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Boddepalli R, Gurugubelli TR, S V N P, Netheti VSB, Yusub S, Tamtam MR, Koutavarapu R, Pidaparthy LS. Efficiency and mechanistic insights of photocatalytic decomposition of tetracycline and rhodamine B utilizing Z-scheme g-C 3N 4/SnWO 4 heterostructures under visible light irradiation. ENVIRONMENTAL RESEARCH 2024; 254:119163. [PMID: 38759770 DOI: 10.1016/j.envres.2024.119163] [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: 02/19/2024] [Revised: 05/09/2024] [Accepted: 05/15/2024] [Indexed: 05/19/2024]
Abstract
The hydrothermal approach was used in the design and construction of the SnWO4 (SW) nanoplates anchored g-C3N4 (gCN) nanosheet heterostructures. Morphology, optical characteristics, and phase identification were investigated. The heterostructure architect construction and successful interface interaction were validated by the physicochemical characteristics. The test materials were used as a photocatalyst in the presence of visible light to break down the antibiotic tetracycline (TC) and the organic Rhodamine B (RhB). The best photocatalytic degradation efficiency of TC (97%) and RhB (98%) pollutants was demonstrated by the optimized 15 mg of gCNSW-7.5 in 72 and 48 min, respectively, at higher rate constants of 0.0409 and 0.0772 min-1. The interface contact between gCN and SW, which successfully enhanced charge transfer and restricted recombination rate in the photocatalyst, is responsible for the enhanced performance of the gCNSW heterostructure photocatalyst. In addition, the gCNSW heterostructure photocatalyst demonstrated exceptional stability and reusability over the course of four successive testing cycles, highlighting its durable and dependable function. Superoxide radicals and holes were shown to be key players in the degradation of contaminants through scavenger studies. The charge transfer mechanism in the heterostructure is identified as Z-scheme mode with the help of UV-vis DRS analysis. Attributed to its unique structural features, and effective separation of charge carriers, the Z-scheme gCNSW-7.5 heterostructure photocatalyst exhibits significant promise as an exceptionally efficient catalyst for the degradation of pollutants. This positions it as a prospective material with considerable potential across various environmental applications.
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Affiliation(s)
- Ramu Boddepalli
- Department of Physics, Andhra University, Visakhapatnam, 530 003, Andhra Pradesh, India
| | | | - Pammi S V N
- Department of Physics, School of Sciences, SR University, Warangal, 506 371, Telangana, India
| | - V S Bhagavan Netheti
- Department of Physics, Dr. VS Krishna Govt. Degree College (Autonomous), Visakhapatnam, 530 013, Andhra Pradesh, India
| | - S Yusub
- Freshman Engineering Department, Lakireddy Bali Reddy College of Engineering (Autonomous), Mylavaram, 521 230, Andhra Pradesh, India
| | - Mohan Rao Tamtam
- Data Science Lab, Department of Information and Communication Engineering, College of Mechanical and IT Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea.
| | - Ravindranadh Koutavarapu
- Physics Division, Department of Basic Sciences and Humanities, GMR Institute of Technology, Rajam, 532 127, Andhra Pradesh, India.
| | - Lalitha Saranya Pidaparthy
- Department of Physics, Andhra University, Visakhapatnam, 530 003, Andhra Pradesh, India; Department of Physics, Visakha Govt. Degree College (W), Visakhapatnam, 530 020, Andhra Pradesh, India.
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Bang Truong H, Cuong Nguyen X, Hur J. Recent advances in g-C 3N 4-based photocatalysis for water treatment: Magnetic and floating photocatalysts, and applications of machine-learning techniques. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 345:118895. [PMID: 37659370 DOI: 10.1016/j.jenvman.2023.118895] [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: 06/15/2023] [Revised: 08/08/2023] [Accepted: 08/27/2023] [Indexed: 09/04/2023]
Abstract
Over the past decade, there has been a substantial increase in research investigating the potential of graphitic carbon nitride (g-C3N4) for various environmental remediations. Renowned for its photocatalytic activity under visible light, g-C3N4 offers a promising solution for treating water pollutants. However, traditional g-C3N4-based photocatalysts have inherent drawbacks, creating a disparity between laboratory efficacy and real-world applications. A primary practical challenge is their fine-powdered form, which hinders separation and recycling processes. A promising approach to address these challenges involves integrating magnetic or floating materials into conventional photocatalysts, a strategy gaining traction within the g-C3N4-based photocatalyst arena. Another emerging solution to enhance practical applications entails merging experimental results with contemporary computational methods. This synergy seeks to optimize the synthesis of more efficient photocatalysts and pinpoint optimal conditions for pollutant removal. While numerous review articles discuss the laboratory-based photocatalytic applications of g-C3N4-based materials, there is a conspicuous absence of comprehensive coverage regarding state-of-the-art research on improved g-C3N4-based photocatalysts for practical applications. This review fills this void, spotlighting three pivotal domains: magnetic g-C3N4 photocatalysts, floating g-C3N4 photocatalysts, and the application of machine learning to g-C3N4 photocatalysis. Accompanied by a thorough analysis, this review also provides perspectives on future directions to enhance the efficacy of g-C3N4-based photocatalysts in water purification.
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Affiliation(s)
- Hai Bang Truong
- Optical Materials Research Group, Science and Technology Advanced Institute, Van Lang University, Ho Chi Minh City, Viet Nam; Faculty of Applied Technology, School of Technology, Van Lang University, Ho Chi Minh City, Viet Nam.
| | - Xuan Cuong Nguyen
- Department of Environment and Energy, Sejong University, Seoul, 05006, South Korea
| | - Jin Hur
- Department of Environment and Energy, Sejong University, Seoul, 05006, South Korea.
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Wang Y, Bai Y, Han C, Li Z, Lun X, Zhang C. Photocatalysis-PMS oxidation system based on CQDs-doped carbon nitride nanosheets for degradation of residual drugs in water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:108538-108552. [PMID: 37752394 DOI: 10.1007/s11356-023-30005-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 09/17/2023] [Indexed: 09/28/2023]
Abstract
Graphite-like carbon nitride (g-C3N4) is favored for its excellent physicochemical properties. However, the high complexation rate of photogenerated carriers greatly limits its practical applications. Based on this, a novel CQDs-doped carbon nitride nanosheets composite (CNS/CQDs) was prepared and applied to the visible light-induced activation of peroxymonosulfate (PMS) for meloxicam (Mel) and tetracycline (TC) degradation. The photocatalytic degradation of Mel and TC were remarkably promoted in the CNS/CQDs+PMS+vis system. Mel photodegradation of 99.90% was achieved over 30 min with 20 mg CNS/CQDs and 20 mg PMS at pH11. And TC photodegradation of 95.97% was achieved over 45 min with 20 mg CNS/CQDs and 20 mg PMS at nature pH6.5. The TOC mineralization rates of Mel and TC were 75.49% and 52.00%, respectively. The transient photocurrent response and electrochemical impedance measurements (EIS) results indicated that the doping of CQDs could improve the charge transfer efficiency of pure g-C3N4, and CNS/CQDs had a low charge transfer resistance. Capture experiments and EPR tests explored the effective actives in the CNS/CQDs+PMS+vis system. Possible degradation pathways of Mel were also analyzed. This study provides valid residual drugs degradation under the dual conditions of visible light catalytic oxidation and persulfate oxidation, which will be a novel perspective for advanced oxidation technology to effectively remove organic pollutants from water.
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Affiliation(s)
- Yongqiang Wang
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Benxi, Liaoning Province, 117004, People's Republic of China
| | - Yibo Bai
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Benxi, Liaoning Province, 117004, People's Republic of China
| | - Che Han
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Benxi, Liaoning Province, 117004, People's Republic of China
| | - Zaimei Li
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Benxi, Liaoning Province, 117004, People's Republic of China
| | - Xiaowen Lun
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Benxi, Liaoning Province, 117004, People's Republic of China
| | - Conglu Zhang
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Benxi, Liaoning Province, 117004, People's Republic of China.
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Zolgharnein J, Goudarzy F, Ghasemi JB. A New Sensitive Fluorescence Sensor and Photocatalyst for Determination and Degradation of Sodium Valproate Using g-C3N4@Fe3O4@CuWO4 Nanocomposite and FCCD Optimization. J Fluoresc 2023; 33:1777-1801. [PMID: 36826727 DOI: 10.1007/s10895-023-03168-5] [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: 12/23/2022] [Accepted: 02/03/2023] [Indexed: 02/25/2023]
Abstract
In this research, carbon nitride nanocomposite coupled with Fe3O4 and CuWO4 was thermally synthesized and characterized by different techniques, including SEM, TEM, XRD, EDX, and FTIR. Due to sodium valproate's luminescence quenching of this nanocomposite, a reliable, accurate, sensitive, selective, and fast-acting sodium valproate assay was proposed. Optimization of this fluorescent sensor was carried out by the FCCD approach. In the optimum conditions, the plot of sodium valproate concentration versus nanocomposite fluorescence emission showed a linear response (R2 = 0.9918), with a range of 0-0.55 µM, the limit of detection (S/N = 3) equal to 0.85 nM and limit of qualification equal to 2.82 nM. Photocatalytic activity of g-C3N4@Fe3O4@CuWO4 (40%) nanocomposite exhibited a good potency to sodium valproate degradation. Active species of degradation including superoxide radicals, holes, and hydroxyl radicals were investigated using ammonium oxalate, benzoquinone, and 2-propanol to identify the mechanism of photodegradation action. The activity of benzoquinone in the photocatalytic process led to a reduction in the rate of analyte degradation, which indicates the prominent role of superoxide radicals compared to other species in the degradation process. The degradation rate of the analyte using the Fenton reagent was found to be around two times more than in the Fenton reagent-free process. The possible mechanism for the fluorescence sensor and photocatalytic degradation reaction was also discussed.
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Affiliation(s)
- J Zolgharnein
- Department of Chemistry, Faculty of Sciences, Arak University, P.O. Box 38156-8-8394, Arak, I.R., Iran.
| | - F Goudarzy
- Department of Chemistry, Faculty of Sciences, Arak University, P.O. Box 38156-8-8394, Arak, I.R., Iran
| | - J B Ghasemi
- School of Chemistry, University College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, I.R., Iran.
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Basyach P, Deb J, Sk S, Pal U, Gogoi M, Sastry GN, Saikia L. Controlled Ni doping on a g-C 3N 4/CuWO 4 photocatalyst for improved hydrogen evolution. Phys Chem Chem Phys 2023; 25:23033-23046. [PMID: 37599612 DOI: 10.1039/d3cp03194b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
The development of a low-cost, environment-friendly and suitable semiconductor-based heterogeneous photocatalyst poses a great challenge towards extremely competent and substantial hydrogen evolution. A series of environment-friendly and proficient S-scheme Ni-doped CuWO4 nanocrystals supported on g-C3N4 nanocomposites (Ni-CuWO4/g-C3N4) were constructed to ameliorate the photocatalytic efficacy of pure g-C3N4 and Ni-CuWO4 and their activity in H2 generation through photocatalytic water splitting was evaluated. The Ni-CuWO4 nanoparticles were synthesized through doping of Ni2+ on wolframite CuWO4 crystals via the chemical precipitation method. An elevated hydrogen generation rate of 1980 μmol h-1 g-1 was accomplished over the 0.2Ni-CuWO4/g-C3N4 (0.2NCWCN) nanocomposite with an apparent quantum yield (AQY) of 6.49% upon visible light illumination (λ ≥ 420 nm), which is evidently 7.1 and 17.2 fold higher than those produced from pristine g-C3N4 and Ni-CuWO4. The substantial enhancement in the photocatalytic behaviour is primarily because of the large surface area, limited band gap energy of the semiconductor composite and magnified light harvesting capability towards visible light through the inclusion of g-C3N4, thus diminishing the reassembly rate of photoinduced excitons. Further, density functional theory (DFT) calculations were performed to investigate the structural, electronic and optical properties of the composite. Theoretical results confirmed that the Ni-CuWO4/g-C3N4 composite is a potential candidate for visible-light-driven photocatalysts and corroborated with the experimental findings. This research provides a meaningful and appealing perspective on developing cost-effective and very proficient two-dimensional (2D) g-C3N4-based materials for photocatalytic H2 production to accelerate the separation and transmission process of radiative charge carriers.
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Affiliation(s)
- Purashri Basyach
- Advanced Materials Group, Materials Sciences & Technology Division, CSIR-North East Institute of Science and Technology, Jorhat-785006, Assam, India.
- Academy of Scientific and Innovative Research, Ghaziabad, UP, India
| | - Jyotirmoy Deb
- Advanced Computation and Data Sciences Division, CSIR-North East Institute of Science and Technology, Jorhat-785006, Assam, India
| | - Saddam Sk
- Academy of Scientific and Innovative Research, Ghaziabad, UP, India
- Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
| | - Ujjwal Pal
- Academy of Scientific and Innovative Research, Ghaziabad, UP, India
- Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
| | - Madhulekha Gogoi
- Advanced Materials Group, Materials Sciences & Technology Division, CSIR-North East Institute of Science and Technology, Jorhat-785006, Assam, India.
| | - G Narahari Sastry
- Academy of Scientific and Innovative Research, Ghaziabad, UP, India
- Advanced Computation and Data Sciences Division, CSIR-North East Institute of Science and Technology, Jorhat-785006, Assam, India
| | - Lakshi Saikia
- Advanced Materials Group, Materials Sciences & Technology Division, CSIR-North East Institute of Science and Technology, Jorhat-785006, Assam, India.
- Academy of Scientific and Innovative Research, Ghaziabad, UP, India
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Basyach P, Prajapati PK, Rohman SS, Sonowal K, Kalita L, Malik A, Guha AK, Jain SL, Saikia L. Visible Light-Active Ternary Heterojunction Photocatalyst for Efficient CO 2 Reduction with Simultaneous Amine Oxidation and Sustainable H 2O 2 Production. ACS APPLIED MATERIALS & INTERFACES 2023; 15:914-931. [PMID: 36580037 DOI: 10.1021/acsami.2c16549] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The present work described a unique approach for CO2 reduction to methanol along with the oxidation of various amines to the corresponding imines and photocatalytic H2O2 production from H2O and molecular O2 using a heterojunction photocatalyst made up of ZnIn2S4/Ni12P5/g-C3N4(NCZ) under visible light irradiation. The photocatalysts were synthesized via a high-temperature treatment of nickel and phosphorous precursors with g-C3N4 followed by decoration of ZnIn2S4. The synthesized photocatalysts were characterized using various spectroscopic and microscopic techniques. The density functional theory (DFT) studies suggested the participation of the valence band maximum (VBM) from Ni12P5 and the conduction band maximum (CBM) from ZnIn2S4 in the ternary NCZ heterojunction. The ternary composite exhibited superior photocatalytic activity compared to that of its individual components due to the formation of a heterojunction, thereby enhancing the transfer efficiency of electrons from the conduction band of g-C3N4 to that of ZnIn2S4 using Ni12P5 as an electron bridge. Moreover, the reduced band gap of the ternary heterojunction played a key role in its higher efficiency.
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Affiliation(s)
- Purashri Basyach
- Advanced Materials Group, CSIR-North East Institute of Science and Technology, Jorhat785006, India
- Academy of Scientific and Innovative Research, Ghaziabad201002, India
| | - Pankaj Kumar Prajapati
- Synthetic Chemistry and Petrochemicals Area, Chemical and Material Sciences Division, CSIR-Indian Institute of Petroleum, Dehradun248005, India
- Academy of Scientific and Innovative Research, Ghaziabad201002, India
| | - Shahnaz S Rohman
- Department of Chemistry, Cotton University, Guwahati781001, India
| | - Karanika Sonowal
- Advanced Materials Group, CSIR-North East Institute of Science and Technology, Jorhat785006, India
- Academy of Scientific and Innovative Research, Ghaziabad201002, India
| | - Lisamoni Kalita
- Advanced Materials Group, CSIR-North East Institute of Science and Technology, Jorhat785006, India
- Academy of Scientific and Innovative Research, Ghaziabad201002, India
| | - Anil Malik
- Synthetic Chemistry and Petrochemicals Area, Chemical and Material Sciences Division, CSIR-Indian Institute of Petroleum, Dehradun248005, India
- Academy of Scientific and Innovative Research, Ghaziabad201002, India
| | - Ankur K Guha
- Department of Chemistry, Cotton University, Guwahati781001, India
| | - Suman L Jain
- Synthetic Chemistry and Petrochemicals Area, Chemical and Material Sciences Division, CSIR-Indian Institute of Petroleum, Dehradun248005, India
| | - Lakshi Saikia
- Advanced Materials Group, CSIR-North East Institute of Science and Technology, Jorhat785006, 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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Balakrishnan A, Chinthala M. Comprehensive review on advanced reusability of g-C 3N 4 based photocatalysts for the removal of organic pollutants. CHEMOSPHERE 2022; 297:134190. [PMID: 35248593 DOI: 10.1016/j.chemosphere.2022.134190] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/24/2022] [Accepted: 03/01/2022] [Indexed: 05/19/2023]
Abstract
Graphitic carbon nitride (g-C3N4) has attained significant research attention in energy and environmental remediation due to its excellent electronic structure, greater physical and chemical properties, and abundance. However, graphitic carbon nitride faces severe problems because of its high recombination rate and higher mass loss of the catalyst during recovery operations. This review emphasizes the methods to overcome the difficulties associated with recovery and reusability of the g-C3N4 based photocatalyst towards the redemption of pollutants present in wastewater. Different strategies like magnetic g-C3N4 based photocatalysts, immobilized photocatalytic systems, and photocatalytic membranes and their usage in photocatalytic applications are well described. Different preparation strategies of the graphic carbon nitride-based composites are elucidated. The key challenges and future perspectives of adopting these methods for photocatalytic applications are also mentioned.
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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.
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Vinesh V, Preeyanghaa M, Kumar TRN, Ashokkumar M, Bianchi CL, Neppolian B. Revealing the stability of CuWO 4/g-C 3N 4 nanocomposite for photocatalytic tetracycline degradation from the aqueous environment and DFT analysis. ENVIRONMENTAL RESEARCH 2022; 207:112112. [PMID: 34600880 DOI: 10.1016/j.envres.2021.112112] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 09/16/2021] [Accepted: 09/21/2021] [Indexed: 06/13/2023]
Abstract
Graphitic carbon nitride (g-C3N4) is an emerging metal-free photocatalyst, however, engineering the photocatalytic efficiency for the effective degradation of hazardous molecules is still challenging. An unstable and low bandgap CuWO4 was composited with g-C3N4 to achieve synergistic benefits of tuning the visible light responsiveness and stability of CuWO4. CuWO4/g-C3N4 nanocomposite exhibited a relatively high visible light absorption region and the bandgap was modified from 2.77 to 2.53 eV evidenced via UV-DRS. Moreover, the fast electron transfer rate was observed with CuWO4/g-C3N4 nanocomposite as confirmed using PL and photocurrent studies. XRD, FT-IR, and HR-TEM analyses signified the formation of CuWO4/g-C3N4 nanocomposite. CuWO4/g-C3N4 nanocomposite showed enhanced photocatalytic degradation of Tetracycline (TC) about ∼7.4 fold greater than pristine g-C3N4 in 120 min. Notably, the OH• and •O2- radicals played a most significant role in photocatalytic TC degradation. Furthermore, the energy band structure, density of state, and Bader charge analyses of these molecules were performed.
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Affiliation(s)
- V Vinesh
- Departments of Physics and Nanotechnology and SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India
| | - M Preeyanghaa
- Departments of Physics and Nanotechnology and SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India
| | - T R Naveen Kumar
- Departments of Physics and Nanotechnology and SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India
| | - Muthupandian Ashokkumar
- The School of Chemistry, University of Melbourne, Parkville, Melbourne, Victoria, 3010, Australia
| | - C L Bianchi
- Department of Chemistry, Università degli Studi di Milano, 20133, Milan, Italy
| | - B Neppolian
- Departments of Physics and Nanotechnology and SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India.
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Zhang L, Shen Q, Zhan R, Zheng S, Sheng J, Yang H. Oxygen-vacancy-mediated photocatalytic degradation of tetracycline under weak visible-light irradiation over hierarchical Bi2MoO6@Bi2O3 core–shell fibers. Catal Sci Technol 2022. [DOI: 10.1039/d1cy02285g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel oxygen-vacancy-rich hierarchical Bi2MoO6@Bi2O3 core–shell fibers were prepared by the in-situ growth of Bi2MoO6 nanosheets on Bi2O3 nanofibers via an electrospinning–calcination–solvothermal method. The in-situ growth contributed to the formation of...
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Habibi MM, Mousavi M, Shadman Z, Ghasemi JB. Preparation of a nonenzymatic electrochemical sensor based on g-C3N4/MWO4 (M: Cu, Mn, Co, Ni) composite for the determination of H2O2. NEW J CHEM 2022. [DOI: 10.1039/d1nj05711a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrogen peroxide (H2O2) has a significant effect on physiological proceedings. In the present research, a g-C3N4-based nanocomposite g-C3N4/MWO4(M: Cu, Mn, Co, Ni) was prepared via the precipitation-calcination method. A...
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Das S, Chowdhury A. Recent advancements of g-C 3N 4-based magnetic photocatalysts towards the degradation of organic pollutants: a review. NANOTECHNOLOGY 2021; 33:072004. [PMID: 34731840 DOI: 10.1088/1361-6528/ac3614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 11/02/2021] [Indexed: 06/13/2023]
Abstract
Heterogeneous photocatalysis premised on advanced oxidation processes has witnessed a broad application perspective, including water purification and environmental remediation. In particular, the graphitic carbon nitride (g-C3N4), an earth-abundant metal-free conjugated polymer, has acquired extensive application scope and interdisciplinary consideration owing to its outstanding structural and physicochemical properties. However, several issues such as the high recombination rate of the photo-generated electron-hole pairs, smaller specific surface area, and lower electrical conductivity curtail the catalytic efficacy of bulk g-C3N4. Another challenging task is separating the catalyst from the reaction medium, limiting their reusability and practical applications. Therefore, several methodologies are adopted strategically to tackle these issues. Attention is being paid, especially to the magnetic nanocomposites (NCs) based catalysts to enhance efficiency and proficient reusability property. This review summarizes the latest progress related to the design and development of magnetic g-C3N4-based NCs and their utilization in photocatalytic systems. The usefulness of the semiconductor heterojunctions on the catalytic activity, working mechanism, and degradation of pollutants are discussed in detail. The major challenges and prospects of using magnetic g-C3N4-based NCs for photocatalytic applications are highlighted in this report.
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Affiliation(s)
- Suma Das
- Organic Electronics & Sensor Laboratory, Department of Physics, National Institute of Technology Silchar, Assam 788010, India
| | - Avijit Chowdhury
- Organic Electronics & Sensor Laboratory, Department of Physics, National Institute of Technology Silchar, Assam 788010, India
- Department of Condensed Matter Physics and Material Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700106, India
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Investigation of Fe-Doped Graphitic Carbon Nitride-Silver Tungstate as a Ternary Visible Light Active Photocatalyst. J CHEM-NY 2021. [DOI: 10.1155/2021/4660423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The rapid population growth and economic development have largely contributed to environmental pollution. Various advanced oxidation processes have been used as the most viable solution for the reduction of recalcitrant pollutants and wastewater treatment. Heterogeneous photocatalysis is one of the broadly used technologies for wastewater treatment among all advanced oxidation processes. Graphitic carbon nitride alone or in combination with various other semiconductor metal oxide materials acts as a competent visible light active photocatalyst for the removal of recalcitrant organic pollutants from wastewater. Rational designing of an environment-friendly photocatalyst through a facile synthetic approach encounters various challenges in photocatalytic technologies dealing with semiconductor metal oxides. Doping in g-C3N4 and subsequent coupling with metal oxides have shown remarkable enhancement in the photodegradation activity of g-C3N4-based nanocomposites owing to the modulation in g-C3N4 bandgap structuring and surface area. In the current study, a novel ternary Fe-doped g-C3N4/Ag2WO4 visible light active photocatalyst was fabricated through an ultrasonic-assisted facile hydrothermal method. Characterization analysis included SEM analysis, FTIR, XRD, XPS, and UV-Visible techniques to elucidate the morphology and chemical structuring of the as-prepared heterostructure. The bandgap energies were assessed using the Tauc plot. The ternary nanocomposite (Fe-CN-AW) showed increased photodegradation efficiency (97%) within 120 minutes, at optimal conditions of pH = 8, catalyst dose = 50 mg/100 ml, an initial RhB concentration of 10 ppm, and oxidant dose 5 mM under sunlight irradiation. The enhanced photodegradation of rhodamine B dye by ternary Fe-CN-AW was credited to multielectron transfer pathways due to insertion of a Fe dopant in graphitic carbon nitride and subsequent coupling with silver tungstate. The data were statistically assessed by the response surface methodology.
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Synthesis of BiF3 and BiF3-Added Plaster of Paris Composites for Photocatalytic Applications. ENERGIES 2021. [DOI: 10.3390/en14165159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A BiF3 powder sample was prepared from the purchased Bi2O3 powder via the precipitation route. The photocatalytic performance of the prepared BiF3 powder was compared with the Bi2O3 powder and recognized as superior. The prepared BiF3 powder sample was added in a plaster of Paris (POP) matrix in the proportion of 0%, 1%, 5%, and 10% by wt% to form POP–BiF3(0%), POP–BiF3(1%), POP–BiF3(5%), and POP–BiF3(10%) composite pellets, respectively, and activated the photocatalytic property under the UV–light irradiation,in the POP. In this work, Resazurin (Rz) ink was utilized as an indicator to examine the photocatalytic activity and self-cleaning performance of POP–BiF3(0%), POP–BiF3(1%), POP–BiF3(5%), and POP–BiF3(10%) composite pellets. In addition to the digital photographic method, the UV–visible absorption technique was adopted to quantify the rate of the de-colorization of the Rz ink, which is a direct measure of comparative photocatalytic performance of samples.
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Microwave Induced Inverse Spinel NiFe2O4 Decorated g-C3N4 Nanosheet for Enhanced Visible Light Photocatalytic Activity. J CLUST SCI 2021. [DOI: 10.1007/s10876-021-02123-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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16
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Preparation, Characterization of Graphitic Carbon Nitride Photo-Catalytic Nanocomposites and Their Application in Wastewater Remediation: A Review. CRYSTALS 2021. [DOI: 10.3390/cryst11070723] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Energy crisis and environmental pollution are the major problems of human survival and development. Photocatalytic technology can effectively use solar energy and is prospective to solve the above-mentioned problems. Carbon nitride is a two-dimensional polymer material with a graphite-like structure. It has good physical and chemical stabilities, unique chemical and electronic energy band structures, and is widely used in the field of photocatalysis. Graphitic carbon nitride has a conjugated large π bond structure, which is easier to be modified with other compounds. thereby the surface area and visible light absorption range of carbon nitride-based photocatalytic composites can be insignificantly increased, and interface electron transmission and corresponding photogenerated carriers separation of streams are simultaneously promoted. Therefore, the present study systematically introduced the basic catalytic principles, preparation and modification methods, characterization and calculation simulation of carbon nitride-based photocatalytic composite materials, and their application in wastewater treatment. We also summarized their application in wastewater treatment with the aid of artificial intelligence tools. This review summarized the frontier technology and future development prospects of graphite phase carbon nitride photocatalytic composites, which provide a theoretical reference for wastewater purification.
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Zhang H, Yan Y, Khan MA, Xia M, Lei W, Wang F. Preparation of spherical filler-like ZnFe 2O 4/Bi 2MoO 6 surrounded by nanosheets and its photocatalytic applications. ENVIRONMENTAL TECHNOLOGY 2021; 42:2077-2084. [PMID: 31701807 DOI: 10.1080/09593330.2019.1691664] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 10/23/2019] [Indexed: 06/10/2023]
Abstract
In this article, the spherical filler-like ZnFe2O4/Bi2MoO6 (ZFO/BMO) surrounded by nanosheets were synthesized by a solvothermal method using spherical ZnFe2O4 as a matrix. Scanning electron microscope (SEM), X-ray diffraction (XRD), Photoluminescence (PL), Fourier transform infrared spectroscopy (FT-IR) and Diffuse reflectance spectra (DRS) were used to characterize the prepared samples. The photocatalytic performance of the material was detected under 420 nm visible light by Rhodamine B (RhB). The degradation results indicated that the ZFO/BMO photocatalyst with 20% ZnFe2O4 content (ZFO/BMO-2) demonstrated highly efficient performance. The constructed Z-type ZFO/BMO heterojunction lengthens the visible light absorption threshold and improves the photocatalytic activity. Furthermore, ZFO/BMO heterojunction composite photocatalyst can be recycled effectively by applying an appropriate external magnetic field. It has important research value in photocatalysis and recycling.
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Affiliation(s)
- Hongling Zhang
- Nanjing Institute of Enivironmental Sciences, Ministry of Ecology and Environment, Nanjing, People's Republic of China
| | - Yanghao Yan
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, People's Republic of China
| | - Muhammad Asim Khan
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, People's Republic of China
| | - Mingzhu Xia
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, People's Republic of China
| | - Wu Lei
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, People's Republic of China
| | - Fengyun Wang
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, People's Republic of China
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Enhanced photocatalytic reduction of mercuric cations endorsing fabricated mesoporous BiFeO3/g-C3N4 heterojunction under Vis light irradiation. APPLIED NANOSCIENCE 2020. [DOI: 10.1007/s13204-020-01607-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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19
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Moura JP, Reis RY, Lima AE, Santos RS, Luz GE. Improved photoelectrocatalytic properties of ZnO/CuWO4 heterojunction film for RhB degradation. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112778] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Construction of carbon nanotube mediated Fe doped graphitic carbon nitride and Ag3VO4 based Z-scheme heterojunction for H2O2 assisted 2,4 dimethyl phenol photodegradation. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116957] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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21
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He T, Wu Y, Jiang C, Chen Z, Wang Y, Liu G, Xu Z, Ning G, Chen X, Zhao Y. Novel magnetic Fe3O4/g-C3N4/MoO3 nanocomposites with highly enhanced photocatalytic activities: Visible-light-driven degradation of tetracycline from aqueous environment. PLoS One 2020; 15:e0237389. [PMID: 32797116 PMCID: PMC7428356 DOI: 10.1371/journal.pone.0237389] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 07/24/2020] [Indexed: 11/28/2022] Open
Abstract
In the present work, a series of magnetically separable Fe3O4/g-C3N4/MoO3 nanocomposite catalysts were prepared. The as-prepared catalysts were characterized by XRD, EDX, TEM, FT-IR, UV-Vis DRS, TGA, PL, BET and VSM. The photocatalytic activity of photocatalytic materials was evaluated by catalytic degradation of tetracycline solution under visible light irradiation. Furthermore, the influences of weight percent of MoO3 and scavengers of the reactive species on the degradation activity were investigated. The results showed that the Fe3O4/g-C3N4/MoO3 (30%) nanocomposites exhibited highest removal ability for TC, 94% TC was removed during the treatment. Photocatalytic activity of Fe3O4/g-C3N4/MoO3 (30%) was about 6.9, 5, and 19.9-fold higher than those of the MoO3, g-C3N4, and Fe3O4/g-C3N4 samples, respectively. The excellent photocatalytic performance was mainly attributed to the Z-scheme structure formed between MoO3 and g-C3N4, which enhanced the efficient separation of the electron-hole and sufficient utilization charge carriers for generating active radials. The highly improved activity was also partially beneficial from the increase in adsorption of the photocatalysts in visible range due to the combinaion of Fe3O4. Superoxide ions (·O2-) was the primary reactive species for the photocatalytic degradation of TC, as degradation rate were decreased to 6% in solution containing benzoquinone (BQ). Data indicate that the novel Fe3O4/g-C3N4/MoO3 was favorable for the degradation of high concentrations of tetracycline in water.
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Affiliation(s)
- Tianpei He
- Hunan Provincial Key Laboratory for Forestry Biotechnology, Central South University of Forestry and Technology, Changsha, China
| | - Yaohui Wu
- Hunan Provincial Key Laboratory for Forestry Biotechnology, Central South University of Forestry and Technology, Changsha, China
- Hunan Research Center of Engineering Technology for Utilization of Environmental and Resources Plant, Central South University of Forestry and Technology, Changsha, China
| | - Chenyang Jiang
- Hunan Provincial Key Laboratory for Forestry Biotechnology, Central South University of Forestry and Technology, Changsha, China
| | - Zhifen Chen
- Hunan Provincial Key Laboratory for Forestry Biotechnology, Central South University of Forestry and Technology, Changsha, China
| | - Yonghong Wang
- Hunan Provincial Key Laboratory for Forestry Biotechnology, Central South University of Forestry and Technology, Changsha, China
| | - Gaoqiang Liu
- Hunan Provincial Key Laboratory for Forestry Biotechnology, Central South University of Forestry and Technology, Changsha, China
| | - Zhenggang Xu
- Hunan Research Center of Engineering Technology for Utilization of Environmental and Resources Plant, Central South University of Forestry and Technology, Changsha, China
- Hunan Urban and Rural Ecological Planning and Restoration Engineering Research Center, Hunan City University, Hunan, China
| | - Ge Ning
- International Education Institute, Hunan University of Chinese Medicine, Changsha, China
| | - Xiaoyong Chen
- Hunan Provincial Key Laboratory for Forestry Biotechnology, Central South University of Forestry and Technology, Changsha, China
| | - Yunlin Zhao
- Hunan Research Center of Engineering Technology for Utilization of Environmental and Resources Plant, Central South University of Forestry and Technology, Changsha, China
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Tameu Djoko SY, Bashiri H, Njoyim ET, Arabameri M, Djepang S, Tamo AK, Laminsi S, Tasbihi M, Schwarze M, Schomäcker R. Urea and green tea like precursors for the preparation of g-C3N4 based carbon nanomaterials (CNMs) composites as photocatalysts for photodegradation of pollutants under UV light irradiation. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112596] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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23
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Askari N, Beheshti M, Mowla D, Farhadian M. Synthesis of CuWO4/Bi2S3 Z-scheme heterojunction with enhanced cephalexin photodegradation. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112463] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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24
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Liu W, Yanase T, Iwasa N, Mukai S, Iwamura S, Nagahama T, Shimada T. Post-annealed graphite carbon nitride nanoplates obtained by sugar-assisted exfoliation with improved visible-light photocatalytic performance. J Colloid Interface Sci 2020; 567:369-378. [PMID: 32070882 DOI: 10.1016/j.jcis.2020.02.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 01/21/2020] [Accepted: 02/10/2020] [Indexed: 11/27/2022]
Abstract
Two-dimensional (2D) graphitic carbon nitride (g-C3N4) nanoplates (CNNP) have become a hot research topic in photocatalysis due to their small thickness and large specific surface area that favors charge transport and catalytic surface reactions. However, the wide application of 2D g-C3N4 nanoplates prepared by ordinary methods suffers from increased band gaps with a poor solar harvesting capability caused by the strong quantum confinement effect and reduced conjugation distance. In this paper, a facile approach of exfoliation and the following fast thermal treatment of the bulk g-C3N4 is proposed to obtain a porous few-layered g-C3N4 with nitrogen defects. Due to the preferable crystal, textural, optical and electronic structures, the as-obtained porous CNNP demonstrated a significantly improved photocatalytic activity towards water splitting than the bulk g-C3N4 and even the 3 nm-thick CNNP obtained by sugar-assisted exfoliation of the bulk g-C3N4. The difference in the enhancement factors between the H2O splitting and organic decomposition has revealed the effect of N defects. This study offers insightful outlooks on the scalable fabrication of a porous few-layered structure with a promoted photocatalytic performance.
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Affiliation(s)
- Wei Liu
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-Ku, Sapporo, Hokkaido 060-8628, Japan
| | - Takashi Yanase
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-Ku, Sapporo, Hokkaido 060-8628, Japan
| | - Nobuhiro Iwasa
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-Ku, Sapporo, Hokkaido 060-8628, Japan
| | - Shin Mukai
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-Ku, Sapporo, Hokkaido 060-8628, Japan
| | - Shinichiro Iwamura
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-Ku, Sapporo, Hokkaido 060-8628, Japan
| | - Taro Nagahama
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-Ku, Sapporo, Hokkaido 060-8628, Japan
| | - Toshihiro Shimada
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-Ku, Sapporo, Hokkaido 060-8628, Japan.
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Baig U, Hawsawi A, Gondal M, Dastageer M. Pulsed laser based synthesis of polymeric-inorganic nanocomposites as efficient visible light active photo-catalysts for the degradation of organic pollutants in water. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112266] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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26
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Zhao J, Ji M, Di J, Zhang Y, He M, Li H, Xia J. Novel Z-scheme heterogeneous photo-Fenton-like g-C3N4/FeOCl for the pollutants degradation under visible light irradiation. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112343] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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27
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A novel synthesis method of mesoporous carbon loaded with Fe3O4 composite for effective adsorption and degradation of sulfamethazine. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112096] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Gao X, Yang B, Yao W, Wang Y, Zong R, Wang J, Li X, Jin W, Tao D. Enhanced photocatalytic activity of ZnO/g-C 3N 4 composites by regulating stacked thickness of g-C 3N 4 nanosheets. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 257:113577. [PMID: 31761595 DOI: 10.1016/j.envpol.2019.113577] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 10/28/2019] [Accepted: 11/03/2019] [Indexed: 06/10/2023]
Abstract
A self-assembly method was adopted to synthesize loading architecture of ZnO/g-C3N4 heterojunction composites by hybridization of g-C3N4 nanosheets and ZnO nanoparticles utilizing a refluxing method at a low temperature. More importantly, we provided a novel route to regulate the π-π restacking thickness of the g-C3N4 nanosheets among ZnO/g-C3N4 composites by the controlling the refluxing time in the ethanol solution, which can optimize the surface hybrid structure, optical response and photocatalytic activity. Among all of samples, ZnO/g-C3N4 composites with a refluxing 12 h showed the enhancement of photocatalytic activity. The enhanced visible light photocatalytic activity of ZCN-12 composites can be ascribed to the synergistic effects of the construction of hybrid structures, reduction of structural defects of g-C3N4 nanosheets and suitable π-π restacking g-C3N4 nanosheets loading thickness.
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Affiliation(s)
- Xingxing Gao
- School of Civil Engineering, University of Science and Technology Liaoning, Anshan, 114051, Liaoning province, PR China; Department of Chemistry, Tsinghua University, Beijing, 100084, PR China
| | - Binzheng Yang
- School of Civil Engineering, University of Science and Technology Liaoning, Anshan, 114051, Liaoning province, PR China
| | - Wenqing Yao
- Department of Chemistry, Tsinghua University, Beijing, 100084, PR China.
| | - Yajun Wang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, 102249, PR China
| | - Ruilong Zong
- Department of Chemistry, Tsinghua University, Beijing, 100084, PR China
| | - Jian Wang
- Department of Chemistry, Tsinghua University, Beijing, 100084, PR China; School of Mining Engineering, University of Science and Technology Liaoning, Anshan, 114051, Liaoning province, PR China
| | - Xianchun Li
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan, 114051, Liaoning province, PR China
| | - Wenjie Jin
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan, 114051, Liaoning province, PR China
| | - Dongping Tao
- School of Mining Engineering, University of Science and Technology Liaoning, Anshan, 114051, Liaoning province, PR China
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Yang P, Wang J, Yue G, Yang R, Zhao P, Yang L, Zhao X, Astruc D. Constructing mesoporous g-C3N4/ZnO nanosheets catalyst for enhanced visible-light driven photocatalytic activity. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112169] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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30
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Ren Z, Chen F, Wen K, Lu J. Enhanced photocatalytic activity for tetracyclines degradation with Ag modified g-C3N4 composite under visible light. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112217] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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31
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Sang Y, Cao X, Dai G, Wang L, Peng Y, Geng B. Facile one-pot synthesis of novel hierarchical Bi 2O 3/Bi 2S 3 nanoflower photocatalyst with intrinsic p-n junction for efficient photocatalytic removals of RhB and Cr(VI). JOURNAL OF HAZARDOUS MATERIALS 2020; 381:120942. [PMID: 31416040 DOI: 10.1016/j.jhazmat.2019.120942] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 07/25/2019] [Accepted: 07/26/2019] [Indexed: 05/09/2023]
Abstract
The construction of heterojunction system can promote the separation and transfer of photogenerated electron-hole pairs, which is conducive to the degradation of sewage. In this paper, heterostructured Bi2O3/Bi2S3 nanoflowers are fabricated by a one-step hydrothermal method. The microstructure and optical absorption properties are studied through the detailed characterization of this heterojunction. The visible light photocatalytic ability of as-prepared Bi2O3/Bi2S3 heterojunctions are investigated by photocatalytic removals of RhB and Cr(VI). The results of photocatalysis indicate that removal efficiencies of RhB and Cr(VI) over Bi2O3/Bi2S3 heterojunction are higher than those of pure Bi2O3 and Bi2S3. The improved photocatalytic performance of the Bi2O3/Bi2S3 heterojunctions could be attributed to a combination of the p-n junction between the p-type Bi2S3 and n-type Bi2O3, and large specific surface areas (46.31 m2 g-1). Moreover, the probable photocatalytic mechanism of composite photocatalysts is explored in detail by active species trapping experiments, N2 adsorption-desorption, the transient photovoltage electrochemical impedance spectroscopy and photoluminescence measurements. This work provides new insights into building of the efficient and novel heterogeneous photocatalysts and other energy-related devices.
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Affiliation(s)
- Yan Sang
- College of Chemistry and Materials Science, the Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, The Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Normal University, Wuhu, 241002, PR China.
| | - Xi Cao
- College of Chemistry and Materials Science, the Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, The Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Normal University, Wuhu, 241002, PR China
| | - Guangdong Dai
- College of Chemistry and Materials Science, the Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, The Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Normal University, Wuhu, 241002, PR China
| | - Lvxuan Wang
- College of Chemistry and Materials Science, the Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, The Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Normal University, Wuhu, 241002, PR China
| | - Yin Peng
- College of Chemistry and Materials Science, the Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, The Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Normal University, Wuhu, 241002, PR China
| | - Baoyou Geng
- College of Chemistry and Materials Science, the Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, The Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Normal University, Wuhu, 241002, PR China.
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Zhou J, Luo H, Ding R, Cao X, Zhou X, Chen Q, Jiang F. Enhanced visible light photocatalytic degradation of sulfamethazine over a S/Gd co-doped graphitic carbon nitride photocatalyst. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.123853] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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33
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He Y, Zeng L, Feng Z, Zhang Q, Zhao X, Ge S, Hu X, Lin H. Preparation, characterization, and photocatalytic activity of novel AgBr/ZIF-8 composites for water purification. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2019.11.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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34
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Preparation of In2S3 nanosheets decorated KNbO3 nanocubes composite photocatalysts with significantly enhanced activity under visible light irradiation. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.115861] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Construction of heterostructure CoWO4/g-C3N4 nanocomposite as an efficient visible-light photocatalyst for norfloxacin degradation. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.08.035] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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37
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Novel magnetically separable γ-Fe2O3/Ag/AgCl/g-C3N4 composite for enhanced disinfection under visible light. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123981] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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38
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Shoja A, Habibi-Yangjeh A, Mousavi M, Vadivel S. Preparation of novel ternary TiO2 QDs/CDs/AgI nanocomposites with superior visible-light induced photocatalytic activity. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.112070] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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39
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Controlled synthesis of reduced graphene oxide supported magnetically separable Fe3O4@rGO@AgI ternary nanocomposite for enhanced photocatalytic degradation of phenol. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2019.08.026] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Urchin-like fibrous red phosphorus as an efficient photocatalyst for solar-light-driven disinfection of E. coli. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.112034] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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He N, Cao S, Zhang L, Tian Z, Chen H, Jiang F. Enhanced photocatalytic disinfection of Escherichia coli K-12 by porous g-C 3N 4 nanosheets: Combined effect of photo-generated and intracellular ROSs. CHEMOSPHERE 2019; 235:1116-1124. [PMID: 31561302 DOI: 10.1016/j.chemosphere.2019.07.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 06/27/2019] [Accepted: 07/01/2019] [Indexed: 05/21/2023]
Abstract
The porous graphitic carbon nitride nanosheets (PCNSs) with high yields were synthesized by using one-step chemical exfoliation method. PCNSs accelerated separation efficiency of photo-generated electron-hole pairs in comparison to bulk graphitic carbon nitride. The PCNS5 (exfoliation for 5 h) exhibited optimal photocatalytic disinfection capability towards Escherichia coli K-12 under simulated solar light irradiation with complete disinfection of 6.5 log10 cfu/mL of E. coil K-12 within 2 h. The enhanced photocatalytic activity of PCNS5 originated from mesoporous nanosheet structure. The possible mechanism of photocatalytic disinfection has proposed that intracellular reactive oxygen species levels and the activities of antioxidant enzymes (e.g., catalase and superoxide dismutase) were enhanced. Transmission electron microscope images observed during photocatalytic disinfection process suggested that the cell membrane was regarded as the first target for oxidation, resulting in a faster leakage of cytoplasmic content and finally degradation of DNA leading to bacterial death. Furthermore, the trapping experiment showed that superoxide radical (•O2-) and holes (h+) were responsible for E. coli K-12 disinfection by PCNS5.
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Affiliation(s)
- Nannan He
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Shihai Cao
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Lihao Zhang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zhidan Tian
- Department of Pathology, Nanjing First Hospital, Nanjing, 210006, China
| | - Huan Chen
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
| | - Fang Jiang
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
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Tian J, Zhu Z, Liu B. Novel Bi2MoO6/Bi2WO6/MWCNTs photocatalyst with enhanced photocatalytic activity towards degradation of RB-19 under visible light irradiation. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123798] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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43
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Gebreslassie G, Bharali P, Chandra U, Sergawie A, Boruah PK, Das MR, Alemayehu E. Novel g-C3N4/graphene/NiFe2O4 nanocomposites as magnetically separable visible light driven photocatalysts. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.111960] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Peymanfar R, Karimi J, Fallahi R. Novel, promising, and broadband microwave‐absorbing nanocomposite based on the graphite‐like carbon nitride/CuS. J Appl Polym Sci 2019. [DOI: 10.1002/app.48430] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Reza Peymanfar
- Young Researchers and Elite Club, Science and Research BranchIslamic Azad University Tehran Iran
| | - Javad Karimi
- Department of Chemical EngineeringEnergy Institute of Higher Education Saveh Iran
| | - Reza Fallahi
- Department of Chemical EngineeringEnergy Institute of Higher Education Saveh Iran
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Akhundi A, Habibi-Yangjeh A, Abitorabi M, Rahim Pouran S. Review on photocatalytic conversion of carbon dioxide to value-added compounds and renewable fuels by graphitic carbon nitride-based photocatalysts. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2019. [DOI: 10.1080/01614940.2019.1654224] [Citation(s) in RCA: 274] [Impact Index Per Article: 54.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Anise Akhundi
- Department of Chemistry, Faculty of Science, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Aziz Habibi-Yangjeh
- Department of Chemistry, Faculty of Science, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Masoud Abitorabi
- Department of Civil Engineering, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Shima Rahim Pouran
- Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
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Feizpoor S, Habibi-Yangjeh A, Ahadzadeh I, Yubuta K. Oxygen-rich TiO2 decorated with C-Dots: Highly efficient visible-light-responsive photocatalysts in degradations of different contaminants. ADV POWDER TECHNOL 2019. [DOI: 10.1016/j.apt.2019.03.014] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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47
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Prasad C, Tang H, Bahadur I. Graphitic carbon nitride based ternary nanocomposites: From synthesis to their applications in photocatalysis: A recent review. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.02.068] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Zhen H, Khan MA, Xia M, Lei W, Wang F. Controllable synthesis of flower-root shaped Bi2O3/Bi2MoO6 heterostructures as an efficient photocatalyst under visible light irradiation. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2018.11.021] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Sudhaik A, Raizada P, Shandilya P, Jeong DY, Lim JH, Singh P. Review on fabrication of graphitic carbon nitride based efficient nanocomposites for photodegradation of aqueous phase organic pollutants. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.07.007] [Citation(s) in RCA: 230] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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50
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Huang J, Cheng W, Shi Y, Zeng G, Yu H, Gu Y, Shi L, Yi K. Honeycomb-like carbon nitride through supramolecular preorganization of monomers for high photocatalytic performance under visible light irradiation. CHEMOSPHERE 2018; 211:324-334. [PMID: 30077113 DOI: 10.1016/j.chemosphere.2018.07.171] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 07/18/2018] [Accepted: 07/28/2018] [Indexed: 06/08/2023]
Abstract
A metal-free modified carbon nitride MCU(DMSO)-C3N4 (3:3:1) with a honeycomb-like morphology was prepared via firstly introducing cyanuric acid and urea into melamine in dimethyl sulfoxide (DMSO) as the precursor for the MCU-C3N4. A variety of characterization methods, including XRD, XPS, FT-IR, SEM, TEM, UV-vis, photoluminescence (PL), and photocurrent generation, were applied to investigate the structure, morphology, optical, and photoelectrochemical properties of the g-C3N4 and MCU-C3N4 (3:3:1). Rhodamine B (RhB), methylene blue (MB), and bisphenol A (BPA) were selected as target pollutants to evaluate photocatalytic activity of the MCU-C3N4 (3:3:1) under visible light irradiation. MCU-C3N4 (3:3:1) exhibits significantly enhanced photocatalytic activity compared with g-C3N4, where 99.49% RhB is removed within 40min, 97.7% MB is removed within 80 min, and 84.37% BPA is removed within 90 min. The improved photodegradation efficiency was mainly due to the larger surface area, the stronger REDOX ability, and the increased separation efficiency of photogenerated electron-hole pairs. The active radical trapping experiments and electron spin resonance tests indicated that h+ and O2- radicals were the dominant active species whereas OH radicals could be a minor factor. A possible photocatalytic mechanism is proposed. This strategy here provides an ideal platform for the design of photocatalysts with large surface area and high porosity for various pollutant controlling applications.
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Affiliation(s)
- Jinhui Huang
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha, Hunan 410082, China.
| | - Wenjian Cheng
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha, Hunan 410082, China
| | - Yahui Shi
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha, Hunan 410082, China
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha, Hunan 410082, China.
| | - Hanbo Yu
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha, Hunan 410082, China
| | - Yanling Gu
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha, Hunan 410082, China
| | - Lixiu Shi
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha, Hunan 410082, China
| | - Kaixin Yi
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha, Hunan 410082, China
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