Phase Transformations and Photocatalytic Activity of Nanostructured Y<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>-Y<sub>2</sub>TiO<sub>5</sub> Ceramic Such as Doped with Carbon Nanotubes
This work is devoted to the study of phase transition processes in nanostructured ceramics of the Y<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>-Y<sub>2</sub>TiO<sub>5</sub> type doped with carbon nanotubes as a result of thermal annealing, as...
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MDPI AG
2020-04-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/25/8/1943 |
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| author | Artem L. Kozlovskiy Inesh Z. Zhumatayeva Dina Mustahieva Maxim V. Zdorovets |
| author_facet | Artem L. Kozlovskiy Inesh Z. Zhumatayeva Dina Mustahieva Maxim V. Zdorovets |
| author_sort | Artem L. Kozlovskiy |
| collection | DOAJ |
| description | This work is devoted to the study of phase transition processes in nanostructured ceramics of the Y<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>-Y<sub>2</sub>TiO<sub>5</sub> type doped with carbon nanotubes as a result of thermal annealing, as well as to the assessment of the prospects of the effect of phase composition on photocatalytic activity. By the method of X-ray phase analysis, it was found that an increase in the annealing temperature leads to the formation of the orthorhombic phase Y<sub>2</sub>TiO<sub>5</sub>, as well as structural ordering. Based on the obtained UV spectra, the band gap was calculated, which varies from 2.9 eV (initial sample) to 2.1 eV (annealed at a temperature of 1000 °C). During photocatalytic tests, it was established that the synthesized nanostructured ceramics Y<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>-Y<sub>2</sub>TiO<sub>5</sub> doped CNTs show a fairly good photocatalytic activity in the range of 60–90% decomposition of methyl orange. |
| first_indexed | 2024-03-10T20:18:11Z |
| format | Article |
| id | doaj.art-45124a20aee840ffa80aaf0e80675559 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T20:18:11Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-45124a20aee840ffa80aaf0e806755592023-11-19T22:23:03ZengMDPI AGMolecules1420-30492020-04-01258194310.3390/molecules25081943Phase Transformations and Photocatalytic Activity of Nanostructured Y<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>-Y<sub>2</sub>TiO<sub>5</sub> Ceramic Such as Doped with Carbon NanotubesArtem L. Kozlovskiy0Inesh Z. Zhumatayeva1Dina Mustahieva2Maxim V. Zdorovets3Engineering Profile Laboratory, L.N. Gumilyov Eurasian National University, Nur-Sultan 010008, KazakhstanEngineering Profile Laboratory, L.N. Gumilyov Eurasian National University, Nur-Sultan 010008, KazakhstanEngineering Profile Laboratory, L.N. Gumilyov Eurasian National University, Nur-Sultan 010008, KazakhstanEngineering Profile Laboratory, L.N. Gumilyov Eurasian National University, Nur-Sultan 010008, KazakhstanThis work is devoted to the study of phase transition processes in nanostructured ceramics of the Y<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>-Y<sub>2</sub>TiO<sub>5</sub> type doped with carbon nanotubes as a result of thermal annealing, as well as to the assessment of the prospects of the effect of phase composition on photocatalytic activity. By the method of X-ray phase analysis, it was found that an increase in the annealing temperature leads to the formation of the orthorhombic phase Y<sub>2</sub>TiO<sub>5</sub>, as well as structural ordering. Based on the obtained UV spectra, the band gap was calculated, which varies from 2.9 eV (initial sample) to 2.1 eV (annealed at a temperature of 1000 °C). During photocatalytic tests, it was established that the synthesized nanostructured ceramics Y<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>-Y<sub>2</sub>TiO<sub>5</sub> doped CNTs show a fairly good photocatalytic activity in the range of 60–90% decomposition of methyl orange.https://www.mdpi.com/1420-3049/25/8/1943carbon nanotubesdopingtitanium oxideY<sub>2</sub>TiO<sub>5</sub> ceramicphase transformations |
| spellingShingle | Artem L. Kozlovskiy Inesh Z. Zhumatayeva Dina Mustahieva Maxim V. Zdorovets Phase Transformations and Photocatalytic Activity of Nanostructured Y<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>-Y<sub>2</sub>TiO<sub>5</sub> Ceramic Such as Doped with Carbon Nanotubes Molecules carbon nanotubes doping titanium oxide Y<sub>2</sub>TiO<sub>5</sub> ceramic phase transformations |
| title | Phase Transformations and Photocatalytic Activity of Nanostructured Y<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>-Y<sub>2</sub>TiO<sub>5</sub> Ceramic Such as Doped with Carbon Nanotubes |
| title_full | Phase Transformations and Photocatalytic Activity of Nanostructured Y<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>-Y<sub>2</sub>TiO<sub>5</sub> Ceramic Such as Doped with Carbon Nanotubes |
| title_fullStr | Phase Transformations and Photocatalytic Activity of Nanostructured Y<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>-Y<sub>2</sub>TiO<sub>5</sub> Ceramic Such as Doped with Carbon Nanotubes |
| title_full_unstemmed | Phase Transformations and Photocatalytic Activity of Nanostructured Y<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>-Y<sub>2</sub>TiO<sub>5</sub> Ceramic Such as Doped with Carbon Nanotubes |
| title_short | Phase Transformations and Photocatalytic Activity of Nanostructured Y<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>-Y<sub>2</sub>TiO<sub>5</sub> Ceramic Such as Doped with Carbon Nanotubes |
| title_sort | phase transformations and photocatalytic activity of nanostructured y sub 2 sub o sub 3 sub tio sub 2 sub y sub 2 sub tio sub 5 sub ceramic such as doped with carbon nanotubes |
| topic | carbon nanotubes doping titanium oxide Y<sub>2</sub>TiO<sub>5</sub> ceramic phase transformations |
| url | https://www.mdpi.com/1420-3049/25/8/1943 |
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