Energy-efficient Carbon-doped TiO2 for Visible Light Degradation of Methyl Orange: Preparation, Performance, and Mechanism
Water pollution caused by textile dyes has become a serious issue, making the treatment of sewage urgent. Carbon-doped TiO2 (C-doped TiO2), using alkanes and polyols as carbon sources, has been found to be light-responsive in degrading dyes. However, there is a lack of studies on the interfacial int...
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Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)
2024-12-01
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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/20236 |
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| author | Xinying Han Yubei Guo Chien Yong Goh Cheng Loong Ngan Jian Ping Tan Peng Chee Tan Sin Yuan Lai |
| author_facet | Xinying Han Yubei Guo Chien Yong Goh Cheng Loong Ngan Jian Ping Tan Peng Chee Tan Sin Yuan Lai |
| author_sort | Xinying Han |
| collection | DOAJ |
| description | Water pollution caused by textile dyes has become a serious issue, making the treatment of sewage urgent. Carbon-doped TiO2 (C-doped TiO2), using alkanes and polyols as carbon sources, has been found to be light-responsive in degrading dyes. However, there is a lack of studies on the interfacial interaction between carboxylic acids and TiO2. Therefore, citric acid, a triprotic, hexadentate carboxylic acid, was used to dope TiO2 through solvothermal-calcination. The effects of carbon content and calcination temperature on the photodegradation performance of C-doped TiO2 were investigated. The band gap energy of C-doped TiO2 was found to be narrower (2.67 eV) than that of undoped TiO2 (2.88 eV). After carbon doping, the absorption band extended from the UV to the visible regions, lowering the energy required for electron excitation. The functional groups present on C-doped TiO2 assisted in the adsorption of methyl orange (MO), assisting in photodegradation. Only the anatase phase of TiO2 was observed at calcination temperatures between 250 and 400 °C. Photoluminescence analysis revealed that a lower carbon content and slightly higher calcination temperature resulted in better interfacial charge separation and transfer efficiency. The 10 wt% C-doped TiO2 calcined at 300 °C demonstrated the best MO photodegradation efficiency of 62.1% under visible light illumination. 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-d3690066b51548708abbd141578fcded |
| institution | Kabale University |
| issn | 1978-2993 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS) |
| record_format | Article |
| series | Bulletin of Chemical Reaction Engineering & Catalysis |
| spelling | doaj-art-d3690066b51548708abbd141578fcded2025-02-02T02:54:01ZengMasyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)Bulletin of Chemical Reaction Engineering & Catalysis1978-29932024-12-0119469270910.9767/bcrec.202368483Energy-efficient Carbon-doped TiO2 for Visible Light Degradation of Methyl Orange: Preparation, Performance, and MechanismXinying Han0Yubei Guo1Chien Yong Goh2Cheng Loong Ngan3https://orcid.org/0000-0001-6231-5583Jian Ping Tan4Peng Chee Tan5Sin Yuan Lai6https://orcid.org/0000-0003-3534-7381School of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor, MalaysiaSchool of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor, MalaysiaDepartment of Mathematics, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor, MalaysiaSchool of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor, MalaysiaSchool of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor, MalaysiaSchool of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor, MalaysiaSchool of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor, MalaysiaWater pollution caused by textile dyes has become a serious issue, making the treatment of sewage urgent. Carbon-doped TiO2 (C-doped TiO2), using alkanes and polyols as carbon sources, has been found to be light-responsive in degrading dyes. However, there is a lack of studies on the interfacial interaction between carboxylic acids and TiO2. Therefore, citric acid, a triprotic, hexadentate carboxylic acid, was used to dope TiO2 through solvothermal-calcination. The effects of carbon content and calcination temperature on the photodegradation performance of C-doped TiO2 were investigated. The band gap energy of C-doped TiO2 was found to be narrower (2.67 eV) than that of undoped TiO2 (2.88 eV). After carbon doping, the absorption band extended from the UV to the visible regions, lowering the energy required for electron excitation. The functional groups present on C-doped TiO2 assisted in the adsorption of methyl orange (MO), assisting in photodegradation. Only the anatase phase of TiO2 was observed at calcination temperatures between 250 and 400 °C. Photoluminescence analysis revealed that a lower carbon content and slightly higher calcination temperature resulted in better interfacial charge separation and transfer efficiency. The 10 wt% C-doped TiO2 calcined at 300 °C demonstrated the best MO photodegradation efficiency of 62.1% under visible light illumination. 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/20236energy efficientcarbon-doped tio2wastewater treatmentgreen synthesisphotodegradation |
| spellingShingle | Xinying Han Yubei Guo Chien Yong Goh Cheng Loong Ngan Jian Ping Tan Peng Chee Tan Sin Yuan Lai Energy-efficient Carbon-doped TiO2 for Visible Light Degradation of Methyl Orange: Preparation, Performance, and Mechanism Bulletin of Chemical Reaction Engineering & Catalysis energy efficient carbon-doped tio2 wastewater treatment green synthesis photodegradation |
| title | Energy-efficient Carbon-doped TiO2 for Visible Light Degradation of Methyl Orange: Preparation, Performance, and Mechanism |
| title_full | Energy-efficient Carbon-doped TiO2 for Visible Light Degradation of Methyl Orange: Preparation, Performance, and Mechanism |
| title_fullStr | Energy-efficient Carbon-doped TiO2 for Visible Light Degradation of Methyl Orange: Preparation, Performance, and Mechanism |
| title_full_unstemmed | Energy-efficient Carbon-doped TiO2 for Visible Light Degradation of Methyl Orange: Preparation, Performance, and Mechanism |
| title_short | Energy-efficient Carbon-doped TiO2 for Visible Light Degradation of Methyl Orange: Preparation, Performance, and Mechanism |
| title_sort | energy efficient carbon doped tio2 for visible light degradation of methyl orange preparation performance and mechanism |
| topic | energy efficient carbon-doped tio2 wastewater treatment green synthesis photodegradation |
| url | https://journal.bcrec.id/index.php/bcrec/article/view/20236 |
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