Features of Ce(IV) phosphate coatings formation on the silica surface during their synthesis by successive ionic layer deposition method
https://doi.org/10.17586/2220-8054-2025-16-6-812-817
Abstract
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.
Supporting agencies: This work was supported by the RSF grant (project # 23-19-00566). We are grateful to the “Nanotechnology Centre” of Saint-Petersburg State University for technical assistance in the study of the synthesized samples.
About the Authors
Yu. Chuvilo
Institute of Chemistry, Saint Petersburg State University
Russian Federation
Russian Federation
Yuliana Chuvilo
University St. 26, St. Peterhof, Saint Petersburg, 198504
L. Kuklo
Institute of Chemistry, Saint Petersburg State University
Russian Federation
Russian Federation
Leonid Kuklo
University St. 26, St. Peterhof, Saint Petersburg, 198504
V Tolstoy
Institute of Chemistry, Saint Petersburg State University
Russian Federation
Russian Federation
Valeri Tolstoy
University St. 26, St. Peterhof, Saint Petersburg, 198504
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For citations:
Chuvilo Yu., Kuklo L., Tolstoy V. Features of Ce(IV) phosphate coatings formation on the silica surface during their synthesis by successive ionic layer deposition method. Nanosystems: Physics, Chemistry, Mathematics. 2025;16(6):812-817. https://doi.org/10.17586/2220-8054-2025-16-6-812-817
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