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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="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Inorganic Materials</journal-id><journal-title-group><journal-title xml:lang="en">Inorganic Materials</journal-title><trans-title-group xml:lang="ru"><trans-title>Неорганические материалы</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0002-337X</issn><issn publication-format="electronic">3034-5588</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">231902</article-id><article-id pub-id-type="doi">10.31857/S0002337X23070163</article-id><article-id pub-id-type="edn">QSGZDZ</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Unknown</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Chemical Processes of the Formation of Copper(I) Oxide on Copper Foil under Hydrothermal Conditions</article-title><trans-title-group xml:lang="ru"><trans-title>Химические процессы формирования оксида меди(I) на медной фольге в гидротермальных условиях</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Zimbovskii</surname><given-names>D. S.</given-names></name><name xml:lang="ru"><surname>Зимбовский</surname><given-names>Д. С.</given-names></name></name-alternatives><email>anb@inorg.chem.msu.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Baranov</surname><given-names>A. N.</given-names></name><name xml:lang="ru"><surname>Баранов</surname><given-names>А. Н.</given-names></name></name-alternatives><email>anb@inorg.chem.msu.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Moscow Institute of Physics and Technology (National Research University)</institution></aff><aff><institution xml:lang="ru">Московский физико-технический институт (национальный исследовательский университет)</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Moscow State University</institution></aff><aff><institution xml:lang="ru">Московский государственный университет им. М.В. Ломоносова</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-07-01" publication-format="electronic"><day>01</day><month>07</month><year>2023</year></pub-date><volume>59</volume><issue>7</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>780</fpage><lpage>787</lpage><history><date date-type="received" iso-8601-date="2023-12-25"><day>25</day><month>12</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Д.С. Зимбовский, А.Н. Баранов</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Д.С. Зимбовский, А.Н. Баранов</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Д.С. Зимбовский, А.Н. Баранов</copyright-holder><copyright-holder xml:lang="ru">Д.С. Зимбовский, А.Н. Баранов</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://journals.rcsi.science/0002-337X/article/view/231902">https://journals.rcsi.science/0002-337X/article/view/231902</self-uri><abstract xml:lang="en"><p>In this paper, we study the nucleation and growth of a copper(I) oxide layer during hydrothermal treatment of copper foil in an alkaline solution. Experimental (X-ray diffraction and scanning electron microscopy) data, Gibbs free energy calculations, and analysis of the growth process in terms of the Cabrera–Mott approach lead us to conclude that the hydroxide anion and dissolved oxygen concentrations play a key role in determining the phase composition and morphology of the hydrothermal treatment product.</p></abstract><trans-abstract xml:lang="ru"><p id="idm45257551960256">В работе рассмотрен процесс зарождения и роста слоя оксида меди(I) в ходе гидротермальной обработки медной фольги в щелочном растворе. На основании совокупности экспериментальных данных: результатов рентгенофазового анализа, растровой электронной микроскопии, а также расчетов свободной энергии Гиббса реакций, при использовании подхода Кабрера–Мотта был сделан вывод, что определяющими факторами в фазовом составе продукта и его морфологии оказываются концентрация гидроксид-анионов и содержание растворенного кислорода.</p></trans-abstract><kwd-group xml:lang="en"><kwd>hydrothermal synthesis</kwd><kwd>copper(I) oxide</kwd><kwd>p-type semiconductor</kwd><kwd>role of oxygen</kwd><kwd>main stages of growth</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>гидротермальный синтез</kwd><kwd>оксид меди(I)</kwd><kwd><italic>p-</italic>полупроводник</kwd><kwd>роль кислорода</kwd><kwd>основные стадии роста</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Navarro R.M., del Valle F., Villoria de la Mano J.A., Álvarez-Galván M.C., Fierro J.L.G. 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