1School of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor, Malaysia
2Department of Mathematics, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor, Malaysia
3College of Chemistry and Chemical Engineering, Xiamen University, 361005 Xiamen, China
BibTex Citation Data :
@article{BCREC20236, author = {Xinying Han and Yubei Guo and Chien Yong Goh and Cheng Loong Ngan and Jian Ping Tan and Peng Chee Tan and Sin Yuan Lai}, title = {Energy-efficient Carbon-doped TiO2 for Visible Light Degradation of Methyl Orange: Preparation, Performance, and Mechanism}, journal = {Bulletin of Chemical Reaction Engineering & Catalysis}, volume = {19}, number = {4}, year = {2024}, keywords = {energy efficient; carbon-doped TiO2; wastewater treatment; green synthesis; photodegradation}, abstract = { Water pollution caused by textile dyes has become a serious issue, making the treatment of sewage urgent. Carbon-doped TiO 2 (C-doped TiO 2 ), 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 TiO 2 . Therefore, citric acid, a triprotic, hexadentate carboxylic acid, was used to dope TiO 2 through solvothermal-calcination. The effects of carbon content and calcination temperature on the photodegradation performance of C-doped TiO 2 were investigated. The band gap energy of C-doped TiO 2 was found to be narrower (2.67 eV) than that of undoped TiO 2 (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 TiO 2 assisted in the adsorption of methyl orange (MO), assisting in photodegradation. Only the anatase phase of TiO 2 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 TiO 2 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 ). }, issn = {1978-2993}, pages = {692--709} doi = {10.9767/bcrec.20236}, url = {https://journal.bcrec.id/index.php/bcrec/article/view/20236} }
Refworks Citation Data :
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).
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