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Synthesis, Properties and Photocatalytic Activity of CaTiO(3)-Based Ceramics Doped with Lanthanum
The aim of this work is to study the effect of lanthanum doping on the phase formation processes in ceramics based on CaTiO(3), as well as to evaluate the effectiveness of the ceramics as photocatalysts for the decomposition of the organic dye Rhodamine B. The methods used were scanning electron mic...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9268022/ https://www.ncbi.nlm.nih.gov/pubmed/35808076 http://dx.doi.org/10.3390/nano12132241 |
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author | Zdorovets, Maxim V. Borgekov, Daryn B. Zhumatayeva, Inesh Z. Kenzhina, Inesh E. Kozlovskiy, Artem L. |
author_facet | Zdorovets, Maxim V. Borgekov, Daryn B. Zhumatayeva, Inesh Z. Kenzhina, Inesh E. Kozlovskiy, Artem L. |
author_sort | Zdorovets, Maxim V. |
collection | PubMed |
description | The aim of this work is to study the effect of lanthanum doping on the phase formation processes in ceramics based on CaTiO(3), as well as to evaluate the effectiveness of the ceramics as photocatalysts for the decomposition of the organic dye Rhodamine B. The methods used were scanning electron microscopy to evaluate the morphological features of the synthesized ceramics, X-ray diffraction to determine the phase composition and structural parameters, and UV-Vis spectroscopy to determine the optical properties of the ceramics. During the experiments it was found that an increase in the lanthanum dopant concentration from 0.05 to 0.25 mol leads to the formation of the orthorhombic phase La(0.3)Ca(0.7)TiO(3) and the displacement from the ceramic structure of the impurity phase TiO(2,) which presence is typical for the synthesized ceramics by solid-phase synthesis. On the basis of the data of the X-ray phase analysis the dynamics of phase transformations depending on concentration of lanthanum was established: CaTiO(3)/TiO(2) → CaTiO(3)/La(2)TiO(5) → CaTiO(3)/La(0.3)Ca(0.7)TiO(3) → La(0.3)Ca(0.7)TiO(3). During the determination of photocatalytic activity it was found that the formation of La(0.3)Ca(0.7)TiO(3) phase leads to an increase in the decomposition rate as well as the degree of mineralization. |
format | Online Article Text |
id | pubmed-9268022 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-92680222022-07-09 Synthesis, Properties and Photocatalytic Activity of CaTiO(3)-Based Ceramics Doped with Lanthanum Zdorovets, Maxim V. Borgekov, Daryn B. Zhumatayeva, Inesh Z. Kenzhina, Inesh E. Kozlovskiy, Artem L. Nanomaterials (Basel) Article The aim of this work is to study the effect of lanthanum doping on the phase formation processes in ceramics based on CaTiO(3), as well as to evaluate the effectiveness of the ceramics as photocatalysts for the decomposition of the organic dye Rhodamine B. The methods used were scanning electron microscopy to evaluate the morphological features of the synthesized ceramics, X-ray diffraction to determine the phase composition and structural parameters, and UV-Vis spectroscopy to determine the optical properties of the ceramics. During the experiments it was found that an increase in the lanthanum dopant concentration from 0.05 to 0.25 mol leads to the formation of the orthorhombic phase La(0.3)Ca(0.7)TiO(3) and the displacement from the ceramic structure of the impurity phase TiO(2,) which presence is typical for the synthesized ceramics by solid-phase synthesis. On the basis of the data of the X-ray phase analysis the dynamics of phase transformations depending on concentration of lanthanum was established: CaTiO(3)/TiO(2) → CaTiO(3)/La(2)TiO(5) → CaTiO(3)/La(0.3)Ca(0.7)TiO(3) → La(0.3)Ca(0.7)TiO(3). During the determination of photocatalytic activity it was found that the formation of La(0.3)Ca(0.7)TiO(3) phase leads to an increase in the decomposition rate as well as the degree of mineralization. MDPI 2022-06-29 /pmc/articles/PMC9268022/ /pubmed/35808076 http://dx.doi.org/10.3390/nano12132241 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Zdorovets, Maxim V. Borgekov, Daryn B. Zhumatayeva, Inesh Z. Kenzhina, Inesh E. Kozlovskiy, Artem L. Synthesis, Properties and Photocatalytic Activity of CaTiO(3)-Based Ceramics Doped with Lanthanum |
title | Synthesis, Properties and Photocatalytic Activity of CaTiO(3)-Based Ceramics Doped with Lanthanum |
title_full | Synthesis, Properties and Photocatalytic Activity of CaTiO(3)-Based Ceramics Doped with Lanthanum |
title_fullStr | Synthesis, Properties and Photocatalytic Activity of CaTiO(3)-Based Ceramics Doped with Lanthanum |
title_full_unstemmed | Synthesis, Properties and Photocatalytic Activity of CaTiO(3)-Based Ceramics Doped with Lanthanum |
title_short | Synthesis, Properties and Photocatalytic Activity of CaTiO(3)-Based Ceramics Doped with Lanthanum |
title_sort | synthesis, properties and photocatalytic activity of catio(3)-based ceramics doped with lanthanum |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9268022/ https://www.ncbi.nlm.nih.gov/pubmed/35808076 http://dx.doi.org/10.3390/nano12132241 |
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