najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2024-15-1-98-103najo-69Research ArticleCHEMISTRY AND MATERIAL SCIENCEХИМИЯ И МАТЕРИАЛОВЕДЕНИЕThe effect of Ag(0) colloidal crystals and nanoribbons formation as a result of the redox reaction between Ce(III) and Ag(I) cations occurring on the surface of an aqueous solution of their salts mixtureНазвание статьи: Эффект образования коллоидных кристаллов и нанолент Ag(0) в результате окислительно-восстановительной реакции между катионами Ce(III) и Ag(I) на поверхности водного раствора смеси их солейhttps://orcid.org/0000-0003-3857-7238ТолстойВ. П.TolstoyV. P.

Valeri P. Tolstoy

St. Petersburg, 198504

v.tolstoy@spbu.ruhttps://orcid.org/0009-0008-6893-9563ШиловскихЭ. Э.ShilovskikhE. E.

Evelina E. Shilovskikh

St. Petersburg, 198504

st084853@student.spbu.ruhttps://orcid.org/0000-0002-1622-4311ГулинаЛ. Б.GulinaL. B.

Larisa B. Gulina

St. Petersburg, 198504

l.gulina@spbu.ruInstitute of Chemistry, Saint Petersburg State UniversityRussian Federation20243105202515198103Copyright © Tolstoy V.P., Shilovskikh E.E., Gulina L.B., 20252025Толстой В.П., Шиловских Э.Э., Гулина Л.Б.Tolstoy V.P., Shilovskikh E.E., Gulina L.B.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/69

The proposed study shows for the first time that gaseous ammonia treatment of AgNO3 and Ce(NO3)3 salts mixture aqueous solution surface gives rise to formation of a composite layer consisting of Ag(0) faceted colloidal crystals and nanoribbons, as well as CeO2 nanocrystals. A study of such a composite carried out by FESEM, XRD, EDX, TEM, STEM and HRTEM methods has shown that the nanoribbons are about 50–150 nm wide and up to 2–3 µm long, and that there are 2–3 nm CeO2 nanocrystals on the surface thereof. Colloidal crystals of about several micrometers consist of separate, almost identical silver nanocrystals about 20 nm in size. The obtained results provided a basis for construction of schemes of chemical reactions taking place during the synthesis, and gave grounds for recommendations on practical application of the obtained compounds.

В работе впервые показано, что при обработке газообразным аммиаком поверхности водного раствора смеси солей AgNO3 и Ce(NO3)3 на ней образуется слой композита из  коллоидных ограненных кристаллов и нанолент Ag(0), а также нанокристаллов CeO2. Исследование такого композита методами FESEM, XRD, EDX, TEM, STEM and HRTEM показало, что наноленты имеют ширину около 50-150 нм и длину до 2-3 мкм, и на их поверхности находятся нанокристаллы CeO2 размером 2-3 нм. Коллоидные кристаллы размером в несколько микрометров состоят из отдельных практически одинаковых нанокристаллов серебра размером около 20 нм. На основе полученных результатов построены схемы химических реакций, которые протекают при синтезе, и сделаны рекомендации по применению полученных соединений на практике.

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The authors declare that there are no conflicts of interest present.