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Limpachanangkul P, Nimmmanterdwong P, Liu L, Hunsom M, Pruksathorn K, Piumsomboon P, Chalermsinsuwan B. Glycerol photocatalytic oxidation to higher value-added compounds via bismuth oxyhalide photocatalysts. Sci Rep 2023; 13:14936. [PMID: 37697062 PMCID: PMC10495431 DOI: 10.1038/s41598-023-42246-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 09/07/2023] [Indexed: 09/13/2023] Open
Abstract
Bismuth oxyhalides (BiOX) including BiOCl, BiOBr, and BiOI, were well synthesized using solvothermal technique and then used in the aqueous phase photooxidation of glycerol as a catalyst. The as-synthesized BiOBr could achieve the highest glycerol transformation of around 85.6% in 8 h under ultraviolet light (UV) irradiation among as-synthesized BiOXs. Moreover, the BiOBr/TiO2 heterojunction was also prepared through an ethylene glycol-assisted solvothermal process. This new BiOBr/TiO2 heterostructure exhibited excellent photocatalytic activity (97.4%) for the oxidation of glycerol compared with pure BiOBr (74%) under ultraviolet light irradiation at 6 h. This obtained behavior was confirmed by more produced OH• radicals of BiOBr/TiO2.
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Affiliation(s)
- Paphada Limpachanangkul
- Fuels Research Center, Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand
| | - Prathana Nimmmanterdwong
- Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Salaya, Nakhon Pathom, 73170, Thailand
| | - Licheng Liu
- Key Laboratory of Marine Chemistry Theory and Technology (Ministry of Education), College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, Shandong, China
| | - Mali Hunsom
- Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Salaya, Nakhon Pathom, 73170, Thailand
| | - Kejvalee Pruksathorn
- Fuels Research Center, Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand
| | - Pornpote Piumsomboon
- Fuels Research Center, Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand
| | - Benjapon Chalermsinsuwan
- Fuels Research Center, Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand.
- Center of Excellence On Petrochemical and Materials Technology, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand.
- Advanced Computational Fluid Dynamics Research Unit, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand.
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Eskandari P, Amarloo E, Zangeneh H, Rezakazemi M, Zamani MR, Aminabhavi TM. Photocatalytic activity of visible-light-driven L-Proline-TiO 2/BiOBr nanostructured materials for dyes degradation: The role of generated reactive species. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 326:116691. [PMID: 36402013 DOI: 10.1016/j.jenvman.2022.116691] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 10/31/2022] [Accepted: 11/01/2022] [Indexed: 06/16/2023]
Abstract
L-Proline (2%)-TiO2/BiOBr (30%) nanocomposite was synthesized to obtain high photocatalytic performance in the visible light region and infrared radiation(IR) for methylene blue (MB) and congo red (CR) removal from the contaminated wastewater. L-Proline (2%)-TiO2/BiOBr (30%) photocatalyst with strong absorption near IR wavelength and high charge separation ability was fabricated for the first time. X-ray diffraction (XRD), Fourier transform infrared (FTIR), field-emission scanning electron microscope (FESEM)/Energy Dispersive X-ray (EDX), UV-Vis diffuse reflectance spectrum (DRS), photoluminescence (PL) and Brunauer-Emmett-Teller (BET) characterization techniques show that the visible driven nanocomposite was successfully synthesized. According to the UV-DRS analysis, the estimated band gaps for the L-proline (2%)-TiO2 and L-Proline (2%)-TiO2/BiOBr (30%) nanostructures were respectively 2.3 eV and 2.1 eV.The nanoparticles exhibited enhanced photocatalytic activity (93-100%) and high mineralization efficiency (71-89% TOC removal) for both the dyes. The best photocatalytic activity was achieved by adding 2 wt% of L-Proline and 30 wt% of BiOBr into TiO2 sol. Response surface methodology (RSM) was employed to find significant parameters and their optimum values for maximum degradation, which show pH, dye concentration, irradiation time, and catalyst dosage for both the dyes are significant. The best photocatalytic degradation efficiency was achieved at the optimum conditions of pH = 7.7, catalyst dosage = 0.71 g/L, irradiation time = 142 and dye concentration = 11 mg/L for MB. Scavenger study showed that •OH radicals are responsible for the degradation process.
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Affiliation(s)
- Parisa Eskandari
- Department of Chemical Engineering, Faculty of Engineering, University of Isfahan, Isfahan, Iran
| | - Ehsan Amarloo
- Department of Chemical Engineering, Sharif University of Technology, Tehran, Iran
| | - Hadis Zangeneh
- Department of Chemical Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran.
| | - Mashallah Rezakazemi
- Faculty of Chemical and Materials Engineering, Shahrood University of Technology, Shahrood, Iran.
| | | | - Tejraj M Aminabhavi
- School of Advanced Sciences, KLE Technological University, Hubballi, Karnataka, 580 031, India; School of Engineering, UPES, Bidholi, Uttarakhand, Dehradun, 248 007, India.
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Han B, Li X, Zhang Z, Wang H, Yu K, Liang C. A novel strategy to research the mechanism of rutile TiO 2with excellent photocatalytic performance. NANOTECHNOLOGY 2021; 33:035704. [PMID: 34614489 DOI: 10.1088/1361-6528/ac2d4a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 10/06/2021] [Indexed: 06/13/2023]
Abstract
This study reported a novel method to obtain rutile TiO2with excellent photocatalytic activity for degradation of organic dyes. In this study, the concentrated HCl was selected as the inhibitor to make TiO2precursor hardly hydrolyzed at room temperature. And a certain amount of urea was added, which results in TiO2precursor hydrolyzed to produce rutile TiO2due to urea thermally decomposed into alkaline substances to neutralize the concentrated HCl. To further explore the mechanism of excellent photocatalytic performance of rutile TiO2, a series of experiments, characterizations, and DFT computations were carried out. Based on DFT computations and experimental results, it could be concluded that the introduction of surface oxygen vacancies was the main reason for the excellent photocatalytic performance of the samples, and the concentration of surface oxygen vacancies would affect the physical and chemical properties of rutile TiO2. Meaningfully, this unique and innovative work broke the traditional preconception of rutile TiO2and provided a theoretical possibility for rutile TiO2to be applied in other research fields.
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Affiliation(s)
- Bin Han
- Key Laboratory of automobile Materials, Ministry of Education, and College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China
- Roll Forging Research Institute, Jilin University, Changchun 130025, Jilin, People's Republic of China
| | - Xiangji Li
- Key Laboratory of automobile Materials, Ministry of Education, and College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China
- Roll Forging Research Institute, Jilin University, Changchun 130025, Jilin, People's Republic of China
| | - Zhiming Zhang
- Key Laboratory of automobile Materials, Ministry of Education, and College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China
| | - Hongyang Wang
- Key Laboratory of automobile Materials, Ministry of Education, and College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China
| | - Kaifeng Yu
- Key Laboratory of automobile Materials, Ministry of Education, and College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China
| | - Ce Liang
- Key Laboratory of automobile Materials, Ministry of Education, and College of Materials Science and Engineering, Jilin University, Changchun 130025, People's Republic of China
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