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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">10.17586/2220-8054-2021-12-2-188-198</article-id><article-id custom-type="elpub" pub-id-type="custom">najo-359</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>NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>НАНОСИСТЕМЫ: ФИЗИКА, ХИМИЯ, МАТЕМАТИКА</subject></subj-group></article-categories><title-group><article-title>Comparative study of synthesis and structural by using different precursors of copper oxide nanoparticles and their application in the adsorption capacity</article-title><trans-title-group xml:lang="ru"><trans-title>Сравнительное исследование синтеза и структуры наночастиц оксида меди при использовании различных прекурсоров и анализ возможности применение их в качестве адсорбентов</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>Bahga-Saleh</surname></name><name name-style="western" xml:lang="en"><surname>Bahga-Saleh</surname><given-names>.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Aurangabad (MS)</p></bio><bio xml:lang="en"><p>Aurangabad (MS)</p></bio><email xlink:type="simple">yshaikh@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>Fatema</surname><given-names>Samreen</given-names></name><name name-style="western" xml:lang="en"><surname>Fatema</surname><given-names>Samreen</given-names></name></name-alternatives><bio xml:lang="ru"><p>Aurangabad (MS)</p></bio><bio xml:lang="en"><p>Aurangabad (MS)</p></bio><email xlink:type="simple">yshaikh@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>Farooqui</surname><given-names>Mazhar</given-names></name><name name-style="western" xml:lang="en"><surname>Farooqui</surname><given-names>Mazhar</given-names></name></name-alternatives><bio xml:lang="ru"><p>Aurangabad (MS)</p></bio><bio xml:lang="en"><p>Aurangabad (MS)</p></bio><email xlink:type="simple">yshaikh@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>Yusuf</surname><given-names>Shaikh</given-names></name><name name-style="western" xml:lang="en"><surname>Yusuf</surname><given-names>Shaikh</given-names></name></name-alternatives><bio xml:lang="ru"><p>Kannad (MS)</p></bio><bio xml:lang="en"><p>Kannad (MS)</p></bio><email xlink:type="simple">yshaikh@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Maulana Azad College of Arts, Science and Commerce</institution></aff><aff xml:lang="en"><institution>Maulana Azad College of Arts, Science and Commerce</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Shivaji College</institution></aff><aff xml:lang="en"><institution>Shivaji College</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>28</day><month>07</month><year>2025</year></pub-date><volume>12</volume><issue>2</issue><fpage>188</fpage><lpage>198</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Bahga-Saleh .., Fatema S., Farooqui M., Yusuf S., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Bahga-Saleh .., Fatema S., Farooqui M., Yusuf S.</copyright-holder><copyright-holder xml:lang="en">Bahga-Saleh .., Fatema S., Farooqui M., Yusuf 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://nanojournal.ifmo.ru/jour/article/view/359">https://nanojournal.ifmo.ru/jour/article/view/359</self-uri><abstract><p>Copper oxide nanoparticles were prepared by five sol-gel methods. The comparative study was made by the characterization such as FTIR, SEMEDX, XRD. Out of these protocols, method five is more suitable and gives more accurate and appropriate results. From the data of EDX it is also found that method five gives higher yields of copper oxide nanoparticles. The efficiency of these nanoparticles as low cost adsorbent for the removal of methylene blue (MB) capacity from aqueous solutions was investigated. The effect of different parameters such as amount of adsorbent, concentration of dye, contact time, pH, temperature were studied the adsorption capacity and adsorption behavior of nanoparticles under various conditions. The experimental isotherm data has been studied. The kinetic study of the adsorption obeys Pseudo-first order model. The thermodynamic parameters namely Gibbs free energy, enthalpy, and entropy have revealed that the adsorption of methylene blue on the nanoparticles are feasible, spontaneous and exothermic.</p></abstract><trans-abstract xml:lang="ru"><p>Наночастицы оксида меди были получены пятью золь-гель методами. Сравнительное исследование было выполнено с помощью таких методов, как FTIR, SEMEDX, XRD. На основании анализа результатов выявлено, что пятый метод является более подходящим и дает более точные и правильные результаты. Из данных EDX также установлено, что пятый метод дает более высокие выходы наночастиц оксида меди. Исследована эффективность этих наночастиц в качестве недорогого адсорбента для удаления метиленового синего (МС) из водных растворов. Было изучено влияние различных параметров, таких как количество адсорбента, концентрация красителя, время контакта, рН, температура, на адсорбционную способность и адсорбционное поведение наночастиц в различных условиях. Изучены экспериментальные изотермические данные. Кинетическое исследование адсорбции подчиняется модели псевдопервого порядка. Термодинамические параметры, а именно свободная энергия Гиббса, энтальпия и энтропия, показали, что адсорбция метиленового синего на наночастицах возможна, спонтанна и экзотермична.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>наночастицы</kwd><kwd>золь-гель метод</kwd><kwd>оксид меди</kwd><kwd>адсорбция</kwd><kwd>FTIR</kwd><kwd>SEM-EDX</kwd><kwd>XRD</kwd></kwd-group><kwd-group xml:lang="en"><kwd>nanoparticals</kwd><kwd>sol-gel method</kwd><kwd>copper oxide</kwd><kwd>adsorption</kwd><kwd>FTIR</kwd><kwd>SEM-EDX</kwd><kwd>XRD</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Saja M.J. Synthesis of CuO Nano structure via sol-gel and Precipitation Chemical Methods. 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