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Mishra NS, Kuila A, Saravanan P, Bahnemann D, Jang M, Routu S. Simultaneous S-scheme promoted Ag@AgVO 3/g-C 3N 4/CeVO 4 heterojunction with enhanced charge separation and photo redox ability towards solar photocatalysis. CHEMOSPHERE 2023; 326:138496. [PMID: 36965528 DOI: 10.1016/j.chemosphere.2023.138496] [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: 12/20/2022] [Revised: 03/08/2023] [Accepted: 03/21/2023] [Indexed: 06/18/2023]
Abstract
Photocatalytic removal of toxic contaminants is one of the emerging techniques for water remediation, but it suffers from low redox ability, charge recombination and poor light harvesting efficiency. The present work reports a simultaneous S-scheme promoted by CeVO4/g-C3N4/Ag@AgVO3. The formation of the S-scheme mechanism enhanced the generation of photogenerated carriers and also improved the redox ability of the electrons and holes in the reduction and oxidation photocatalysts. The ternary demonstrated remarkable photo switching properties along with efficient charge separation which was achieved through dual interfacial interaction within the ternary (Ag@AgVO3/g-C3N4 and CeVO4/g-C3N4). The heterojunction formation was verified through the shift in binding energy spectra in the X-ray Photoelectron spectroscopy (XPS), and high-resolution transmission electron microscopy analysis (HR-TEM). The ternary demonstrated reduced PL intensity, width of space charge region and an upsurge in photogenerated current density in the order of 93 μA/cm2 (∼6X higher than all the pristine). This resulted in efficient removal of methyl orange, methylene blue and endocrine disruptive bisphenol-A with a removal rate of 0.02 min-1, 0.03 min-1 and 0.0087 min-1 and an apparent quantum yield of 4.6 × 10-9 (Methylene Orange), 6.89 × 10-9 (Methylene Blue) and 2 × 10-9 (Bisphenol A/H2O2).
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Affiliation(s)
- Nirmalendu S Mishra
- Environmental Nanotechnology Laboratory, Department of Environmental Science and Engineering, Indian Institute of Technology (ISM), Dhanbad, 826004, Jharkhand, India
| | - Aneek Kuila
- Department of Chemical Engineering, Technion-Israel Institute of Technology, Haifa, Israel
| | - Pichiah Saravanan
- Environmental Nanotechnology Laboratory, Department of Environmental Science and Engineering, Indian Institute of Technology (ISM), Dhanbad, 826004, Jharkhand, India.
| | - Detlef Bahnemann
- Institut Fuer Technische Chemie, Gottfried Wilhelm Leibniz Universitaet Hannover, Callinstrasse 3, D-30167, Hannover, Germany; Laboratory of Photoactive Nanocomposite Materials, Saint-Petersburg State University, Ulyanovskaya Str. 1, Peterhof, Saint-Petersburg, 198504, Russia
| | - Min Jang
- Department of Environmental Engineering, Kwangwoon University, 447-1, Wolgye-dong Nowon-Gu, Seoul, South Korea
| | - Santosh Routu
- Department of Electronics and Communication Engineering Geethanjali College of Engineering and Technology, Cheeryal Village, Keesara Mandal, Hyderabad, Telangana, India
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Mansor ES, El Shall FN, Radwan EK. Simultaneous decolorization of anionic and cationic dyes by 3D metal-free easily separable visible light active photocatalyst. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:10775-10788. [PMID: 36083362 PMCID: PMC9898404 DOI: 10.1007/s11356-022-22838-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 08/29/2022] [Indexed: 06/15/2023]
Abstract
To overcome the hard and costly post-treatment separation of ultrathin graphitic carbon nitride nanosheets (UGCN), it was supported on polyurethane foam (PUF). The ratio of PUF/UGCN was optimized for the removal of a mixture of methylene blue (MB) and methyl orange (MO) dyes. The characteristics of the composite photocatalyst and its photocatalytic performance were detailly studied. The X-ray diffraction and Fourier transform infrared results proved the successful preparation of UGCN and PUF and that the PUF/UGCN composite combines the features of both pure materials. The transmission electron microscopy illustrated the ultrathin nanosheet shape of the UGCN, while the scanning electron microscope showed the highly porous 3D-hierarchical structure of PUF. Compared to the pure components, the composite photocatalyst with PUF/UGCN mass ratio of 4 achieved better decolorization of MO and almost same decolorization of MB as UGCN. Neutral pH and 1 g/L of the composite photocatalyst were the optimum conditions for MB/MO mixture decolorization. The composite photocatalyst kept its efficiency for five successive cycles. Hydroxyl radicals were the dominant in the degradation of MB, while superoxide radicals were the most influencer in MO degradation. Conclusively, supporting UGCN onto PUF kept the photocatalytic efficiency of UGCN toward MB decolorization and improved its efficiency toward MO. Moreover, it enabled the reuse of the composite photocatalyst and facilitated the post-treatment separation process.
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Affiliation(s)
- Eman S Mansor
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St, Dokki, Giza, 12622, Egypt
| | - Fatma N El Shall
- Dyeing, Printing and Textile Auxiliary Department, Textile Research and Technology Institute, National Research Centre, El-Buhouth St. 33, Dokki, Cairo, 12622, Egypt
| | - Emad K Radwan
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St, Dokki, Giza, 12622, Egypt.
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Balakrishnan A, Chinthala M, Polagani RK, Vo DVN. Removal of tetracycline from wastewater using g-C 3N 4 based photocatalysts: A review. ENVIRONMENTAL RESEARCH 2023; 216:114660. [PMID: 36368373 DOI: 10.1016/j.envres.2022.114660] [Citation(s) in RCA: 30] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 09/19/2022] [Accepted: 10/22/2022] [Indexed: 06/16/2023]
Abstract
Tetracycline is currently one of the most consumed antibiotics for human therapy, veterinary purpose, and agricultural activities. Tetracycline worldwide consumption is expected to rise by about more than 30% by 2030. The persistence of tetracycline has necessitated implementing and adopting strategies to protect aquatic systems and the environment from noxious pollutants. Here, graphitic carbon nitride-based photocatalytic technology is considered because of higher visible light photocatalytic activity, low cost, and non-toxicity. Thus, this review highlights the recent progress in the photocatalytic degradation of tetracycline using g-C3N4-based photocatalysts. Additionally, properties, worldwide consumption, occurrence, and environmental impacts of tetracycline are comprehensively addressed. Studies proved the occurrence of tetracycline in all water matrices across the world with a maximum concentration of 54 μg/L. Among different g-C3N4-based materials, heterojunctions exhibited the maximum photocatalytic degradation of 100% with the reusability of 5 cycles. The photocatalytic membranes are found to be feasible due to easiness in recovery and better reusability. Limitations of g-C3N4-based wastewater treatment technology and efficient solutions are also emphasized in detail.
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Affiliation(s)
- Akash Balakrishnan
- Process Intensification Laboratory, Department of Chemical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, 769 008, India
| | - Mahendra Chinthala
- Process Intensification Laboratory, Department of Chemical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, 769 008, India.
| | - Rajesh Kumar Polagani
- Department of Chemical Engineering, Bheemanna Khandre Institute of Technology, Bhalki, India
| | - Dai-Viet N Vo
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN), Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam.
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Linh NXD, Hanh NT, Cuong LM, Huong NT, Ha NTT, Trinh TD, Van Noi N, Cam NTD, Pham TD. Facile Fabrication of α-Fe2O3/g-C3N4 Z Scheme Heterojunction for Novel Degradation of Residual Tetracycline. Top Catal 2022. [DOI: 10.1007/s11244-022-01751-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Yao J, Huang L, Li Y, Liu J, Liu J, Shu S, Huang L, Zhang Z. Facile synthesizing Z-scheme Bi 12O 15Cl 6/InVO 4 heterojunction to effectively degrade pollutants and antibacterial under light-emitting diode light. J Colloid Interface Sci 2022; 627:224-237. [PMID: 35849856 DOI: 10.1016/j.jcis.2022.07.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 06/21/2022] [Accepted: 07/04/2022] [Indexed: 10/17/2022]
Abstract
The design of a photocatalytic system with Z-scheme heterojunction is the key to charge separation. In this paper, a simple synthesis method was used to prepare Bi12O15Cl6/InVO4 photocatalyst. The synthesized photocatalyst can effectively degrade pollutants, and inactivate bacteria under LED light irradiation. The optimal ratio of 30% Bi12O15Cl6/InVO4 material effectively degraded 78.85% of TC and 97.83% of RhB within 90 min and inactivated Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) in 40 min. This improvement in photocatalytic performance is mainly due to the formation of a Z-scheme heterojunction between Bi12O15Cl6 and InVO4, which produces effective charge separation and improves photocatalytic degradation and antibacterial activity. The capture experiment revealed the main active substances. The effects of catalyst dosage and pollutant concentration were investigated in details. The intermediates of TC degradation were identified by mass spectrometry (MS), and the possible photocatalytic degradation pathway was proposed. Capture experiment and related measurements proposed the Z-scheme mechanism. This work emphasizes the importance of heterogeneous structure construction and proposes feasible solutions for the rational design of catalysts with photodegradation and antibacterial properties under LED light.
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Affiliation(s)
- Jiao Yao
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Liying Huang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.
| | - Yeping Li
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Jiawei Liu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Juan Liu
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Shuangxiu Shu
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Lijing Huang
- Institute of Micro-Nano Optoelectronic and Terahertz Technology, Jiangsu University, Zhenjiang 212013, P. R. China.
| | - Zijin Zhang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
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Hanh NT, Khai NM, Anh TN, Vinh LT, Huan NH, Pham TD. TiO
2
deposited on activated sewage sludge for effective photocatalytic degradation of tetracycline. Chem Eng Technol 2022. [DOI: 10.1002/ceat.202200075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nguyen Thi Hanh
- Faculty of Environmental Sciences, Hanoi University of Science Vietnam National University 334 D. Nguyen Trai, Thanh Xuan Trung Hanoi 100000 Vietnam
| | - Nguyen Manh Khai
- Faculty of Environmental Sciences, Hanoi University of Science Vietnam National University 334 D. Nguyen Trai, Thanh Xuan Trung Hanoi 100000 Vietnam
| | - Tran Nam Anh
- Faculty of Environmental Sciences, Hanoi University of Science Vietnam National University 334 D. Nguyen Trai, Thanh Xuan Trung Hanoi 100000 Vietnam
| | - Le Thi Vinh
- Faculty of Environmental Sciences, Hanoi University of Science Vietnam National University 334 D. Nguyen Trai, Thanh Xuan Trung Hanoi 100000 Vietnam
| | - Nguyen Huu Huan
- Faculty of Environmental Sciences, Hanoi University of Science Vietnam National University 334 D. Nguyen Trai, Thanh Xuan Trung Hanoi 100000 Vietnam
| | - Thanh-Dong Pham
- VNU Key Laboratory of Advanced Materials for Green Growth, Faculty of Chemistry, University of Science Vietnam National University 334 D. Nguyen Trai, Thanh Xuan Trung Hanoi 100000 Vietnam
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