<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" article-type="research-article" dtd-version="1.2" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of Physical Chemistry</journal-id><journal-title-group><journal-title>Russian Journal of Physical Chemistry</journal-title></journal-title-group><issn publication-format="print">0044-4537</issn><issn publication-format="electronic">3034-5537</issn><publisher><publisher-name>Russian Academy of Science</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.7868/S3034553780044453725060157</article-id><title-group><article-title>PHOTOCATALYTIC OXIDATIVE DEGRADATION OF DICLOFENAC IN WATER USING IRON-CONTAINING METAL-CERAMIC COMPOSITES UNDER IRRADIATION AND OZONATION CONDITIONS</article-title><trans-title-group xml:lang="ru"><trans-title>ФОТОКАТАЛИТИЧЕСКАЯ ОКИСЛИТЕЛЬНАЯ ДЕСТРУКЦИЯ ДИКЛОФЕНАКА В ВОДЕ С ПРИМЕНЕНИЕМ ЖЕЛЕЗОСОДЕРЖАЩИХ МЕТАЛЛОКЕРАМИЧЕСКИХ КОМПОЗИТОВ В УСЛОВИЯХ ОБЛУЧЕНИЯ И ОЗОНИРОВАНИЯ</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid"></contrib-id><name-alternatives><name xml:lang="en"><surname>Makarova</surname><given-names>V.M.</given-names></name><name xml:lang="ru"><surname>Макарова</surname><given-names>В.М. </given-names></name></name-alternatives><email>valerym.a.c@yandex.ru</email><xref ref-type="aff" rid="aff-1"></xref><xref ref-type="aff" rid="aff-2"></xref></contrib></contrib-group><aff-alternatives id="aff-1"><aff><institution xml:lang="ru">Национальный исследовательский Томский государственный университет</institution><institution xml:lang="en">National Research Tomsk State University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff><institution xml:lang="ru"></institution><institution xml:lang="en"></institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-06-16" publication-format="electronic"><day>16</day><month>06</month><year>2025</year></pub-date><volume>99</volume><issue>6</issue><fpage>952</fpage><lpage>963</lpage><abstract xml:lang="en"><p>The photocatalytic activity of iron-containing silicon nitride-based metal-ceramic composites in the process of oxidative degradation of the pharmaceutical pollutant diclofenac (DCF) has been investigated. The composites were obtained by nitriding ferrosilicon without additives and ferrosilicon with shungite (modifier for SiC production) in combustion mode. It is noted that the use of urea allows to additionally modify the ceramic matrix of composites with semiconducting phases (FeO, CN) capable of absorption in the region of near-UV and visible light. The phase composition has been established, morphological features and optical properties of the composites have been studied. The acid-base properties of the surface have been evaluated. Adsorption and catalytic activity of composites in the absence and with HO addition under UV irradiation (Fenton photochemical process), under ozonation conditions under UV and visible light irradiation were studied. The highest degree of DCF degradation was found when heterogeneous photocatalysis and Fenton process were combined (84%) and under photocatalytic ozonation conditions (88%). The kinetics of photocatalytic degradation of DCF was investigated using a pseudo-first-order model. The degradation products of DCF were determined GC—MS.</p></abstract><trans-abstract xml:lang="ru"><p>Исследована фотокаталитическая активность железосодержащих металлокерамических композитов на основе нитрида кремния в процессе окислительной деградации фармацевтического загрязнителя диклофенака (DCF). Композиты получены при азотировании ферросилиция без добавок и ферросилиция с шунгитом (модификатор для получения SiC) в режиме горения. Отмечено, что использование мочевины позволяет дополнительно модифицировать керамическую матрицу композитов полупроводниковыми фазами (FeO, CN), способными поглощать в области ближнего УФ и видимого света. Установлен фазовый состав, изучены морфологические особенности и оптические свойства композитов. Проведена оценка кислотно-основных свойств поверхности. Изучена адсорбционная и каталитическая активность композитов в отсутствие и с добавкой HO при УФ-облучении (фотохимический процесс Фентона), в условиях озонирования при облучении УФ и видимым светом. Наибольшая степень деградации DCF установлена при совмещении гетерогенного фотокатализа и процесса Фентона (84%) и в условиях фотокаталитического озонирования (88%). Исследована кинетика фотокаталитической деградации DCF с использованием модели псевдо-первого порядка. Определены продукты деградации DCF методом ГХ-МС.</p></trans-abstract><kwd-group xml:lang="en"><kwd>железосодержащие металлокерамические композиты гетерогенный фотокатализ процесс Фентона фотокаталитическое озонирование диклофенак</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>железосодержащие металлокерамические композиты гетерогенный фотокатализ процесс Фентона фотокаталитическое озонирование диклофенак</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>B1</label><citation-alternatives><mixed-citation xml:lang="ru">Hernández-Tenorio R., González-Juárez E., Guzmán-Mar J.L. et al. // J. of Hazardous Materials Advances. 2022. V. 8. P. 100172. https://doi.org/10.1016/j.hazadv.2022.100172</mixed-citation><mixed-citation xml:lang="en"></mixed-citation></citation-alternatives></ref><ref id="B2"><label>B2</label><citation-alternatives><mixed-citation xml:lang="ru">O’Flynn, D., Lawler J., Yusuf A. et al. // Anal. Methods. 2021. V. 13. 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