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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">zhps</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал прикладной спектроскопии</journal-title><trans-title-group xml:lang="en"><trans-title>Zhurnal Prikladnoii Spektroskopii</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0514-7506</issn><publisher><publisher-name>B. I. Stepanov Institute of Physics of the National Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">zhps-1805</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>СПЕКТРОСКОПИЯ НАНОСТРУКТУР</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SPECTROSCOPY OF NANOSTRUCTURE</subject></subj-group></article-categories><title-group><article-title>Магнитные нанокомпозиты Fe3O4/FeOOH в качестве перспективной основы для процессов усовершенствованного окисления (фентоновской реакции)</article-title><trans-title-group xml:lang="en"><trans-title>Magnetic Nanocomposites Fe3O4/FeOOH as a Promising Basis for Advanced Oxidation Processes (Fenton Reaction)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мицкевич</surname><given-names>Е. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Mitskevich</surname><given-names>Y. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мицкевич Евгений Дмитриевич - студент физического факультета.</p><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><email xlink:type="simple">fcfvvv12@gmail.com</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>Дегтярик</surname><given-names>М. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Degtyarik</surname><given-names>M. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Харченко</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kharchanka</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бушинский</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bushinsky</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Федотова</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Fedotova</surname><given-names>Yu. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Воропай</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Voropay</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><xref ref-type="aff" rid="aff-5"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный университет; Учреждение БГУ “Научно-исследовательский институт ядерных проблем”</institution></aff><aff xml:lang="en"><institution>Belarusian State University; Research Institute for Nuclear Problems of the Belarusian State University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Учреждение БГУ “Научно-исследовательский институт физико-химических проблем”</institution></aff><aff xml:lang="en"><institution>Research Institute of Physical and Chemical Problems of the Belarusian State University</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Учреждение БГУ “Научно-исследовательский институт ядерных проблем”</institution></aff><aff xml:lang="en"><institution>Research Institute for Nuclear Problems of the Belarusian State University</institution></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>ГО “НПЦ НАН Беларуси по материаловедению”</institution></aff><aff xml:lang="en"><institution>State Scientific and Practical Center of the National Academy of Sciences of Belarus for Materials Science</institution></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>Белорусский государственный университет</institution></aff><aff xml:lang="en"><institution>Belarusian State University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>07</day><month>09</month><year>2025</year></pub-date><volume>92</volume><issue>4</issue><fpage>492</fpage><lpage>504</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мицкевич Е.Д., Дегтярик М.М., Харченко А.А., Бушинский М.В., Федотова Ю.А., Воропай Е.С., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Мицкевич Е.Д., Дегтярик М.М., Харченко А.А., Бушинский М.В., Федотова Ю.А., Воропай Е.С.</copyright-holder><copyright-holder xml:lang="en">Mitskevich Y.D., Degtyarik M.M., Kharchanka A.A., Bushinsky M.V., Fedotova Y.A., Voropay E.S.</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://zhps.ejournal.by/jour/article/view/1805">https://zhps.ejournal.by/jour/article/view/1805</self-uri><abstract><p>Магнитные нанокомпозиционные частицы Fe3O4/α-FeOOH синтезированы методом щелочного соосаждения из водных растворов солей двух- и трехвалентного железа. Методами рентгеноструктурного анализа, мёссбауэровской спектроскопии и вибрационной магнитометрии исследованы фазовый состав и магнитные характеристики нанокомпозиционных частиц в сопоставлении с наночастицами монофазного Fe3O4. Различными методами определены размеры полученных частиц (средние диаметры 4—21 нм), а также температура Дебая ΘD = 273±19 и 327±45 К для Fe3O4 и Fe3O4/FeOOH. Полученные магнитные характеристики Fe3O4/FeOOH (Ms ≈ 32 э.м.е./г при Т = 300 К) позволяют использовать данный композитный материал в качестве реагента в процессах усовершенствованного окисления с последующей магнитной декантацией.</p></abstract><trans-abstract xml:lang="en"><p>Magnetic nanocomposite particles Fe3O4/α-FeOOH were synthesized by the method of alkaline coprecipitation from aqueous solutions of salts of di- and trivalent iron. The phase composition and magnetic characteristics of the nanocomposite particles were studied in comparison with nanoparticles of single-phase Fe3O4 using the methods of X-ray structural analysis, Mössbauer spectroscopy and vibration magnetometry. The conducted studies made it possible to determine the sizes of the obtained particles (the average diameters are in the range from 4 to 21 nm) and the Debye temperature, which was ΘD = 273±19 and 327±45 K for Fe3O4 and Fe3O4/FeOOH, respectively. The obtained magnetic characteristics of Fe3O4/FeOOH (Ms ≈ 32 emu/g at T = 300 K) allow using this composite material as a reagent in processes of improved oxidation followed by magnetic decantation.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>наночастицы Fe3O4/α-FeOOH</kwd><kwd>мёссбауэровская спектроскопия</kwd><kwd>фентоновская реакция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Fe3O4/α-FeOOH nanoparticles</kwd><kwd>Mössbauer spectroscopy</kwd><kwd>Fenton reaction</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках программы ГПНИ “Фотоника и электроника для инноваций”, контракта № 100-03006 и ГПНИ “Материаловедение, новые материалы и технологии” № 20211234, “ARIADNA-Модификация”, НИР № гос. регистрации 20212560, а также договора № 08/54-82/24 от 10.04. 2024 г. между НИИ ЯП БГУ и НИИ ФХП БГУ</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">Sifau A. 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