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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">kaz29</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Казахстанско-Британского технического университета</journal-title><trans-title-group xml:lang="en"><trans-title>Herald of the Kazakh-British Technical University</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-6688</issn><issn pub-type="epub">2959-8109</issn><publisher><publisher-name>Казахстанско-Британский Технический Университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.55452/1998-6688-2026-23-3-378-387</article-id><article-id custom-type="elpub" pub-id-type="custom">kaz29-3199</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>ФИЗИЧЕСКИЕ НАУКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICAL SCIENCES</subject></subj-group></article-categories><title-group><article-title>СИНТЕЗ И ФОТОКАТАЛИТИЧЕСКАЯ АКТИВНОСТЬ ИЕРАРХИЧЕСКОГО ЦВЕТКОПОДОБНОГО ZNO ДЛЯ ДЕГРАДАЦИИ МЕТИЛЕНОВОГО СИНЕГО ПОД ДЕЙСТВИЕМ УФ-ИЗЛУЧЕНИЯ</article-title><trans-title-group xml:lang="en"><trans-title>SYNTHESIS AND PHOTOCATALYTIC ACTIVITY OF HIERARCHICAL FLOWER-LIKE ZNO FOR METHYLENE BLUE DEGRADATION UNDER UV LIGHT</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-0247-9041</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Абдуллаева</surname><given-names>К.</given-names></name><name name-style="western" xml:lang="en"><surname>Abdullayeva</surname><given-names>K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Студент</p><p>Астана</p></bio><bio xml:lang="en"><p>BSc student</p><p>Astana</p></bio><email xlink:type="simple">kamila.abdullayeva@nu.edu.kz</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5173-6515</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рүстембекқызы</surname><given-names>К.</given-names></name><name name-style="western" xml:lang="en"><surname>Rustembekkyzy</surname><given-names>K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Магистр</p><p>Астана</p></bio><bio xml:lang="en"><p>MSc</p><p>Astana</p></bio><email xlink:type="simple">kuralay.rustembekkyzy@nu.edu.kz</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1052-8533</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Канафин</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Kanafin</surname><given-names>Y. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>PhD</p><p>Астана</p></bio><bio xml:lang="en"><p>PhD</p><p>Astana</p></bio><email xlink:type="simple">yerkanat.kanafin@nu.edu.kz</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1696-6953</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кайканов</surname><given-names>М.</given-names></name><name name-style="western" xml:lang="en"><surname>Kaikanov</surname><given-names>M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>PhD</p><p>Астана</p></bio><bio xml:lang="en"><p>PhD</p><p>Astana</p></bio><email xlink:type="simple">marat.kaikanov@nu.edu.kz</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Назарбаев Университет</institution><country>Казахстан</country></aff><aff xml:lang="en"><institution>Nazarbayev University</institution><country>Kazakhstan</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Назарбаев Университет;&#13;
Институт функциональных материалов</institution><country>Казахстан</country></aff><aff xml:lang="en"><institution>Nazarbayev University;&#13;
Institute of Functional Materials</institution><country>Kazakhstan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>26</day><month>09</month><year>2026</year></pub-date><volume>23</volume><issue>3</issue><fpage>378</fpage><lpage>387</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Абдуллаева К., Рүстембекқызы К., Канафин Е.Н., Кайканов М., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Абдуллаева К., Рүстембекқызы К., Канафин Е.Н., Кайканов М.</copyright-holder><copyright-holder xml:lang="en">Abdullayeva K., Rustembekkyzy K., Kanafin Y.N., Kaikanov M.</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://vestnik.kbtu.edu.kz/jour/article/view/3199">https://vestnik.kbtu.edu.kz/jour/article/view/3199</self-uri><abstract><p>В данной работе методом гидротермального синтеза с использованием мочевины и цетилтриметиламмоний бромида (CTAB) в качестве структурообразующих агентов была успешно получена пористая иерархическая цветкоподобная структура оксида цинка (ZnO), предназначенная для повышения фотокаталитической эффективности в процессах очистки окружающей среды. Структурная характеристика с использованием сканирующей электронной микроскопии (SEM) и рентгеновской дифракции (XRD) подтвердила формирование высококристаллической чистой гексагональной фазы вюрцита, состоящей из ультратонких нанолистов. Фотокаталитическая активность синтезированного ZnO была исследована на примере деградации красителя метиленового синего (MB) под воздействием ультрафиолетового излучения (365 нм). Катализатор обеспечил высокую степень разложения красителя – (98.7 ± 0.5)% за 40 минут, при этом процесс подчинялся кинетической модели псевдопервого порядка с константой скорости реакции 0.109 мин-1. Исследования по оптимизации показали, что дозировка катализатора 0.2 г/л является близкой к оптимальной. Тесты на совместное присутствие ионов продемонстрировали высокую стабильность системы и эффективность удаления загрязнителя в присутствии различных конкурирующих анионов окружающей среды (Cl- , NO3 - , HCO3 - , CO3 2-). Исследования с использованием ловушек активных частиц выявили выраженную иерархию ингибирования, показав, что механизм деградации преимущественно определяется окислением с участием гидроксильных радикалов (•OH), при дополнительном вкладе фотогенерированных дырок (h+ ). Полученные результаты свидетельствуют о том, что синтезированная пористая архитектура ZnO является высокоэффективным, стабильным и экологически устойчивым материалом для удаления стойких органических загрязнителей из коммунальных сточных вод.</p></abstract><trans-abstract xml:lang="en"><p>In this study, a porous, hierarchical flower-like zinc oxide (ZnO) structure was successfully synthesized via a hydrothermal method using urea and CTAB as shape-directing agents to optimize photocatalytic efficiency for environmental remediation. Structural characterization via scanning electron microscopy (SEM) and X-ray diffraction (XRD) confirmed the formation of a highly crystalline, pure hexagonal wurtzite phase assembled from ultrathin nanosheet building blocks. The photocatalytic performance of the synthesized ZnO was evaluated through the degradation of methylene blue (MB) dye under UV light illumination (365 nm). The catalyst achieved a (98.7 ± 0.5)% degradation efficiency within 40 minutes, following a pseudo-first-order kinetic model with a reaction rate constant of 0.109 min-1. Optimization studies identified a catalyst dosage of 0.2 g/L as near-optimal, while coexistence tests demonstrated that the system maintains high stability and excellent removal efficiency in the presence of various competing environmental anions (Cl- , NO3 - , HCO3 - , CO3 2-). Radical scavenger investigations revealed a clear inhibition hierarchy, establishing that the degradation mechanism is predominantly driven by hydroxyl radical-mediated oxidation alongside secondary contributions from photogenerated holes. These findings highlight the prepared porous ZnO architecture as an efficient, stable, and sustainable candidate for the degradation of persistent organic pollutants in municipal wastewater.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>оксид цинка</kwd><kwd>гидротермальный синтез</kwd><kwd>метиленовый синий</kwd><kwd>фотокаталитическая деградация</kwd><kwd>иерархические наноструктуры</kwd></kwd-group><kwd-group xml:lang="en"><kwd>zinc oxide</kwd><kwd>hydrothermal synthesis</kwd><kwd>methylene blue</kwd><kwd>photocatalytic degradation</kwd><kwd>hierarchical nanostructures</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This research has been funded by the Committee of Science of the Ministry of Science and Higher Education of the Republic of Kazakhstan (Grant No. BR28712489)</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">Masuleh, M.T., Hasheminiasari, M., Ashiri, R. 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