субстрата – индигокармина – под действием H<sub>2</sub>O<sub>2</sub>. Для оценки кинетических параметров реакции использована модель Михаэлиса–Ментен. Значения констант Михаэлиса (<italic>K</italic><sub>m</sub>), 0.1 и 1.0 мМ для индигокармина и H<sub>2</sub>O<sub>2</sub> соответственно, свидетельствуют о сильном сродстве субстратов к наночастицам серебра в ПММ.</p></trans-abstract><kwd-group xml:lang="en"><kwd>silver nanoparticles</kwd><kwd>polymethacrylate</kwd><kwd>peroxidase-like activity</kwd><kwd>nanozyme</kwd><kwd>glucose detection</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>наночастицы серебра</kwd><kwd>полиметакрилат</kwd><kwd>пероксидазоподобная активность</kwd><kwd>нанозим</kwd><kwd>определение глюкозы</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Российский научный фонд</institution></institution-wrap><institution-wrap><institution xml:lang="en">Russian Science Foundation</institution></institution-wrap></funding-source><award-id>24-24-00160</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Zhang R., Yan X., Fan K. // Acc. 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