Improving Photocatalytic Efficiency with Titanium Dioxide Quantum Dots
Titanium dioxide quantum dots (TiO2-QDs), synthesized using a microwave-assisted method, represent a significant advancement in photocatalysis, particularly in the treatment of environmental pollutants. This study focuses on TiO2-QDs synthesized at 200°C for a duration of 5 minutes, using titanium b...
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Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)
2024-10-01
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| Series: | Bulletin of Chemical Reaction Engineering & Catalysis |
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| Online Access: | https://journal.bcrec.id/index.php/bcrec/article/view/20176 |
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| author | Nam Duy Dao Tho Thi Lam Anh Dieu Van Ha Thi Thu Vu Hai Huynh Trung |
| author_facet | Nam Duy Dao Tho Thi Lam Anh Dieu Van Ha Thi Thu Vu Hai Huynh Trung |
| author_sort | Nam Duy Dao |
| collection | DOAJ |
| description | Titanium dioxide quantum dots (TiO2-QDs), synthesized using a microwave-assisted method, represent a significant advancement in photocatalysis, particularly in the treatment of environmental pollutants. This study focuses on TiO2-QDs synthesized at 200°C for a duration of 5 minutes, using titanium butoxide as a precursor. Characterization through TEM, XRD, PL, and UV-Vis-DRS analyses revealed uniform quantum dots with an average size of 5.28 nm, a bandgap energy of 3.22 eV, and a crystalline anatase phase, indicative of high photocatalytic activity. Notably, these TiO2-QDs demonstrated exceptional performance in degrading methylene blue (MB) in water, achieving a remarkable treatment efficiency of 97.6% in 120 min, significantly outperforming both conventional titanium dioxide nanoparticles and commercial titanium dioxide materials. The reaction conditions were evaluated based on factors such as catalyst dose, initial MB concentration, and pH. The results indicate that optimal degradation efficiency of MB was achieved at a pH of 7, with a catalyst dose of 0.15 g/L and at a low MB concentration. The efficiency slightly decreased to 94.5% after five reuse cycles, emphasizing its significant reusability and stability. Copyright © 2024 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). |
| format | Article |
| id | doaj-art-6ba109604f1c498b9979af12f8e3797c |
| institution | Kabale University |
| issn | 1978-2993 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS) |
| record_format | Article |
| series | Bulletin of Chemical Reaction Engineering & Catalysis |
| spelling | doaj-art-6ba109604f1c498b9979af12f8e3797c2025-02-02T02:54:11ZengMasyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)Bulletin of Chemical Reaction Engineering & Catalysis1978-29932024-10-0119340841710.9767/bcrec.201768459Improving Photocatalytic Efficiency with Titanium Dioxide Quantum DotsNam Duy Dao0Tho Thi Lam1Anh Dieu Van2Ha Thi Thu Vu3Hai Huynh Trung4School of Chemistry and Life Science, Hanoi University of Science and Technology, 1 Dai Co Viet Road, Hai Ba Trung, Hanoi, Viet NamNational Key Laboratory for Petrochemical and Refinery Technology, 2 Pham Ngu Lao Street, Hoan Kiem District, Hanoi, Viet NamSchool of Chemistry and Life Science, Hanoi University of Science and Technology, 1 Dai Co Viet Road, Hai Ba Trung, Hanoi, Viet NamNational Key Laboratory for Petrochemical and Refinery Technology, 2 Pham Ngu Lao Street, Hoan Kiem District, Hanoi, Viet NamSchool of Materials Science and Engineering, Hanoi University of Science and Technology, 1 Dai Co Viet Road, Hai Ba Trung, Hanoi, Viet NamTitanium dioxide quantum dots (TiO2-QDs), synthesized using a microwave-assisted method, represent a significant advancement in photocatalysis, particularly in the treatment of environmental pollutants. This study focuses on TiO2-QDs synthesized at 200°C for a duration of 5 minutes, using titanium butoxide as a precursor. Characterization through TEM, XRD, PL, and UV-Vis-DRS analyses revealed uniform quantum dots with an average size of 5.28 nm, a bandgap energy of 3.22 eV, and a crystalline anatase phase, indicative of high photocatalytic activity. Notably, these TiO2-QDs demonstrated exceptional performance in degrading methylene blue (MB) in water, achieving a remarkable treatment efficiency of 97.6% in 120 min, significantly outperforming both conventional titanium dioxide nanoparticles and commercial titanium dioxide materials. The reaction conditions were evaluated based on factors such as catalyst dose, initial MB concentration, and pH. The results indicate that optimal degradation efficiency of MB was achieved at a pH of 7, with a catalyst dose of 0.15 g/L and at a low MB concentration. The efficiency slightly decreased to 94.5% after five reuse cycles, emphasizing its significant reusability and stability. Copyright © 2024 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).https://journal.bcrec.id/index.php/bcrec/article/view/20176tio2 quantum dottio2 photocatalystmethylene blue treatmentmicrowave-assisted method |
| spellingShingle | Nam Duy Dao Tho Thi Lam Anh Dieu Van Ha Thi Thu Vu Hai Huynh Trung Improving Photocatalytic Efficiency with Titanium Dioxide Quantum Dots Bulletin of Chemical Reaction Engineering & Catalysis tio2 quantum dot tio2 photocatalyst methylene blue treatment microwave-assisted method |
| title | Improving Photocatalytic Efficiency with Titanium Dioxide Quantum Dots |
| title_full | Improving Photocatalytic Efficiency with Titanium Dioxide Quantum Dots |
| title_fullStr | Improving Photocatalytic Efficiency with Titanium Dioxide Quantum Dots |
| title_full_unstemmed | Improving Photocatalytic Efficiency with Titanium Dioxide Quantum Dots |
| title_short | Improving Photocatalytic Efficiency with Titanium Dioxide Quantum Dots |
| title_sort | improving photocatalytic efficiency with titanium dioxide quantum dots |
| topic | tio2 quantum dot tio2 photocatalyst methylene blue treatment microwave-assisted method |
| url | https://journal.bcrec.id/index.php/bcrec/article/view/20176 |
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