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Wei X, Zhu N, Xian J, Wu P, Dang Z. Enhanced removal of tetracycline in light-dark tandem by FeCu-doped carbon composites derived from waste cotton fabrics. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 950:175402. [PMID: 39127206 DOI: 10.1016/j.scitotenv.2024.175402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 07/11/2024] [Accepted: 08/07/2024] [Indexed: 08/12/2024]
Abstract
It is of great significance to develop an energy-efficient and external oxidant-free strategy for antibiotics removal. In this study, the novel light-dark tandem strategy was established to enhance tetracycline (TC) removal by bifunctional FeCu-doped carbon composites (FeCu@BC) derived from waste cotton fabrics. Interestingly, over 95 % TC was removed by FeCu@BC under light alone and dark alone in 10 min, with the same preferred conditions of pH 7.50 and 0.04 g/L catalyst dosage. Surprisingly, the enhanced mineralization efficiency of TC was achieved by the light-dark tandem without adjusting the parameters as 86.65 %, which was 1.13, 1.46 and 2.12 times higher than those of the dark-light tandem, light alone and dark alone, respectively. The mechanisms were elucidated as that 83.28 % direct degradation and 4.37 % indirect degradation under light while 47.63 % direct degradation and 24.16 % indirect degradation under darkness contributed for TC removal. The synergetic effects of persistent free radicals (PFRs) and FeCu interactions enabled FeCu@BC to work efficiently under both light and darkness, and light enhanced electron transfer between PFRs and FeCu interactions. Furthermore, energetic electrons stored in these active sites under light could be extracted to enhance electron transfer under subsequent darkness and the strongly catalytically active species initiated under light remained in action after cessation of light. Finally, high molecular TC was easily decomposed by energetic photo-catalysis and low molecular intermediates were mineralized under subsequent enhanced dark-catalysis to increase the mineralization efficiency. In general, this study provided an eco-friendly organics removal strategy and mechanisms insights based on the natural day-night cycle.
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Affiliation(s)
- Xiaorong Wei
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Nengwu Zhu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Cluster, Ministry of Education, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, Guangzhou 510006, PR China; Guangdong Environmental Protection Key Laboratory of Solid Waste Treatment and Recycling, Guangzhou 510006, PR China.
| | - Jinchan Xian
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, PR China
| | - Pingxiao Wu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Cluster, Ministry of Education, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, Guangzhou 510006, PR China; Guangdong Environmental Protection Key Laboratory of Solid Waste Treatment and Recycling, Guangzhou 510006, PR China
| | - Zhi Dang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Cluster, Ministry of Education, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, Guangzhou 510006, PR China; Guangdong Environmental Protection Key Laboratory of Solid Waste Treatment and Recycling, Guangzhou 510006, PR China
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Xu W, Qin R, Cao G, Qiang Y, Lai M, Lu Y. Magnetic composite photocatalyst NiFe₂O₄/ZnIn₂S₄/biochar for efficient removal of antibiotics in water under visible light: Performance, mechanism and pathway. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 360:124602. [PMID: 39079654 DOI: 10.1016/j.envpol.2024.124602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 07/12/2024] [Accepted: 07/22/2024] [Indexed: 08/02/2024]
Abstract
The widespread presence of antibiotics in aquatic environments, resulting from excessive use and accumulation, has raised significant concerns. A NiFe₂O₄/ZnIn₂S₄/Biochar (NFO/ZIS/BC) magnetic nanocomposite was successfully synthesized, demonstrating significantly enhanced electron-hole separation properties. Comprehensive investigations were conducted to evaluate the impact of various parameters, including catalyst mass, pH, and the presence of co-existing ions on the composite's performance. The nanoparticles of NiFe₂O₄ (NFO) and ZnIn₂S₄ (ZIS) were found to improve the surface stability and sulfamethoxazole removal capabilities of porous biochar, while also demonstrating high total organic carbon removal efficiencies. •O₂⁻ and h⁺ were identified as the predominant reactive oxygen species (ROS) in NFO/ZIS/BC-4 during the degradation process. The degradation outcomes of sulfamethoxazole under natural sunlight and water conditions were consistent with laboratory findings, affirming the robust applicative potential of NFO/ZIS/BC. Density functional theory (DFT) calculations were performed to elucidate the photocatalytic mechanism and identify potential intermediate products. Additionally, the types of heterojunctions present in the system were characterized and discussed. After multiple iterations, NFO/ZIS/BC-4 maintained effective photodegradation capabilities through five cycles. This study presents an effective method for the treatment of antibiotics in aquatic environments, offering significant potential for environmental applications.
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Affiliation(s)
- Wan Xu
- School of Land and Resources Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650031 China
| | - Ronggao Qin
- School of Land and Resources Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650031 China; Key Laboratory of Geohazard Forecast and Geoecological Restoration in Plateau Mountainous Area, Ministry of Natural Resources of the People's Republic of China Kunming, Yunnan, 650228, China.
| | - Guangzhu Cao
- School of Land and Resources Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650031 China; Key Laboratory of Geohazard Forecast and Geoecological Restoration in Plateau Mountainous Area, Ministry of Natural Resources of the People's Republic of China Kunming, Yunnan, 650228, China
| | - Yi Qiang
- School of Land and Resources Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650031 China; Key Laboratory of Geohazard Forecast and Geoecological Restoration in Plateau Mountainous Area, Ministry of Natural Resources of the People's Republic of China Kunming, Yunnan, 650228, China
| | - Meidan Lai
- School of Land and Resources Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650031 China
| | - Yanfeng Lu
- School of Land and Resources Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650031 China; Key Laboratory of Geohazard Forecast and Geoecological Restoration in Plateau Mountainous Area, Ministry of Natural Resources of the People's Republic of China Kunming, Yunnan, 650228, China
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Hu Z, Tang X, Ma X, Guo SQ, Zhen M, Ning J, Xu S, Shen B. Development of natural attapulgite derived ferromanganese spinel oxides as heterogeneous catalysts for persulfate activation of tetracycline degradation. CHEMOSPHERE 2024; 352:141428. [PMID: 38340999 DOI: 10.1016/j.chemosphere.2024.141428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 02/05/2024] [Accepted: 02/07/2024] [Indexed: 02/12/2024]
Abstract
Ferromanganese spinel oxides (MnFe2O4, MFO) have been proven effective in activating persulfate for pollutants removal. However, their inherent high surface energy often leads to agglomeration, diminishing active sites and consequently restricting catalytic performance. In this study, using Al-MCM-41 (MCM) mesoporous molecular sieves derived from natural attapulgite as a support, the MFO/MCM composite was synthesized through dispersing MnFe2O4 nanoparticles on MCM carrier by a simple hydrothermal method, which can effectively activate persulfate (PS) to degrade Tetracycline (TC). The addition of Al-MCM-41 can effectively improve the specific surface area and adsorption performance of MnFe2O4, but also reduce the leaching amount of metal ions. The MFO/MCM composite exhibited superior catalytic reactivity towards PS and 84.3% removal efficiency and 64.7% mineralization efficiency of TC (20 mg/L) was achieved in 90 min under optimized conditions of 0.05 mg/L catalyst dosage, 5 mM PS concentration, room temperature and no adjustment of initial pH. The effects of various stoichiometric MFO/MCM ratio, catalyst dosage, PS concentration, initial pH value and co-existing ions on the catalytic performance were investigated in detail. Moreover, the possible reaction mechanism in MFO-MCM/PS system was proposed based on the results of quenching tests, electron paramagnetic resonance (EPR) and XPS analyses. Finally, major degradation intermediates of TC were detected by liquid chromatography mass spectrometry technologies (LC-MS) and four possible degradation pathways were proposed. This study enhances the design approach for developing highly efficient, environmentally friendly and low-cost catalysts for the advanced treatment process of antibiotic wastewater.
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Affiliation(s)
- Zhenzhong Hu
- Hebei Engineering Research Center of Pollution Control in Power System, Tianjin 300401, China; Tianjin Key Laboratory of Clean Energy and Pollutant Control, Tianjin 300401, China; School of Energy and Environmental Engineering, Hebei University of Technology, China
| | - Xuejing Tang
- Hebei Engineering Research Center of Pollution Control in Power System, Tianjin 300401, China; Tianjin Key Laboratory of Clean Energy and Pollutant Control, Tianjin 300401, China; School of Energy and Environmental Engineering, Hebei University of Technology, China
| | - Xiaojia Ma
- Hebei Engineering Research Center of Pollution Control in Power System, Tianjin 300401, China; Tianjin Key Laboratory of Clean Energy and Pollutant Control, Tianjin 300401, China; School of Energy and Environmental Engineering, Hebei University of Technology, China
| | - Sheng-Qi Guo
- Hebei Engineering Research Center of Pollution Control in Power System, Tianjin 300401, China; Tianjin Key Laboratory of Clean Energy and Pollutant Control, Tianjin 300401, China; School of Energy and Environmental Engineering, Hebei University of Technology, China
| | - Mengmeng Zhen
- Hebei Engineering Research Center of Pollution Control in Power System, Tianjin 300401, China; Tianjin Key Laboratory of Clean Energy and Pollutant Control, Tianjin 300401, China; School of Energy and Environmental Engineering, Hebei University of Technology, China.
| | - Jingxia Ning
- Hebei Engineering Research Center of Pollution Control in Power System, Tianjin 300401, China; Tianjin Key Laboratory of Clean Energy and Pollutant Control, Tianjin 300401, China; School of Energy and Environmental Engineering, Hebei University of Technology, China
| | - Sheng Xu
- Hebei Engineering Research Center of Pollution Control in Power System, Tianjin 300401, China; Tianjin Key Laboratory of Clean Energy and Pollutant Control, Tianjin 300401, China; School of Energy and Environmental Engineering, Hebei University of Technology, China
| | - Boxiong Shen
- Hebei Engineering Research Center of Pollution Control in Power System, Tianjin 300401, China; Tianjin Key Laboratory of Clean Energy and Pollutant Control, Tianjin 300401, China; School of Energy and Environmental Engineering, Hebei University of Technology, China.
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Wang Q, Zhu F, Cheng H, Komarneni S, Ma J. Efficient activation of persulfate by Ti 3C 2 MXene QDs modified ZnFe 2O 4 for the rapid degradation of tetracycline. CHEMOSPHERE 2023; 328:138546. [PMID: 37019395 DOI: 10.1016/j.chemosphere.2023.138546] [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: 02/08/2023] [Revised: 03/27/2023] [Accepted: 03/28/2023] [Indexed: 06/19/2023]
Abstract
Mxene-based catalysts with specific interfacial characteristics are beneficial for photocatalytic applications. Herein, Ti3C2 MXene modified ZnFe2O4 nanocomposite materials were prepared for photocatalysis. The morphology and structure of the nanocmposites were characterized by scanning electron microscopy (SEM), High-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS), which revealed that Ti3C2 MXene as quantum dots (QDs) was uniformly distributed on the ZnFe2O4 surface. The Ti3C2 QDs modified ZnFe2O4 catalyst (ZnFe2O4/MXene-15%) under visible light achieved 87% degradation efficiency of tetracycline within 60 min when coupled with persulfate (PS) system. The initial solution pH, PS dosage and co-existing ions were found to be the main factors affecting the heterogeneous oxidation process, while quenching experiments showed that O2•- is the main oxidizing species in the removal of tetracycline in ZnFe2O4/MXene-PS system. In addition, the cyclic experiments suggested that ZnFe2O4/MXene had good stability and thus it may have practical applications in industry.
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Affiliation(s)
- Qi Wang
- School of Environmental Science and Engineering, Changzhou University, Jiangsu, 213164, China
| | - Fang Zhu
- School of Environmental Science and Engineering, Changzhou University, Jiangsu, 213164, China
| | - Hao Cheng
- Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Guangxi, 545006, China
| | - Sridhar Komarneni
- Department of Ecosystem Science and Management and Materials Research Institute, 204 Materials Research Laboratory, The Pennsylvania State University, University Park, PA, 16802, USA.
| | - Jianfeng Ma
- School of Environmental Science and Engineering, Changzhou University, Jiangsu, 213164, China.
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Degradation of tetracycline using persulfate activated by a honeycomb structured S-doped g-C3N4/biochar under visible light. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121833] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Zhang X, Yuan N, Chen T, Li B, Wang Q. Fabrication of hydrangea-shaped Bi 2WO 6/ZIF-8 visible-light responsive photocatalysts for degradation of methylene blue. CHEMOSPHERE 2022; 307:135949. [PMID: 35961452 DOI: 10.1016/j.chemosphere.2022.135949] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 07/30/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
In this paper, the hydrangea-shaped Bi2WO6/ZIF-8 (BWOZ) visible light photocatalysts have been prepared via a facile synthetic strategy for the first time. The constructed BWOZ composites were systematically studied by a series of characterization techniques. The SEM results manifested the octahedral ZIF-8 coated the flower-like Bi2WO6 uniformly and the composition of BWOZ composites had been confirmed by XPS measurement. And the photocatalytic activity was evaluated by eliminating methylene blue with the help of visible light. The results showed that 7%-BWOZ (7.0 wt% Bi2WO6) exhibited better photodegradation capability than pure Bi2WO6 and ZIF-8. Compared with Bi2WO6, the photocatalytic degradation of methylene blue by 7%-BWOZ could reach 85.7%. In addition, the pseudo-first-order kinetic constant of 7%-BWOZ was 23.00 and 1.61 times that of pristine Bi2WO6 and ZIF-8, respectively. The improved photocatalytic ability of BWOZ systems may be due to the construction of heterojunctions between Bi2WO6 and ZIF-8, which resulted in the rapid separation of photogenerated carriers. Additionally, the specific surface area of the formed BWOZ system was also improved in comparison with the flower-shaped Bi2WO6, and thus more active sites could be provided to contact with methylene blue molecules, thereby achieving better removal capacity. Moreover, trapping experiments and electron spin resonance results further illustrated that the coexistence of multiple free radicals realized efficient degradation of methylene blue. More importantly, the photocatalytic property of the 7%-BWOZ composite remained even after three cycles. Furthermore, a feasible photodegradation mechanism was also explored in depth.
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Affiliation(s)
- Xinling Zhang
- School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China
| | - Ning Yuan
- School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China.
| | - Tianxiang Chen
- School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China
| | - Bowen Li
- School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China
| | - Qibao Wang
- School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China
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