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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">najo</journal-id><journal-title-group><journal-title xml:lang="en">Nanosystems: Physics, Chemistry, Mathematics</journal-title><trans-title-group xml:lang="ru"><trans-title>Наносистемы: физика, химия, математика</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-8054</issn><issn pub-type="epub">2305-7971</issn><publisher><publisher-name>Университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/2220-8054-2023-14-2-264-271</article-id><article-id custom-type="elpub" pub-id-type="custom">najo-152</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="en"><subject>CHEMISTRY AND MATERIALS SCIENCE</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ХИМИЯ И НАУКА О МАТЕРИАЛАХ</subject></subj-group></article-categories><title-group><article-title>Formation of a 10 ˚A phase with halloysite structure under hydrothermal conditions with varying initial chemical composition</article-title><trans-title-group xml:lang="ru"><trans-title>Образование 10 Å фазы со структурой галлуазита в гидротермальных условиях при варьировании химической предыстории исходной композиции</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8886-0731</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Леонов</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Leonov</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="en"><p>Nikita A. Leonov</p><p>26 Politekhnicheskaya, 194021, St. Petersburg</p></bio><email xlink:type="simple">nikita_leonov_1998@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/0000-0003-0620-8016</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Козлов</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kozlov</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="en"><p>Daniil A. Kozlov</p><p>Leninsky gory, 1, 119991, Moscow</p><p>Leninsky pr., 31, 119991, Moscow</p></bio><email xlink:type="simple">kozlov@inorg.chem.msu.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/0000-0002-1571-209X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кириленко</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kirilenko</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="en"><p>Demid A. Kirilenko</p><p>26 Politekhnicheskaya, 194021, St. Petersburg</p></bio><email xlink:type="simple">zumsisai@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6136-4877</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Берт</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bert</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="en"><p>Nikolay A. Bert</p><p>26 Politekhnicheskaya, 194021, St. Petersburg</p></bio><email xlink:type="simple">nikolay.bert@mail.ioffe.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/0009-0000-6320-2011</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пелагейкина</surname><given-names>А. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Pelageikina</surname><given-names>A. O.</given-names></name></name-alternatives><bio xml:lang="en"><p>Anna O. Pelageikina</p><p>26 Politekhnicheskaya, 194021, St. Petersburg</p></bio><email xlink:type="simple">Pelaanna@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/0000-0002-9895-6822</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нечитайлов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Nechitailov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="en"><p>Andrey A. Nechitailov</p><p>26 Politekhnicheskaya, 194021, St. Petersburg</p></bio><email xlink:type="simple">aan.shuv@mail.ioffe.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/0000-0002-0770-9675</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Аликин</surname><given-names>М. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Alikin</surname><given-names>M. B.</given-names></name></name-alternatives><bio xml:lang="en"><p>Mikhail B. Alikin</p><p>190013, St. Petersburg</p></bio><email xlink:type="simple">alikinmix@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3938-3024</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Красилин</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Krasilin</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="en"><p>Andrei A. Krasilin</p><p>26 Politekhnicheskaya, 194021, St. Petersburg</p></bio><email xlink:type="simple">ikrasilin@mail.ioffe.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="en" id="aff-1"><institution>Ioffe Institute</institution><country>Russian Federation</country></aff><aff xml:lang="en" id="aff-2"><institution>Lomonosov Moscow State University; Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences</institution><country>Russian Federation</country></aff><aff xml:lang="en" id="aff-3"><institution>St. Petersburg State Technological University (Technical University)</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>03</day><month>06</month><year>2025</year></pub-date><volume>14</volume><issue>2</issue><fpage>264</fpage><lpage>271</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Leonov N.A., Kozlov D.A., Kirilenko D.A., Bert N.A., Pelageikina A.O., Nechitailov A.A., Alikin M.B., Krasilin A.A., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Леонов Н.А., Козлов Д.А., Кириленко Д.А., Берт Н.А., Пелагейкина А.О., Нечитайлов А.А., Аликин М.Б., Красилин А.А.</copyright-holder><copyright-holder xml:lang="en">Leonov N.A., Kozlov D.A., Kirilenko D.A., Bert N.A., Pelageikina A.O., Nechitailov A.A., Alikin M.B., Krasilin A.A.</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://nanojournal.ifmo.ru/jour/article/view/152">https://nanojournal.ifmo.ru/jour/article/view/152</self-uri><abstract><p>We studied the process of obtaining nanostructured halloysite by varying the parameters for cre ating the initial composition. The initial composition was synthesized by co-hydrolysis of (C3H7O)3Al and (C2H5O)4Si in the C6H14–NH3H2O system. Aluminum hydrosilicate with the composition Al2Si2O5(OH)4 was synthesized under hydrothermal conditions (220 C, 2 MPa, 96 h). Particles of plate-like morphology with av erage length 100– 200 nm and 60 nm thickness were obtained. The PXRD patterns revealed the presence of two phases. Plate-like kaolinites are found. Also we observed the formation of a halloysite-like phase. Studies of synthesized samples by IR spectroscopy and thermal analysis revealed the presence of organic-modified hydrosilicate with phase transition around 412 C. The resulting phase is promising for studying the processes of adsorption and further exfoliation.</p></abstract><trans-abstract xml:lang="ru"><p>Мы изучили процесс получения наноструктурного галлуазита путем варьирования параметров для создания исходной композиции. Исходная композиция была синтезирована совместным гидролизом (C3H7O)3Al и (C2H5O)4Si в системе C6H14–NH3·H2O. Гидросиликат алюминия состава Al2Si2O5(OH)4  был синтезирован в гидротермальных условиях (220°C, 2 МПа, 96 ч). Были получены частицы пластинчатой морфологии со средней длиной 100-200 нм и толщиной 60 нм. Анализ образцов методом порошковой дифрактометрии выявил наличие двух фаз: пластинчатого каолинита, а другой - образование галлуазитоподобной фазы. Исследования синтезированных образцов методом ИК-спектроскопии и термического анализа выявили присутствие органически модифицированного гидросиликата с фазовым переходом около 412 °С. Полученная фаза перспективна для изучения процессов адсорбции и дальнейшей эксфолиации.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>алюминий</kwd><kwd>гидросиликаты</kwd><kwd>гидротермальная обработка</kwd><kwd>каолинит</kwd><kwd>галлуазит</kwd></kwd-group><kwd-group xml:lang="en"><kwd>aluminum</kwd><kwd>hydrosilicates</kwd><kwd>hydrothermal synthesis</kwd><kwd>kaolinite</kwd><kwd>halloysite</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The research was supported by the President of the Russian Federation grant MK 1962.2021.1.3. STEM studies were carried out using the equipment of the JRC PMR IGIC RAS. TEM studies  were partially performed in the Joint Research Center ‘Materials science and characterization in advanced  technology’. 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