Core/Shell ZnO/TiO<sub>2</sub>, SiO<sub>2</sub>/TiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>, and Al<sub>1.9</sub>Co<sub>0.1</sub>O<sub>3</sub>/TiO<sub>2</sub> Nanoparticles for the Photodecomposition of Brilliant Blue E-4BA
The synthesis and characterization of ZnO/TiO<sub>2</sub>, SiO<sub>2</sub>/TiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>, and Al<sub>1.9</sub>Co<sub>0.1</sub>O<sub>3</sub>/TiO&l...
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MDPI AG
2024-10-01
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| Series: | Inorganics |
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| Online Access: | https://www.mdpi.com/2304-6740/12/11/281 |
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| author | Mahboubeh Dolatyari Mehdi Tahmasebi Sudabeh Dolatyari Ali Rostami Armin Zarghami Ashish Yadav Axel Klein |
| author_facet | Mahboubeh Dolatyari Mehdi Tahmasebi Sudabeh Dolatyari Ali Rostami Armin Zarghami Ashish Yadav Axel Klein |
| author_sort | Mahboubeh Dolatyari |
| collection | DOAJ |
| description | The synthesis and characterization of ZnO/TiO<sub>2</sub>, SiO<sub>2</sub>/TiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>, and Al<sub>1.9</sub>Co<sub>0.1</sub>O<sub>3</sub>/TiO<sub>2</sub> core/shell nanoparticles (NPs) is reported. The NPs were used for photocatalytic degradation of brilliant blue E-4BA under UV and visible light irradiation, monitored by high-performance liquid chromatography and UV-vis absorption spectroscopy. The size of the NPs ranged from 10 to 30 nm for the core and an additional 3 nm for the TiO<sub>2</sub> shell. Al<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub> and Al<sub>1.9</sub>Co<sub>0.1</sub>O<sub>3</sub>/TiO<sub>2</sub> showed superior degradation under UV and visible light compared to ZnO/TiO<sub>2</sub> and SiO<sub>2</sub>/TiO<sub>2</sub> with complete photodecomposition of 20 ppm dye in 20 min using a 10 mg/100 mL photocatalyst. The “Co-doped” Al<sub>1.9</sub>Co<sub>0.1</sub>O<sub>3</sub>/TiO<sub>2</sub> NPs show the best performance under visible light irradiation, which is due to increased absorption in the visible range. DFT-calculated band structure calculations confirm the generation of additional electronic levels in the band gap of γ-Al<sub>2</sub>O<sub>3</sub> through Co<sup>3+</sup> ions. This indicates that Co-doping enhances the generation of electron–hole pairs after visible light irradiation. |
| format | Article |
| id | doaj-art-de661db3ad7e4469af0f9449719e096a |
| institution | Kabale University |
| issn | 2304-6740 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Inorganics |
| spelling | doaj-art-de661db3ad7e4469af0f9449719e096a2024-11-26T18:06:55ZengMDPI AGInorganics2304-67402024-10-01121128110.3390/inorganics12110281Core/Shell ZnO/TiO<sub>2</sub>, SiO<sub>2</sub>/TiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>, and Al<sub>1.9</sub>Co<sub>0.1</sub>O<sub>3</sub>/TiO<sub>2</sub> Nanoparticles for the Photodecomposition of Brilliant Blue E-4BAMahboubeh Dolatyari0Mehdi Tahmasebi1Sudabeh Dolatyari2Ali Rostami3Armin Zarghami4Ashish Yadav5Axel Klein6SP-EPT Labs, ASEPE Company, Industrial Park of Advanced Technologies, Tabriz 5364196795, IranQC Lab, Alborz Farmad Company, Eshtehard Industrial Town, Karaj 3188115475, IranQC Lab, Alborz Farmad Company, Eshtehard Industrial Town, Karaj 3188115475, IranSP-EPT Labs, ASEPE Company, Industrial Park of Advanced Technologies, Tabriz 5364196795, IranPhotonics and Nanocrystal Research Lab (PNRL Lab), Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz 5166614761, IranCenter for Advanced Laser Manufacturing (CALM), Shandong University of Technology, Zibo 255000, ChinaUniversity of Cologne, Faculty of Mathematics and Natural Sciences, Department of Chemistry and Biochemistry, Institute for Inorganic and Materials Chemistry, Greinstraße 6, D-50939 Cologne, GermanyThe synthesis and characterization of ZnO/TiO<sub>2</sub>, SiO<sub>2</sub>/TiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>, and Al<sub>1.9</sub>Co<sub>0.1</sub>O<sub>3</sub>/TiO<sub>2</sub> core/shell nanoparticles (NPs) is reported. The NPs were used for photocatalytic degradation of brilliant blue E-4BA under UV and visible light irradiation, monitored by high-performance liquid chromatography and UV-vis absorption spectroscopy. The size of the NPs ranged from 10 to 30 nm for the core and an additional 3 nm for the TiO<sub>2</sub> shell. Al<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub> and Al<sub>1.9</sub>Co<sub>0.1</sub>O<sub>3</sub>/TiO<sub>2</sub> showed superior degradation under UV and visible light compared to ZnO/TiO<sub>2</sub> and SiO<sub>2</sub>/TiO<sub>2</sub> with complete photodecomposition of 20 ppm dye in 20 min using a 10 mg/100 mL photocatalyst. The “Co-doped” Al<sub>1.9</sub>Co<sub>0.1</sub>O<sub>3</sub>/TiO<sub>2</sub> NPs show the best performance under visible light irradiation, which is due to increased absorption in the visible range. DFT-calculated band structure calculations confirm the generation of additional electronic levels in the band gap of γ-Al<sub>2</sub>O<sub>3</sub> through Co<sup>3+</sup> ions. This indicates that Co-doping enhances the generation of electron–hole pairs after visible light irradiation.https://www.mdpi.com/2304-6740/12/11/281photocatalystnanomaterialsheterojunctiondye degradationDFT calculations |
| spellingShingle | Mahboubeh Dolatyari Mehdi Tahmasebi Sudabeh Dolatyari Ali Rostami Armin Zarghami Ashish Yadav Axel Klein Core/Shell ZnO/TiO<sub>2</sub>, SiO<sub>2</sub>/TiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>, and Al<sub>1.9</sub>Co<sub>0.1</sub>O<sub>3</sub>/TiO<sub>2</sub> Nanoparticles for the Photodecomposition of Brilliant Blue E-4BA Inorganics photocatalyst nanomaterials heterojunction dye degradation DFT calculations |
| title | Core/Shell ZnO/TiO<sub>2</sub>, SiO<sub>2</sub>/TiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>, and Al<sub>1.9</sub>Co<sub>0.1</sub>O<sub>3</sub>/TiO<sub>2</sub> Nanoparticles for the Photodecomposition of Brilliant Blue E-4BA |
| title_full | Core/Shell ZnO/TiO<sub>2</sub>, SiO<sub>2</sub>/TiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>, and Al<sub>1.9</sub>Co<sub>0.1</sub>O<sub>3</sub>/TiO<sub>2</sub> Nanoparticles for the Photodecomposition of Brilliant Blue E-4BA |
| title_fullStr | Core/Shell ZnO/TiO<sub>2</sub>, SiO<sub>2</sub>/TiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>, and Al<sub>1.9</sub>Co<sub>0.1</sub>O<sub>3</sub>/TiO<sub>2</sub> Nanoparticles for the Photodecomposition of Brilliant Blue E-4BA |
| title_full_unstemmed | Core/Shell ZnO/TiO<sub>2</sub>, SiO<sub>2</sub>/TiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>, and Al<sub>1.9</sub>Co<sub>0.1</sub>O<sub>3</sub>/TiO<sub>2</sub> Nanoparticles for the Photodecomposition of Brilliant Blue E-4BA |
| title_short | Core/Shell ZnO/TiO<sub>2</sub>, SiO<sub>2</sub>/TiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub>, and Al<sub>1.9</sub>Co<sub>0.1</sub>O<sub>3</sub>/TiO<sub>2</sub> Nanoparticles for the Photodecomposition of Brilliant Blue E-4BA |
| title_sort | core shell zno tio sub 2 sub sio sub 2 sub tio sub 2 sub al sub 2 sub o sub 3 sub tio sub 2 sub and al sub 1 9 sub co sub 0 1 sub o sub 3 sub tio sub 2 sub nanoparticles for the photodecomposition of brilliant blue e 4ba |
| topic | photocatalyst nanomaterials heterojunction dye degradation DFT calculations |
| url | https://www.mdpi.com/2304-6740/12/11/281 |
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