najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2025-16-6-812-817najo-1621Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХFeatures of Ce(IV) phosphate coatings formation on the silica surface during their synthesis by successive ionic layer deposition methodОсобенности формирования покрытий фосфата Ce(IV) на поверхности кремнезема при их синтезе методом ионного наслаиванияЧувилоЮ.ChuviloYu.

Yuliana Chuvilo

University St. 26, St. Peterhof, Saint Petersburg, 198504

st087011@student.spbu.ruhttps://orcid.org/0000-0002-7502-6788КуклоЛ.KukloL.

Leonid Kuklo

University St. 26, St. Peterhof, Saint Petersburg, 198504

lenkuklo@mail.ruhttps://orcid.org/0000-0003-3857-7238ТолстойВ.TolstoyV.

Valeri Tolstoy

University St. 26, St. Peterhof, Saint Petersburg, 198504

v.tolstoy@spbu.ruInstitute of Chemistry, Saint Petersburg State UniversityRussian Federation202506012026166812817Copyright © Chuvilo Y., Kuklo L., Tolstoy V., 20262026Чувило Ю., Кукло Л., Толстой В.Chuvilo Y., Kuklo L., Tolstoy V.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/1621

The article presents the conditions for obtaining Ce(IV) phosphate coatings on the surface of silicon and quartz by the successive ionic layer deposition (SILD) method. It has been shown that when using solutions of (NH4)4Ce(SO4)4 and NaH2PO4 as reagents, coatings of the composition Ce(OH)PO4 · nH2O are formed on the surface of the substrates, and when using solutions of (NH4)4Ce(SO4)4 and Na3PO4, coatings of the composition Na0.2Ce(OH)2.4(PO4)0.6 · nH2O are formed. These compounds have an amorphous structure. SEM analysis of Na0.2Ce(OH)2.4(PO4)0.6 · nH2O on the silicon surface showed that for the samples obtained as a result of 15 SILD cycles, the planar isotropic coatings are rolled into microtubules with a microscroll morphology of 3–5 µm in diameter and 30–100 µm in length. The composition of the noted Ce(IV) phosphates can be relatively easily doped during the synthesis process, for example, with Fe(II) cations and tungstate anions. It was found that Ce(OH)PO4 · nH2O coatings are characterized by intense absorption band in the UV region of the spectrum, and can be used as components in various types of absorbers. Moreover, the degree of absorption can be controlled by varying the number of synthesis conditions, for example, the number of SILD cycles.

В статье представлены условия получения покрытий фосфата Ce(IV) на поверхности кремния и кварца методом ионного наслаивания (ИН). Показано, что при использовании в качестве реагентов растворов (NH4)4Ce(SO4)4 и NaH2PO4 на поверхности подложек формируются покрытия состава Ce(OH)PO4·nH2O, а при использовании растворов (NH4)4Ce(SO4)4 и Na3PO4 – покрытия состава Na0,2Ce(OH)2,4(PO4)0,6·nH2O. Эти соединения имеют аморфную структуру. Анализ методом СЭМ Na0,2Ce(OH)2,4(PO4)0,6·nH2O на поверхности кремния показал, что для образцов, полученных в результате 15 циклов ИН, планарные изотропные покрытия частично сворачиваются в микротрубки с морфологией микросвитков диаметром 3–5 мкм и длиной 30–100 мкм. Состав указанных фосфатов Ce(IV) может быть сравнительно легко допирован в процессе синтеза, например, катионами Fe(II) и вольфрамат-анионами. Установлено, что покрытия Ce(OH)PO4·nH2O характеризуются интенсивной полосой поглощения в УФ-области спектра и могут быть использованы в качестве компонентов различных защитных средств. При этом степень поглощения УФ-излучения в таком покрытии можно контролировать, варьируя условия синтеза, например, количество циклов ИН.

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