najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМОnajo-1491Research 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 methodhttps://orcid.org/0000-0003-3857-7238TolstoyValeri P.

Department of Solid State Chemistry

v.tolstoy@spbu.ruChuviloYuliana D.

Department of Solid State Chemistry

st087011@student.spbu.ruhttps://orcid.org/0000-0002-7502-6788KukloLeonid I.

Department of Solid State Chemistry

lenkuklo@mail.ruИнститут химии СПбГУInstitute of Chemistry, Saint Petersburg State University, University St. 26, St. Peterhof, Saint Petersburg, 198504Institute of Chemistry, Saint Petersburg State University, University St. 26, St. Peterhof, Saint Petersburg, 198504Russian Federation2025050220261661491Copyright © Tolstoy V.P., Chuvilo Y.D., Kuklo L.I., 20262026Tolstoy V.P., Chuvilo Y.D., Kuklo L.I.Tolstoy V.P., Chuvilo Y.D., Kuklo L.I.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/1491

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 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.  

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