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John KI, Ho G, Li D. Recent progresses in synthesis and modification of g-C 3N 4 for improving visible-light-driven photocatalytic degradation of antibiotics. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2024; 89:3047-3078. [PMID: 38877630 DOI: 10.2166/wst.2024.166] [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: 03/07/2024] [Accepted: 05/11/2024] [Indexed: 06/16/2024]
Abstract
Graphitic carbon nitride (g-C3N4) is a widely studied visible-light-active photocatalyst for low cost, non-toxicity, and facile synthesis. Nonetheless, its photocatalytic efficiency is below par, due to fast recombination of charge carriers, low surface area, and insufficient visible light absorption. Thus, the research on the modification of g-C3N4 targeting at enhanced photocatalytic performance has attracted extensive interest. A considerable amount of review articles have been published on the modification of g-C3N4 for applications. However, limited effort has been specially contributed to providing an overview and comparison on available modification strategies for improved photocatalytic activity of g-C3N4-based catalysts in antibiotics removal. There has been no attempt on the comparison of photocatalytic performances in antibiotics removal between modified g-C3N4 and other known catalysts. To address these, our study reviewed strategies that have been reported to modify g-C3N4, including metal/non-metal doping, defect tuning, structural engineering, heterostructure formation, etc. as well as compared their performances for antibiotics removal. The heterostructure formation was the most widely studied and promising route to modify g-C3N4 with superior activity. As compared to other known photocatalysts, the heterojunction g-C3N4 showed competitive performances in degradation of selected antibiotics. Related mechanisms were discussed, and finally, we revealed current challenges in practical application.
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Affiliation(s)
- Kingsley Igenepo John
- College of Science, Technology, Engineering & Mathematics, Murdoch University, Murdoch, WA 6150, Australia
| | - Goen Ho
- College of Science, Technology, Engineering & Mathematics, Murdoch University, Murdoch, WA 6150, Australia
| | - Dan Li
- College of Science, Technology, Engineering & Mathematics, Murdoch University, Murdoch, WA 6150, Australia E-mail:
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Rajamani M, Jeyaprakash JS, Madhavan J, Neppolian B. Turning trash to treasure: Innovative use of exhausted desiccant waste supported zinc indium sulphide for sustainable photocatalytic abatement of tetracycline. CHEMOSPHERE 2024; 349:140969. [PMID: 38114024 DOI: 10.1016/j.chemosphere.2023.140969] [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: 06/30/2023] [Revised: 11/21/2023] [Accepted: 12/12/2023] [Indexed: 12/21/2023]
Abstract
Employing an affordable and sustainable visible-light-driven system is crucial for organic pollutant abatement, in the field of photocatalysis. In the present investigation, a pioneering photocatalyst zinc indium sulphide, ZnIn2S4 (ZIS) supported on a silica gel matrix, SiO2 (SG) which is the leftover material after multiple rounds of dehumidification processes, was synthesized. The fabrication of the heterojunction facilitated enhancement in light absorption and charge separation efficiency. The photocatalytic performance was evaluated through the degradation of tetracycline (TC) under light irradiation. The nano-photocatalyst experienced detailed analysis using spectroscopic and microscopic methods. The ZIS/SG catalyst exhibited remarkable efficiency in degrading TC under visible light conditions, achieving a nearly 98-99% degradation. This performance surpassed the degradation rates of the original ZIS and SG catalysts by 3.6 and 4.45 times, respectively. Additionally, the catalyst was effectively used to control TC levels in real-time within pharmaceutical plant effluent, resulting in a degradation efficiency of 78.2%. With affordability, enhanced TC mineralization, and recyclability for up to six runs (efficiency ∼ 85%), the ZIS/SG photocatalyst exhibits desirable qualities of an ideal one. This innovative nano-photocatalyst introduces new possibilities for improving the process of photocatalytic decontamination of tenacious emerging pollutants by providing satisfactory reusability and stability.
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Affiliation(s)
- Manju Rajamani
- Energy and Environmental Remediation Lab, Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India
| | - Jenson Samraj Jeyaprakash
- Energy and Environmental Remediation Lab, Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India
| | - Jagannathan Madhavan
- Solar Energy Lab, Department of Chemistry, Thiruvalluvar University, Vellore, 632 115, India
| | - Bernaurdshaw Neppolian
- Energy and Environmental Remediation Lab, Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India.
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Deng Q, Li R, Chen A, Zhong Y, Yin X, Zhang Y, Yang R. Green synthesis of rectangular hollow tubular carbon nitride via in-situ self-assembly strategy to enhance the degradation of tetracycline hydrochloride under visible light irradiation. ENVIRONMENTAL RESEARCH 2023; 238:117252. [PMID: 37783322 DOI: 10.1016/j.envres.2023.117252] [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: 07/21/2023] [Revised: 09/07/2023] [Accepted: 09/19/2023] [Indexed: 10/04/2023]
Abstract
It has been an urgent requirement for materials with remarkable performance in the photocatalytic degradation of organic contaminants by photocatalytic technology. Limited surface area and speedy recombination rate of photogenerated charge carriers seriously restrain the application of g-C3N4. Morphology control is a powerful approach to enhance the photocatalytic efficiency of g-C3N4. Herein, we reported a method to attain graphitic carbon nitride with rectangular hollow tubular morphology and asperous surface (TUM-CN-2) which is prepared from urea-melamine hydrothermal products and trithiocyanuric acid by self-assembling without using organic solvents or template agents. The specific surface area, photocatalytic activity, and photo-generated carriers migration and separation rate of the obtained photocatalyst TUM-CN-2 are vastly improved. Contrasted with pure g-C3N4, the degradation rate of tetracycline hydrochloride (TCH) and Rhodamine B (RhB) was enhanced about 3.04 and 13.96 times in visible light irradiation, respectively. Moreover, the interference parameters, active free radicals, potential degradation mechanism, and degradation paths of TCH were researched systematically. This work provides a green way to acquire the modified g-C3N4 with splendid catalytic activity through the self-assembly method.
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Affiliation(s)
- Qunfen Deng
- School of Chemistry and Chemical Engineering, Southwest University, No.2 Tiansheng Road, Chongqing 400715, People's Republic of China
| | - Renjie Li
- School of Chemistry and Chemical Engineering, Southwest University, No.2 Tiansheng Road, Chongqing 400715, People's Republic of China
| | - Anli Chen
- School of Chemistry and Chemical Engineering, Southwest University, No.2 Tiansheng Road, Chongqing 400715, People's Republic of China
| | - Yujia Zhong
- School of Chemistry and Chemical Engineering, Southwest University, No.2 Tiansheng Road, Chongqing 400715, People's Republic of China
| | - Xinghang Yin
- School of Chemistry and Chemical Engineering, Southwest University, No.2 Tiansheng Road, Chongqing 400715, People's Republic of China
| | - Yu Zhang
- School of Chemistry and Chemical Engineering, Southwest University, No.2 Tiansheng Road, Chongqing 400715, People's Republic of China
| | - Rui Yang
- School of Chemistry and Chemical Engineering, Southwest University, No.2 Tiansheng Road, Chongqing 400715, People's Republic of China.
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Zhang Z, Ren L, Li H, Jiang D, Fang Y, Du H, Xu G, Zhu C, Li H, Lu Z, Yuan Y. π-Conjugated In-Plane Heterostructure Enables Long-Lived Shallow Trapping in Graphitic Carbon Nitride for Increased Photocatalytic Hydrogen Generation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2207173. [PMID: 36740721 DOI: 10.1002/smll.202207173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 01/07/2023] [Indexed: 05/04/2023]
Abstract
The relatively short-lived excited states, such as the nascent electron-hole pairs (excitons) and the shallow trapping states, in semiconductor-based photocatalysts produce an exceptionally high charge carrier recombination rate, dominating a low solar-to-fuel performance. Here, a π-conjugated in-plane heterostructure between graphitic carbon nitride (g-CN) and carbon rings (Crings ) (labeling g-CN/Crings ) is effectively synthesized from the thermolysis of melamine-citric acid aggregates via a microwave-assisted heating process. The g-CN/Crings in-plane heterostructure shows remarkably suppressed excited-state decay and increased charge carrier population in photocatalysis. Kinetics analysis from the femtosecond time-resolved transient absorption spectroscopy illustrates that the g-CN/Crings π-conjugated heterostructure produces slower exciton annihilation (τ1 = 7.9 ps) and longer shallow electron trapping (τ2 = 407.1 ps) than pristine g-CN (τ1 = 3.6 ps, τ2 = 264.1 ps) owing to Crings incorporation, both of which enable more photoinduced electrons to participate in the photocatalytic reactions, thereby realizing photoactivity enhancement. As a result, the photocatalytic activity exhibits an eightfold enhancement in visible-light-driven H2 generation. This work provides a viable route of constructing π-conjugated in-plane heterostructures to suppress the excited-state decay and improve the photocatalytic performance.
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Affiliation(s)
- Ziye Zhang
- School of Materials Science and Engineering and the Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University), Ministry of Education, Anhui University, Hefei, 230601, P. R. China
| | - Liteng Ren
- School of Materials Science and Engineering and the Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University), Ministry of Education, Anhui University, Hefei, 230601, P. R. China
| | - Hao Li
- Anhui Province Key Laboratory of Optoelectronic Materials Science and Technology, School of Physics and Electronic Information, and the Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Normal University, Wuhu, 241002, P. R. China
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, 236037, P. R. China
| | - Daochuan Jiang
- School of Materials Science and Engineering and the Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University), Ministry of Education, Anhui University, Hefei, 230601, P. R. China
| | - Yuetong Fang
- Anhui Province Key Laboratory of Optoelectronic Materials Science and Technology, School of Physics and Electronic Information, and the Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Normal University, Wuhu, 241002, P. R. China
| | - Haiwei Du
- School of Materials Science and Engineering and the Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University), Ministry of Education, Anhui University, Hefei, 230601, P. R. China
| | - Gengsheng Xu
- School of Materials Science and Engineering and the Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University), Ministry of Education, Anhui University, Hefei, 230601, P. R. China
| | - Chuhong Zhu
- School of Materials Science and Engineering and the Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University), Ministry of Education, Anhui University, Hefei, 230601, P. R. China
| | - Huiquan Li
- Anhui Province Key Laboratory of Optoelectronic Materials Science and Technology, School of Physics and Electronic Information, and the Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Normal University, Wuhu, 241002, P. R. China
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, 236037, P. R. China
| | - Zhou Lu
- Anhui Province Key Laboratory of Optoelectronic Materials Science and Technology, School of Physics and Electronic Information, and the Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Normal University, Wuhu, 241002, P. R. China
| | - Yupeng Yuan
- School of Materials Science and Engineering and the Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University), Ministry of Education, Anhui University, Hefei, 230601, P. R. China
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Zhang X, Song Z, Yu X, Dong X, Peng Y, Wei K, Cao L, He X, Zhang Z, Fan J. Construction of heterogeneous structures of MIL-101(Fe)/Ce/g-C3N4 nanocomposites for enhanced photocatalytic activity under visible light. J SOLID STATE CHEM 2023. [DOI: 10.1016/j.jssc.2023.124013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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Perumal K, Shanavas S, Ahamad T, Karthigeyan A, Murugakoothan P. Construction of Ag 2CO 3/BiOBr/CdS ternary composite photocatalyst with improved visible-light photocatalytic activity on tetracycline molecule degradation. J Environ Sci (China) 2023; 125:47-60. [PMID: 36375929 DOI: 10.1016/j.jes.2021.10.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 10/13/2021] [Accepted: 10/19/2021] [Indexed: 06/16/2023]
Abstract
Photocatalytic degradation was considered as a best strategy for the removal of antibiotic drug pollutants from wastewater. The photocatalyst of ABC (Ag2CO3/BiOBr/CdS) composite synthesized by hydrothermal and precipitation method. The ABC composite used to investigate the degradation activity of tetracycline (TC) under visible light irradiation. The physicochemical characterization methods (e.g. scanning electron microscopy (SEM), transmission electron microscopy (TEM), high resolution-transmission electron microscopy (HR-TEM), ultraviolet visible spectroscopy (UV), photoluminescence (PL) and time resolved photoluminescence (TRPL) clearly indicate that the composite has been construct successfully that enhances the widened visible light absorption, induces charge transfer and separation efficiency of electron - hole pairs. The photocatalytic activity of all samples was examined through photodegradation of tetracycline in aqueous medium. The photocatalytic degradation rate of ABC catalyst could eliminate 98.79% of TC in 70 min, which is about 1.5 times that of Ag2CO3, 1.28 times that of BiOBr and 1.1 times that of BC catalyst, respectively. The role of operation parameters like, TC concentration, catalyst dosage and initial pH on TC degradation activity were studied. Quenching experiment was demonstrated that ·OH and O2·- were played a key role during the photocatalysis process that was evidently proved in electron paramagnetic resonance (EPR) experiment. In addition, the catalyst showed good activity perceived in reusability and stability test due to the synergistic effect between its components. The mechanism of degradation of TC in ABC composite was proposed based on the detailed analysis. The current study will give an efficient and recyclable photocatalyst for antibiotic aqueous pollutant removal.
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Affiliation(s)
- Kaliyappan Perumal
- Material Research and Development Laboratory, Postgraduate and Research Department of Physics, Pachaiyappa's College, Chennai 600030, India
| | - Shajahan Shanavas
- Nano and Hybrid Materials Laboratory, Department of Physics, Periyar University, Salem 636001, India
| | - Tansir Ahamad
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Annamalai Karthigeyan
- Department of Physics and Nanotechnology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Kanchipuram 603203, India
| | - Padmanabhan Murugakoothan
- Material Research and Development Laboratory, Postgraduate and Research Department of Physics, Pachaiyappa's College, Chennai 600030, India.
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7
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Wang L, Li R, Zhang Y, Gao Y, Xiao X, Zhang Z, Chen T, Zhao Y. Tetracycline degradation mechanism of peroxymonosulfate activated by oxygen-doped carbon nitride. RSC Adv 2023; 13:6368-6377. [PMID: 36845579 PMCID: PMC9943927 DOI: 10.1039/d3ra00345k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 02/14/2023] [Indexed: 02/24/2023] Open
Abstract
In this study, oxygen-doped carbon nitride (O-C3N4) was prepared by thermal polymerization and was applied to activate peroxymonosulfate (PMS) for tetracycline (TC) degradation. Experiments were performed to comprehensively evaluate the degradation performance and mechanism. The oxygen atom replaced the nitrogen atom of the triazine structure, which improves the specific surface area of the catalyst, enriches the pore structure and achieves higher electron transport capacity. The characterization results showed that 0.4 O-C3N4 had the best physicochemical properties, and the degradation experiments showed that the 0.4 O-C3N4/PMS system had a higher TC removal rate in 120 min (89.94%) than the unmodified graphitic-phase C3N4/PMS system (52.04%). Cycling experiments showed that O-C3N4 has good reusability and structural stability. Free radical quenching experiments showed that the O-C3N4/PMS system had free radical and non-radical pathways for TC degradation and that the main active species was singlet oxygen (1O2). Intermediate product analysis showed that TC was mineralized to H2O and CO2 mainly by the ring opening, deamination, and demethylation reactions. The results of this study show that the 0.4 O-C3N4/PMS system is simple to prepare and is efficient at removing TC from contaminated water.
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Affiliation(s)
- Liquan Wang
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment Nanjing 210042 China +86 13951930765.,School of Environmental Science and Engineering, Changzhou University Changzhou 213164 China +86 15961238081
| | - Ruyi Li
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment Nanjing 210042 China +86 13951930765
| | - Yimin Zhang
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment Nanjing 210042 China +86 13951930765.,School of Environmental Science and Engineering, Changzhou University Changzhou 213164 China +86 15961238081
| | - Yuexiang Gao
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment Nanjing 210042 China +86 13951930765
| | - Xian Xiao
- School of Environmental Science and Engineering, Changzhou University Changzhou 213164 China +86 15961238081
| | - Zhiwei Zhang
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment Nanjing 210042 China +86 13951930765
| | - Ting Chen
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment Nanjing 210042 China +86 13951930765
| | - Yuan Zhao
- School of Environmental Science and Engineering, Changzhou University Changzhou 213164 China +86 15961238081
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Pattanayak DS, Pal D, Mishra J, Thakur C, Wasewar KL. Doped graphitic carbon nitride (g-C 3N 4) catalysts for efficient photodegradation of tetracycline antibiotics in aquatic environments. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:24919-24926. [PMID: 35306654 DOI: 10.1007/s11356-022-19766-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 03/13/2022] [Indexed: 06/14/2023]
Abstract
Tetracyclines (TCs) antibiotics are very common and often used in both human and veterinary medicines. More than 75% of TCs are excreted in an active condition and released into the environment, posing a risk to the ecosystem and human health. Residual antibiotics are in global water bodies, causing antibiotic resistance and genotoxicity in humans and aquatic organisms. The ever-increasing number of multi-resistant bacteria caused by the widespread use of antibiotics in the environment has sparked a renewed interest in developing more sustainable antibiotic degradation processes. In this regard, photodegradation technique provides a promising solution to resolve this growing issue, paving the way for complete antibiotic degradation with the generation of non-toxic by-products. As a fascinating activity towards visible light range shown by semiconductor, graphitic carbon nitride (g-C3N4) has a medium bandgap, non-toxicity, chemically stable complex, and thermally great strength. Recent studies have concentrated on the performance of g-C3N4 as a photocatalyst for treating wastewater. Pure g-C3N4 exhibits limited photocatalytic activity due to insufficient sunlight usage, small surface area, and a high rate of recombination of electron and hole ([Formula: see text] & [Formula: see text]) pairs created in photocatalytic activity. Doping of g-C3N4 is a very effective method for improving the activity as element doped g-C3N4 shows excellent bandgap and electronic structure. Doping significantly broadens the light-responsive range and reduces recombination of e- & h+ pairs. Under above context, this review provides a systematic and comprehensive outlook of designing doped g-C3N4 as well as efficiency for TCs degradation in aquatic environment.
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Affiliation(s)
- Dhruti Sundar Pattanayak
- Department of Chemical Engineering, National Institute of Technology Raipur, Raipur, 492 010, CG, India
| | - Dharm Pal
- Department of Chemical Engineering, National Institute of Technology Raipur, Raipur, 492 010, CG, India.
| | - Jyoti Mishra
- Department of Chemistry (Environmental Science and Technology Program), ITER, Siksha'O'Anusandhan (Deemed To Be) University, Bhubaneswar, 751 030, Odisha, India
| | - Chandrakant Thakur
- Department of Chemical Engineering, National Institute of Technology Raipur, Raipur, 492 010, CG, India
| | - Kailas L Wasewar
- Department of Chemical Engineering, VNIT, Nagpur, 440010, MH, India
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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: 28] [Impact Index Per Article: 28.0] [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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Cui Y, Zheng J, Zhu Z, Hu C, Liu B. Preparation and application of Bi4O7/Cu-BiOCl heterojunction photocatalyst for photocatalytic degradation of tetracycline under visible light. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Ma Y, Li J, Cai J, Zhong L, Lang Y, Ma Q. Z-scheme g-C3N4/ZnS heterojunction photocatalyst: One-pot synthesis, interfacial structure regulation, and improved photocatalysis activity for bisphenol A. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Guan P, Yang B, Liu J, Yin H, Jiang J, Sui L, Yang S. Synthesis of Novel Rare-earth Cerium Doped C3N4 Nanocomposites for Boosting Photocatalytic H2 Evolution. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.140222] [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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13
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Vadivel S, Fujii M, Rajendran S. Facile synthesis of broom stick like FeOCl/g-C 3N 5 nanocomposite as novel Z-scheme photocatalysts for rapid degradation of pollutants. CHEMOSPHERE 2022; 307:135716. [PMID: 35853514 DOI: 10.1016/j.chemosphere.2022.135716] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 06/27/2022] [Accepted: 07/11/2022] [Indexed: 06/15/2023]
Abstract
A simple and cost-effective route has been utilized for the preparation of a novel lamellar structured FeOCl/g-C3N5 nanocomposite as Z-scheme photocatalyst. The preparation method was performed under the ambient temperature conditions without any hazardous chemicals. Various characterization techniques, namely XRD, FESEM, TEM, FT-IR, UV-Vis, DRS, and PL were carried out to analyse the nanocomposite for confirmation of FeOCl/g-C3N5 nanocomposite. To evaluate its and visible light degradation performances tetracycline (T-C) was used as target pollutant. Among the optimum loading for the g-C3N5 incorporated FeOCl binary nanocomposites, the g-C3N5/FeOCl exhibited a superlative degradation performance toward the T-C antibiotic pollutant. The results confirmed that 95% of T-C was degraded within 40 min under photodegradation mechanism. The improved photodegradation performance in degradation of T-C was mainly due to the reduction in electron-hole recombination, broadening in the light absorption by g-C3N5 incorporation, which leads to shortening the degradation time. Furthermore, the hydroxyl and superoxide radicals played a major role in the photodegradation process and the possible mechanism was elucidated and proposed. The present work implies a novel, sustainable, and efficient Z-scheme system that may deliver a convenient method for environment remediation.
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Affiliation(s)
- Sethumathavan Vadivel
- Department of Civil and Environmental Engineering, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8552, Japan.
| | - Manabu Fujii
- Department of Civil and Environmental Engineering, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8552, Japan.
| | - Saravanan Rajendran
- Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Tarapacá, Avda. General Velásquez, 1775, Arica, Chile
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Bukhari SNUS, Shah AA, Bhatti MA, Tahira A, Channa IA, Shah AK, Chandio AD, Mahdi WA, Alshehri S, Ibhupoto ZH, Liu W. Psyllium-Husk-Assisted Synthesis of ZnO Microstructures with Improved Photocatalytic Properties for the Degradation of Methylene Blue (MB). NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12203568. [PMID: 36296761 PMCID: PMC9609820 DOI: 10.3390/nano12203568] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 10/06/2022] [Accepted: 10/08/2022] [Indexed: 05/02/2023]
Abstract
Wastewater from the textile industry is chronic and hazardous for the human body due to the presence of a variety of organic dyes; therefore, its complete treatment requires efficient, simple, and low cost technology. For this purpose, we grew ZnO microstructures in the presence of psyllium husk, and the role of psyllium husk was to modify the surface of the ZnO microstructures, create defects in the semiconducting crystal structures, and to alter the morphology of the nanostructured material. The growth process involved a hydrothermal method followed by calcination in air. Additionally, the psyllium husk, after thermal combustion, added a certain value of carbon into the ZnO nanomaterial, consequently enhancing the photocatalytic activity towards the degradation of methylene blue. We also investigated the effect of varying doses of photocatalyst on the photocatalytic properties towards the photodegradation of methylene blue in aqueous solution under the illumination of ultraviolet light. The structure and morphology of the prepared ZnO microstructures were explored by scanning electron microscopy (SEM) and powder X-ray diffraction (XRD) techniques. The degradation of methylene blue was monitored under the irradiation of ultraviolet light and in the dark. Also, the degradation of methylene blue was measured with and without photocatalyst. The photodegradation of methylene blue is highly increased using the ZnO sample prepared with psyllium husk. The photodegradation efficiency is found to be approximately 99.35% for this sample. The outperforming functionality of psyllium-husk-assisted ZnO sample is attributed to large surface area of carbon material from the psyllium husk and the synergetic effect between the incorporated carbon and ZnO itself. Based on the performance of the hybrid material, it is safe to say that psyllium husk has high potential for use where surface roughness, morphology alteration, and defects in the crystal structure are vital for the enhancing the functionality of a nanostructured material. The observed performance of ZnO in the presence of psyllium husk provides evidence for the fabrication of a low cost and efficient photocatalyst for the wastewater treatment problems.
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Affiliation(s)
- Syed Nizam Uddin Shah Bukhari
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, School of Material Science, Beijing University of Chemical Technology, Beijing 100029, China
- Department of Basic Science and Humanities, Dawood University of Engineering and Technology, Karachi 74800, Pakistan
| | - Aqeel Ahmed Shah
- Wet Chemistry and Thin Film Laboratory, Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi 75270, Pakistan
| | - Muhammad Ali Bhatti
- Department of Environmental Sciences, University of Sindh Jamshoro, Jamshoro 76080, Pakistan
| | - Aneela Tahira
- Dr. M.A Kazi Institute of Chemistry University of Sindh, Jamshoro 76090, Pakistan
| | - Iftikhar Ahmed Channa
- Wet Chemistry and Thin Film Laboratory, Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi 75270, Pakistan
| | - Abdul Karim Shah
- Department of Chemical Engineering, Dawood University of Engineering and Technology, Karachi 74800, Pakistan
| | - Ali Dad Chandio
- Wet Chemistry and Thin Film Laboratory, Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi 75270, Pakistan
| | - Wael A. Mahdi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Sultan Alshehri
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Zaffar Hussain Ibhupoto
- Dr. M.A Kazi Institute of Chemistry University of Sindh, Jamshoro 76090, Pakistan
- Correspondence: (Z.H.I.); (W.L.)
| | - Wen Liu
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
- Correspondence: (Z.H.I.); (W.L.)
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15
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Phenyl-doped porous carbon nitride for enhanced visible light-driven photocatalytic oxidation of aromatic alcohols. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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16
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Alnaggar G, Hezam A, Bajiri MA, Drmosh QA, Ananda S. Sulfate radicals induced from peroxymonosulfate on electrochemically synthesized TiO 2-MoO 3 heterostructure with Ti-O-Mo bond charge transfer pathway for potential organic pollutant removal under solar light irradiation. CHEMOSPHERE 2022; 303:134562. [PMID: 35413371 DOI: 10.1016/j.chemosphere.2022.134562] [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: 12/02/2021] [Revised: 03/25/2022] [Accepted: 04/06/2022] [Indexed: 06/14/2023]
Abstract
Here, a novel method for synthesis of heterostructured TiO2-MoO3 (MT) nanosheets photocatalyst by utilizing a facile electrochemical method and examined it's photocatalytic activity by the degradation of tetracycline hydrochloride (TCH), a model of organic pollutants, in the presence of peroxymonosulfate (PMS) under solar light irradiation (SL) was reported for the first time. The influence of several factors on the degradation efficiency including the initial concentration of TCH, solution pH, catalyst dosage, PMS concentration, and the existence of inorganic anions was explored. The MT-15/PMS system displayed a promising photocatalytic performance and up to 97% of TCH was degraded in 90 min the rate of the degradation reaction of MT-15/PMS was the highest (0.05299 min-1) compared to 0.00251, 0.00337, 0.00546, 0.00735, 0.01337min-1of TiO2-P25, TiO2-P25/PMS, MoO3, MoO3/PMS, and MT-15 respectively. The enhancement can be attributed to several reasons. First, the 2D morphology of the optimized heterostructure photocatalyst plays a significant role in providing much more active sites on its surface. Next, the boosted light absorption efficiency and higher photoproduced electron-hole pair separation ability, induced by the unique direct transformation of photogenerated electrons from the valance band of TiO2 to the conduction band of MoO3 via the Ti-O-Mo bond formed at the interface of MT heterostructure. Finally, the appropriate accessible reactive sites for the activation of PMS together with the synergistic effect between activation of PMS and photocatalytic processes eased the production of active species for the degradation of pollutants. Based on the scavenger experiments and EPR analysis, hydroxide and sulfate radicals were found to be the dominant free radical active species in the degradation process. Furthermore, the synergistic degradation reaction mechanism was proposed.
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Affiliation(s)
- Gubran Alnaggar
- Department of Studies in Chemistry, University of Mysore, Manasagangothiri, Mysuru, 570006, India
| | - Abdo Hezam
- Department of Physics, Faculty of Science, Ibb University, Ibb, Yemen; Leibniz-Institute for Catalysis at the University of Rostock, 18059, Rostock, Germany
| | - Mohammed Abdullah Bajiri
- Department of Studies and Research in Industrial Chemistry, School of Chemical Sciences, Kuvempu University, Shankaraghatta, 577 451, India
| | - Q A Drmosh
- Interdisciplinary Research Center for Hydrogen and Energy Storage (IRC-HES), King Fahd University of Petroleum & Minerals (KFUPM), Dhahran, 31261, Saudi Arabia
| | - Sannaiah Ananda
- Department of Studies in Chemistry, University of Mysore, Manasagangothiri, Mysuru, 570006, India.
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Jiang Y, Xing C, Chen Y, Shi J, Wang S. Preparation of BiFeO 3 and photodegradation of tetracycline pollutant in the UV-heterogeneous Fenton-like system. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:57656-57668. [PMID: 35353309 DOI: 10.1007/s11356-022-19806-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 03/15/2022] [Indexed: 06/14/2023]
Abstract
Surplus tetracycline in the water body causes damage to the ecology balance and human health. Therefore, this work established an efficient strategy, namely, the BFO-based UV-heterogeneous Fenton-like system, to eliminate TC pollution. The photocatalytic oxidation system has been integrated with the heterogeneous Fenton-like system, cooperated with the photolysis of H2O2. These synergistic effects could boost the generation of reactive species for the TC degradation and mineralization, due to the reduction of Fe(III) to Fe(II) by photogenerated electrons and the separation of photogenerated electron-hole pairs. The prepared BFO was stable with no secondary pollution, and could be recovered by an extra magnet to reuse. Compared with other single oxidation systems, this coupled system showed an outstanding performance in TC disposal, and TC and TOC removal efficiencies could reach 100% and 74.92%, respectively. Moreover, the mechanisms for TC degradation involved that TC was degraded by oxidation species, such as superoxide radicals, hydroxyl radicals, and positive holes, and intermediate products in the TC degradation process mainly were products at m/z = 459, m/z = 445, and m/z = 134. The promising TC disposal efficiency achieved by the integration between BFO-based photocatalytic and heterogeneous Fenton-like system sheds light on applying BFO to control water pollution.
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Affiliation(s)
- Yongwei Jiang
- Jiangsu Provincial Academy of Environmental Science Co., Ltd, Nanjing, 210036, People's Republic of China
| | - Chao Xing
- School of Engineering, China Pharmaceutical University, No.639, Longmian Road, Nanjing, 211198, People's Republic of China
| | - Yue Chen
- School of Engineering, China Pharmaceutical University, No.639, Longmian Road, Nanjing, 211198, People's Republic of China
| | - Jing Shi
- School of Engineering, China Pharmaceutical University, No.639, Longmian Road, Nanjing, 211198, People's Republic of China.
| | - Sheng Wang
- School of Engineering, China Pharmaceutical University, No.639, Longmian Road, Nanjing, 211198, People's Republic of China
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A review on synthesis, modification method, and challenges of light-driven H2 evolution using g-C3N4-based photocatalyst. Adv Colloid Interface Sci 2022; 307:102722. [DOI: 10.1016/j.cis.2022.102722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 06/05/2022] [Accepted: 06/17/2022] [Indexed: 11/19/2022]
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19
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Co-Doped, Tri-Doped, and Rare-Earth-Doped g-C3N4 for Photocatalytic Applications: State-of-the-Art. Catalysts 2022. [DOI: 10.3390/catal12060586] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/10/2022] Open
Abstract
Rapid industrialization and overpopulation have led to energy shortages and environmental pollution, accelerating research to solve the issues. Currently, metal-free photocatalysts have gained the intensive attention of scientists due to their environmental-friendly nature and ease of preparation. It was noticed that g-C3N4 (GCN) consists of a few outstanding properties that could be used for various applications such as water treatment and clean energy production. Nonetheless, bare GCN contains several drawbacks such as high charge recombination, limited surface area, and low light sensitivity. Several solutions have been applied to overcome GCN limitations. Co-doping, tri-doping, and rare-earth-doping can be effective solutions to modify the GCN structure and improve its performance toward photocatalysis. This review highlights the function of multi-elemental and rare-earth dopants in GCN structure, mechanisms, and performance for photocatalytic applications as well as the advantages of co-doping, tri-doping, and rare-earth-doping of GCN. This review summarizes the different roles of dopants in addressing the limitations of GCN. Therefore, this article critically reviewed how multi-elemental and rare-earth-doping affect GCN properties and enhanced photoactivity for various applications.
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20
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One-pot hydrothermal synthesis of a double Z-scheme g-C 3N 4/AgI/β-AgVO 3 ternary nanocomposite for efficient degradation of organic pollutants and DPC-Cr(VI) complex under visible-light irradiation. Photochem Photobiol Sci 2022; 21:1371-1386. [PMID: 35507304 DOI: 10.1007/s43630-022-00226-y] [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: 12/30/2021] [Accepted: 04/06/2022] [Indexed: 10/18/2022]
Abstract
The Z-scheme photocatalytic system provides a promising way to achieve significant photodegradation efficiency. The work embodied here describes the synthesis of highly efficient double Z-scheme g-C3N4/AgI/β-AgVO3 (g-CNAB) ternary nanocomposite using a one-pot hydrothermal route. The optical properties, phase structure, and morphology of the synthesized samples were investigated using UV-visible diffuse-reflectance spectroscopy (UV-Vis DRS), X-ray diffraction, and scanning electron microscopy, respectively. The transmission electron microscopy investigation revealed that synthesized composite material represents close interfacial interactions. X-ray photoelectron spectroscopy analysis confirms the presence of all the elements in the synthesized ternary nanocomposite materials. The photocatalytic performance of as-prepared photocatalysts has been systematically investigated using the photodegradation of a variety of pollutants, including Rhodamine B, Ciprofloxacin, and 1,5-diphenylcarbazide-Cr(VI) [DPC-Cr(VI)] complex under visible-light irradiation. Among all synthesized materials, such as g-C3N4, AgI, β-AgVO3, and ternary nanocomposites with varying loading of β-AgVO3 [g-CNAB(0.5, 1.0, 1.5, 2.0)], the photocatalyst g-CNAB(1.5) nanocomposite achieved a remarkably high photocatalytic efficiency. The quenching impact of several scavengers revealed that reactive species such as superoxide anion radical (O2·-) and hydroxyl radical (·OH) are significant in the degradation of various contaminants. Based on the characterization and application, a plausible photocatalytic mechanism has been sketched out to determine the reaction pathways involved in the degradation of pollutants present in the aqueous medium.
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21
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Chen J, Gu P, Guan Y, Su H. Synthesis of g-C3N4 composite co-doped with CeO2 and sugar cane bagasse charcoal for the degradation of methylene blue under visible light. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128551] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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22
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Xu F, An N, Lai C, Zhang M, Li B, Liu S, Li L, Qin L, Fu Y, Yi H, Yan H. Nitrogen-doping coupled with cerium oxide loading co-modified graphitic carbon nitride for highly enhanced photocatalytic degradation of tetracycline under visible light. CHEMOSPHERE 2022; 293:133648. [PMID: 35063563 DOI: 10.1016/j.chemosphere.2022.133648] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 12/11/2021] [Accepted: 01/14/2022] [Indexed: 06/14/2023]
Abstract
The increasingly serious pollution of antibiotics brings an enormous threat to the ecological environment and human health. Graphite phase carbon nitride (g-C3N4), as a popular photocatalytic material, is widely used in photocatalytic degradation of antibiotics in water. In order to make up for the shortage of g-C3N4 monomer, CeO2/N-doped g-C3N4 (CeNCN) composite photocatalysts co-modified with nitrogen doping and CeO2 loading were designed and synthesized with the idea of expanding visible light absorption and promoting photogenerated carrier separation. CeNCN exhibits excellent photodegradation performance, the removal rate of tetracycline reached 80.09% within 60 min, which is much higher than that of g-C3N4 (CN) and N-doped g-C3N4 (NCN); and the quasi-first-order degradation rate constant is 0.0291, which is 7.86 and 2.29 times higher than CN and NCN. Electron spin resonance and free radical trapping experiments confirmed that h+, O2- and OH are the active substances in the photocatalytic system. After 5 cycles, the degradation efficiency of tetracycline still exceeds 75%, which indicates that CeNCN has good stability. This work proves that N-doping and CeO2 loading can effectively broaden the photoresponse range of g-C3N4, facilitate the separation of photogenerated electron-hole pairs, and provide a reference for the construction of g-C3N4-based photocatalyst with high-efficiency photodegradation activity.
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Affiliation(s)
- Fuhang Xu
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, Hunan, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, PR China
| | - Ning An
- Iron & Steel Research Institute of Ansteel Group, Anshan, 114009, Liaoning, PR China
| | - Cui Lai
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, Hunan, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, PR China.
| | - Mingming Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, Hunan, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, PR China
| | - Bisheng Li
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, Hunan, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, PR China
| | - Shiyu Liu
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, Hunan, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, PR China
| | - Ling Li
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, Hunan, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, PR China
| | - Lei Qin
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, Hunan, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, PR China
| | - Yukui Fu
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, Hunan, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, PR China
| | - Huan Yi
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, Hunan, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, PR China
| | - Huchuan Yan
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, Hunan, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, PR China
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23
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Gu Q, Jiang P, Zhang K, Shen Y, Leng Y, Zhang P, Wai PT, Yu J, Cao Z. High specific surface CeO 2-NPs doped loose porous C 3N 4for enhanced photocatalytic oxidation ability. NANOTECHNOLOGY 2022; 33:235603. [PMID: 35026750 DOI: 10.1088/1361-6528/ac4b30] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 01/13/2022] [Indexed: 06/14/2023]
Abstract
Porous C3N4(PCN) is favored by researchers because it has more surface active sites, higher specific surface area and stronger light absorption ability than traditional g-C3N4. In this study, cerium dioxide nanoparticles (CeO2-NPs) with mixed valence state of Ce3+and Ce4+were doped into the PCN framework by a two-step method. The results indicate that CeO2-NPs are highly dispersed in the PCN framework, which leads to a narrower band gap, a wider range of the light response and an improved the separation efficiency of photogenerated charge in PCN. Moreover, the specific surface area (145.69 m2g-1) of CeO2-NPs doped PCN is a 25.5% enhancement than that of PCN (116.13 m2g-1). In the experiment of photocatalytic selective oxidation of benzyl alcohol, CeO2-NPs doped porous C3N4exhibits excellent photocatalytic activity, especially Ce-PCN-30. The conversion rate of benzyl alcohol reaches 74.9% using Ce-PCN-30 as photocatalyst by 8 h of illumination, which is 25.7% higher than that of pure porous C3N4. Additionally, CeO2-NPs doped porous C3N4also exhibits better photocatalytic efficiency for other aromatic alcohols.
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Affiliation(s)
- Qian Gu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
| | - PingPing Jiang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Kai Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Yirui Shen
- College of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo 315211, People's Republic of China
| | - Yan Leng
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Pingbo Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Phyu Thin Wai
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Jie Yu
- Hairma (Nantong) Technology Co., Ltd, Nantong, 226000, People's Republic of China
| | - Zhigao Cao
- Hairma (Nantong) Technology Co., Ltd, Nantong, 226000, People's Republic of China
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Mafa PJ, Malefane ME, Idris AO, Liu D, Gui J, Mamba BB, Kuvarega AT. Multi-elemental doped g-C3N4 with enhanced visible light photocatalytic Activity: Insight into naproxen Degradation, Kinetics, effect of Electrolytes, and mechanism. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120089] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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25
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Hasan J, Wang J, Wang Z, Idrees M, Batool S, Zhang C, Qin C. Enhanced ultraviolet-visible photocatalysis of RGO/equaixial geometry TiO 2 composites on degradation of organic dyes in water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:12222-12236. [PMID: 34562218 DOI: 10.1007/s11356-021-16605-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 09/14/2021] [Indexed: 06/13/2023]
Abstract
The reduced graphene oxide dopped equaixial geometry TiO2 (rGO/egTiO2) composite as photocatalyst was synthesized hydrothermally with various mass ratios of tetrabutyl titanate. The photocatalyst is considered to be rGO/equaixial geometry TiO2 in terms of modifying the combined reduced graphene Oxide and TiO2. The rGO plays a vital role in rGO/egTiO2 composite as photocatalysts were analyzed in methylene blue (MB) and rhodamine B (RhB) photocatalytic degradation under UV and simulated solar light irradiation. This synthesized catalyst was characterized by various analytical techniques such as XPS, XRD, SEM, BET, and TEM. The rGO/egTiO2 composite exhibits enhanced photocatalytic performance with degradation rates of 97.5 and 97% on RhB and MB for 60 min under UV radiation respectively, while the degradation rate of 94 and 92 % was observed on the same dyes for 6 h under the simulated sunlight radiation. The enhanced photocatalytic performance of the rGO/egTiO2 composite under ultraviolet irradiation source was owing to a high separation efficiency of the photo-induced electron-hole pairs, while the photocatalytic performance under simulated sunlight radiation was due to the photosensitive and charge separator behavior of rGO. This offers us an excellent potential of significant photocatalytic activity for the removal of organic contaminants from wastewater.
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Affiliation(s)
- Jaafar Hasan
- Shaanxi Key Laboratory of Polymer Science and Technology, Ministry of Education Key Laboratory of Supernormal Material Physics and Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710129, People's Republic of China
- College of Dentistry, AL-Muthanna University, AL-Muthanna Province, Samawah, Iraq
| | - Jing Wang
- Shaanxi Key Laboratory of Polymer Science and Technology, Ministry of Education Key Laboratory of Supernormal Material Physics and Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710129, People's Republic of China
| | - Zhentao Wang
- Shaanxi Key Laboratory of Polymer Science and Technology, Ministry of Education Key Laboratory of Supernormal Material Physics and Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710129, People's Republic of China
| | - Muhammad Idrees
- Additive Manufacturing Institute, College of Mechatronics and Control Engineering, Institute of Microscale Optoelectronics and Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, People's Republic of China
| | - Saima Batool
- Additive Manufacturing Institute, College of Mechatronics and Control Engineering, Institute of Microscale Optoelectronics and Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, People's Republic of China
| | - Caiwei Zhang
- Shaanxi Key Laboratory of Polymer Science and Technology, Ministry of Education Key Laboratory of Supernormal Material Physics and Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710129, People's Republic of China
| | - Chuanguang Qin
- Shaanxi Key Laboratory of Polymer Science and Technology, Ministry of Education Key Laboratory of Supernormal Material Physics and Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710129, People's Republic of China.
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26
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Ding H, Liu Z, Zhang Q, He X, Feng Q, Wang D, Ma D. Biomass porous carbon as the active site to enhance photodegradation of oxytetracycline on mesoporous g-C3N4. RSC Adv 2022; 12:1840-1849. [PMID: 35425159 PMCID: PMC8979088 DOI: 10.1039/d1ra08615d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 12/30/2021] [Indexed: 11/21/2022] Open
Abstract
A novel mesoporous g-C3N4 loaded with biomass porous carbon was synthesized by molten salt assisted thermal polycondensation, and the formation of hollow tubular structure increased the specific surface area.
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Affiliation(s)
- Hekun Ding
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, Guangxi, China
- Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, Guangxi, China
| | - Zheng Liu
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, Guangxi, China
- Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, Guangxi, China
| | - Qiongyue Zhang
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, Guangxi, China
| | - Xiao He
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, Guangxi, China
| | - Qingge Feng
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, Guangxi, China
- Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, Guangxi, China
| | - Dongbo Wang
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, Guangxi, China
- Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, Guangxi, China
| | - Dachao Ma
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, Guangxi, China
- Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, Guangxi, China
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Modified g-C3N4 derived from ionic liquid and urea for promoting visible-light photodegradation of organic pollutants. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2021.06.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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28
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Fabrication of a La-doped BiVO4@CN step-scheme heterojunction for effective tetracycline degradation with dual-enhanced molecular oxygen activation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119224] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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29
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Design principle in biosensing: Critical analysis based on graphitic carbon nitride (G-C3N4) photoelectrochemical biosensor. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116454] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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30
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Suyana P, Ganguly P, Nair BN, Pillai SC, Hareesh U. Structural and compositional tuning in g-C3N4 based systems for photocatalytic antibiotic degradation. CHEMICAL ENGINEERING JOURNAL ADVANCES 2021. [DOI: 10.1016/j.ceja.2021.100148] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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31
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Liu Z, Guo W, Liu X, Wu G, Tang Y, Mo Z, Yang D. Study on photoelectric properties of Fe-Co codoped g-C3N4. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138951] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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32
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Yan L, Li W, Zhao Q, Zhu Z, Hu C, Liu B. Enhanced photocatalytic conversion of (3D/2D) BiVO4@Polypyrrole/g-C3N4 ternary composites with Z-scheme band alignment for the Antibiotic removal. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126783] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Du C, Zhang Z, Tan S, Yu G, Chen H, Zhou L, Yu L, Su Y, Zhang Y, Deng F, Wang S. Construction of Z-scheme g-C 3N 4 / MnO 2 /GO ternary photocatalyst with enhanced photodegradation ability of tetracycline hydrochloride under visible light radiation. ENVIRONMENTAL RESEARCH 2021; 200:111427. [PMID: 34062202 DOI: 10.1016/j.envres.2021.111427] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/17/2021] [Accepted: 05/24/2021] [Indexed: 05/27/2023]
Abstract
A facile wet-chemical method was adopted to synthesize g-C3N4/MnO2/GO heterojunction photocatalyst for visible-light photodegradation of tetracycline hydrochloride (TC). The addition of MnO2 and GO increased the absorption of visible light and the specific surface area of the photocatalyst. The results of photoluminescence, electrochemical impedance spectroscopy, and photocurrent response indicated that CMG-10 had the lowest electron-hole recombination probability, which was beneficial for the photocatalytic reaction. The ternary photocatalyst exhibited enhanced photoelectric performance and superior photocatalytic activity with 91.4% removal of TC (10 mg/L) under a mere 60 min visible light illumination, which showed enhanced photocatalytic degradation when compared with binary (CM, 77.95%; CG, 78.83%) and single (C3N4, 55.5%; MnO2, 36.41%) photocatalysts. A pH of 6 was optimal for the CMG-10 photocatalytic degradation of TC, and the optimal photocatalyst dosage was 0.5 g/L. Common coexisting ions influenced the removal of TC by influencing the production of active species. The catalyst is stable and reusable with only a 10% reduction in removal efficiency after four cycles. According to the active species analysis, the Z-scheme mechanism was a charge transfer behavior in the composite photocatalyst, which could prevent the recombination of photogenerated carriers. This study presents a photocatalytic approach to the effective removal of TC from water bodies, which provides practical implications to advance the use of photocatalytic technology in the restoration of aqueous environmental pollution.
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Affiliation(s)
- Chunyan Du
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha, 410114, PR China; Engineering and Technical Center of Hunan Provincial Environmental Protection for River-Lake Dredging Pollution Control, Changsha, 410114, PR China
| | - Zhuo Zhang
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China
| | - Shiyang Tan
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China
| | - Guanlong Yu
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha, 410114, PR China; Engineering and Technical Center of Hunan Provincial Environmental Protection for River-Lake Dredging Pollution Control, Changsha, 410114, PR China.
| | - Hong Chen
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha, 410114, PR China; Engineering and Technical Center of Hunan Provincial Environmental Protection for River-Lake Dredging Pollution Control, Changsha, 410114, PR China
| | - Lu Zhou
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha, 410114, PR China; Engineering and Technical Center of Hunan Provincial Environmental Protection for River-Lake Dredging Pollution Control, Changsha, 410114, PR China
| | - Lie Yu
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha, 410114, PR China; Engineering and Technical Center of Hunan Provincial Environmental Protection for River-Lake Dredging Pollution Control, Changsha, 410114, PR China
| | - Yihai Su
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China
| | - Yin Zhang
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China
| | - Fangfang Deng
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China
| | - Shitao Wang
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China
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Zhang W, Xu D, Wang F, Chen M. Element-doped graphitic carbon nitride: confirmation of doped elements and applications. NANOSCALE ADVANCES 2021; 3:4370-4387. [PMID: 36133458 PMCID: PMC9417723 DOI: 10.1039/d1na00264c] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 06/17/2021] [Indexed: 05/11/2023]
Abstract
Doping is widely reported as an efficient strategy to enhance the performance of graphitic carbon nitride (g-CN). In the study of element-doped g-CN, the characterization of doped elements is an indispensable requirement, as well as a huge challenge. In this review, we summarize some useful characterization methods which can confirm the existence and chemical states of doped elements. The advantages and shortcomings of these characterization methods are discussed in detail. Various applications of element-doped g-CN and the function of doped elements are also introduced. Overall, this review article aims to provide helpful information for the research of element-doped g-CN.
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Affiliation(s)
- Wenjun Zhang
- Department of Materials Science, Fudan University Shanghai 200433 PR China
| | - Datong Xu
- Department of Materials Science, Fudan University Shanghai 200433 PR China
| | - Fengjue Wang
- Department of Materials Science, Fudan University Shanghai 200433 PR China
| | - Meng Chen
- Department of Materials Science, Fudan University Shanghai 200433 PR China
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Yin X, Liu L, Ai F. Enhanced Photocatalytic Degradation of Methylene Blue by WO 3 Nanoparticles Under NIR Light Irradiation. Front Chem 2021; 9:683765. [PMID: 34277567 PMCID: PMC8280501 DOI: 10.3389/fchem.2021.683765] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 04/26/2021] [Indexed: 11/13/2022] Open
Abstract
Photocatalysts have been paid great attention owing to their excellent performance in the degradation of dangerous organic pollutants. Herein, a novel longitudinally grown WO3 photocatalyst was prepared by using a hydrothermal process, which had strong ultraviolet, visible light absorption, and weak near-infrared (NIR) absorption. The WO3 photocatalyst exhibited excellent performance in the rapid degradation of methylene blue (MB) in industry. The photothermal effect is mainly responsible for the rapid degradation of MB under NIR laser irradiation. Besides, different morphologies and structures affect the degradation of MB. The longitudinally grown enlarged the contact area between photocatalyst and MB, and expanded the scope of the absorption wavelength of light, enhancing the stability of photocatalytic materials. So this unique transverse longitudinal structure exhibited a potential capability for degrading organic pollutants.
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Affiliation(s)
- Xiuzhao Yin
- College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen, China
| | - Lu Liu
- Department of Civil and Environmental Engineering, Hanyang University, Seoul, South Korea
| | - Fujin Ai
- College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen, China
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36
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Phosphorus-doped Carbon Nitride Nanosheets as Efficient White-LED-Light-Driven Photocatalyst for Hydrogen Evolution and Tetracycline Degradation. Catal Letters 2021. [DOI: 10.1007/s10562-021-03595-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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37
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Pan T, Chen D, Xu W, Fang J, Wu S, Liu Z, Wu K, Fang Z. Anionic polyacrylamide-assisted construction of thin 2D-2D WO 3/g-C 3N 4 Step-scheme heterojunction for enhanced tetracycline degradation under visible light irradiation. JOURNAL OF HAZARDOUS MATERIALS 2020; 393:122366. [PMID: 32120212 DOI: 10.1016/j.jhazmat.2020.122366] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/08/2020] [Accepted: 02/20/2020] [Indexed: 06/10/2023]
Abstract
Thin 2D/2D WO3/g-C3N4 Step-scheme (S-scheme) heterojunction with carbon doping and bridge (C-W/N) was constructed with anionic polyacrylamide (APAM), in which APAM functioned as an assistant templet and a carbon source. APAM and WO3 were inserted into g-C3N4 nanosheet. The carbon, thin planar structure and WO3 with oxygen vacancies result in fast charge transfer, high quantum efficiency and strong driving force for photocatalytic reaction. Consequently, as-prepared C-W/N ternary composite photocatalyst exhibited significantly enhanced photocatalytic performance for tetracycline (TC) degradation under visible light compared to pure g-C3N4, WO3 and other binary composites. Moreover, the material showed high stability and reusability in cyclic TC degradation. The principal intermediate products over C-W/N photocatalyst were revealed by HPLC-MS analysis. Corresponding degradation pathway of TC was also presented in this work. According to the trapping experiments, analysis of electron spin resource (ESR) and band gap, possible charge transfer pathways of C-W/N are proposed and discussed in detail. Based on the results, carbon derived from APAM works not only as electron mediator but also as acceptor for photocatalytic degradation reaction. It is a promising way to further modulate heterojunction for varies applications.
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Affiliation(s)
- Tao Pan
- School of Environment, South China Normal University, Guangzhou, 510006, China
| | - Dongdong Chen
- School of Environment, South China Normal University, Guangzhou, 510006, China
| | - Weicheng Xu
- School of Environmental and Chemical Engineering, Foshan University, Foshan 528000, China
| | - Jianzhang Fang
- School of Environment, South China Normal University, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China; China Guangdong Technology Research Center for Ecological Management and Remediation of Urban Water System, Guangzhou, 510006, China.
| | - Shuxing Wu
- School of Environment, South China Normal University, Guangzhou, 510006, China
| | - Zhang Liu
- School of Environment, South China Normal University, Guangzhou, 510006, China
| | - Kun Wu
- School of Environment, South China Normal University, Guangzhou, 510006, China
| | - Zhanqiang Fang
- China Guangdong Technology Research Center for Ecological Management and Remediation of Urban Water System, Guangzhou, 510006, China
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Preparation of multi-dimensional (1D/2D/3D) carbon/g-C3N4 composite photocatalyst with enhanced visible-light catalytic performance. J Colloid Interface Sci 2020; 569:320-331. [DOI: 10.1016/j.jcis.2020.02.100] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 02/24/2020] [Accepted: 02/25/2020] [Indexed: 11/18/2022]
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Li J, Qi Y, Mei Y, Ma S, Li Q, Xin B, Yao T, Wu J. Construction of phosphorus-doped carbon nitride/phosphorus and sulfur co-doped carbon nitride isotype heterojunction and their enhanced photoactivity. J Colloid Interface Sci 2020; 566:495-504. [PMID: 32058102 DOI: 10.1016/j.jcis.2020.01.102] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 01/05/2020] [Accepted: 01/25/2020] [Indexed: 10/25/2022]
Abstract
Photocatalysis was one of the most promising techniques for environmental remediation. Exploring photocatalysts with high efficiency, low cost and easy preparation was still an ongoing issue. In this work, phosphorus-doped carbon nitride/phosphorus and sulfur co-doped carbon nitride (P-C3N4/PS-C3N4) isotype heterojunction was prepared by a two-step calcination method. The composite displayed a sheet-like structure with a surface area of 23 m2/g. Compared with pure C3N4, band gaps of P-C3N4 and PS-C3N4 were only slightly modified during the heteroatom-doping process. Therefore, a well-matched band alignment was constructed, which not only improved the separation efficiency of photogenerated electron-hole pairs, but also well preserved the high oxidizability of holes on valance band and good reducibility of electrons on conduction band. Because of the similarity in physicochemical properties, the interface resistance between P-C3N4 and PS-C3N4 was low, which accelerated the electron transfer and prolonged the lifetime of charge carriers. Although the visible-light utilization was somewhat low in comparison with P-C3N4 and PS-C3N4, by taking advantage of above merits, P-C3N4/PS-C3N4 displayed the high photocatalytic activity in rhodamine B degradation, and the reaction rate constant was 0.183 min-1, about 8.7 and 4.0 times higher than those of P-C3N4 and PS-C3N4. Besides high catalytic activity, isotype heterojunction displayed good recyclability, since 95.3% of catalytic activity was maintained after the 5th cycle. The method presented here was facile, economic and environmentally benign, thus it was highly attractive for the application in environmental remediation.
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Affiliation(s)
- Jiaqi Li
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, China
| | - Yi Qi
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, China
| | - Yuqing Mei
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, China
| | - Shouchun Ma
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, China
| | - Qi Li
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, China
| | - Baifu Xin
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, China.
| | - Tongjie Yao
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, China.
| | - Jie Wu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, China.
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