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Sharma A, Sharotri N, Kandwal P, Sharma RK, Sud D, Rai R, Hnydiuk-Stefan A. Exploring the twin potential of nanostructured TiO 2:SeO 2 as a promising visible light photocatalyst and selective fluorosensing platform. Sci Rep 2024; 14:13677. [PMID: 38871808 DOI: 10.1038/s41598-024-64167-5] [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: 11/21/2023] [Accepted: 06/05/2024] [Indexed: 06/15/2024] Open
Abstract
The present work describes the development of TiO2/SeO2 nanostructure as a potential candidate for visible light photocatalysis as well as selective fluorophore for the sensing of picric acid. The obtained nanostructure consists of uniform globular nanoparticles having approximate size of 170 nm and possess an optical band gap of 2.33 eV with absorption maxima at 473 nm. The photocatalyst was able to achieve 90.34% degradation efficiency for 2, 4-dichlorophenol (2,4-DCP) with rate constant of 0.0046 min-1 in the visible region. Further the nanostructure was able to serve as a selective fluorophore for sensing of Picric acid portraying more than 95% of fluorescence quenching when the concentration of PA is 10-4 M. Theoretical calculations indicate the interaction of organic pollutants with the nanostructure and reveal that both picric acid (- 66.21 kcal/mol) and 2,4-DCP (- 12.31 kcal/mol) possess more negative binding energy values demonstrating a strong interaction of both with the nanostructure, making it suitable for the degradation as well as sensing of organic pollutants. Thus this study explains the potential of prepared catalyst for waste water treatment.
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Affiliation(s)
- Aarti Sharma
- Department of Chemistry, Sant Longowal Institute of Engineering and Technology (Deemed University), Longowal, 148106, Sangrur, Punjab, India
| | - Nidhi Sharotri
- Department of Chemistry, Sant Longowal Institute of Engineering and Technology (Deemed University), Longowal, 148106, Sangrur, Punjab, India
| | - Pankaj Kandwal
- Department of Chemistry, NIT Uttarakhand, Srinagar, Garhwal, 246174, India
| | | | - Dhiraj Sud
- Department of Chemistry, Sant Longowal Institute of Engineering and Technology (Deemed University), Longowal, 148106, Sangrur, Punjab, India
| | - Ritu Rai
- Department of Process and Environmental Engineering, Opole University of Technology, Ul. Prószkowska 76, 45-758, Opole, Poland.
| | - Anna Hnydiuk-Stefan
- Faculty of Production Engineering and Logistics, Opole University of Technology, Ul. Prószkowska 76, 45-758, Opole, Poland
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2
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Wang Y, Zou J, Zhao C, Jiang H, Song Y, Zhang L, Li X, Wang F, Fan L, Liu X, Wei M, Yang L. Building a Charge Transfer Bridge between g-C 3N 4 and Perovskite with Molecular Engineering to Achieve Efficient Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2024; 16:13815-13827. [PMID: 38442230 DOI: 10.1021/acsami.3c19475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
Effective defect passivation and efficient charge transfer within polycrystalline perovskite grains and corresponding boundaries are necessary to achieve highly efficient perovskite solar cells (PSCs). Herein, focusing on the boundary location of g-C3N4 during the crystallization modulation on perovskite, molecular engineering of 4-carboxyl-3-fluorophenylboronic acid (BF) on g-C3N4 was designed to obtain a novel additive named BFCN. With the help of the strong bonding ability of BF with both g-C3N4 and perovskite and favorable intramolecular charge transfer within BFCN, not only has the crystal quality of perovskite films been improved due to the effective defects passivation, but the charge transfer has also been greatly accelerated due to the formation of additional charge transfer channels on the grain boundaries. As a result, the champion BFCN-based PSCs achieve the highest photoelectric conversion efficiency (PCE) of 23.71% with good stability.
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Affiliation(s)
- Yingjie Wang
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130013, China
- National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China
| | - Jinhang Zou
- National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China
| | - Congyu Zhao
- National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China
| | - Haipeng Jiang
- Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yuhuan Song
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130013, China
- National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China
| | - Le Zhang
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130013, China
- National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China
| | - Xin Li
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130013, China
- National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China
| | - Fengyou Wang
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130013, China
- National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China
| | - Lin Fan
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130013, China
- National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China
| | - Xiaoyan Liu
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130013, China
- National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China
| | - Maobin Wei
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130013, China
- National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China
| | - Lili Yang
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130013, China
- National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China
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3
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Long Y, Li Q, Zhang Z, Zeng Q, Liu D, Zhao L, Liu Y, Li Y, Zhang Y, Ji K, Zhou Z, Han X, Wang J. Coupling MoSe 2 with Non-Stoichiometry Ni 0.85 Se in Carbon Hollow Nanoflowers for Efficient Electrocatalytic Synergistic Effect on Li-O 2 Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2304882. [PMID: 37890468 DOI: 10.1002/smll.202304882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 10/04/2023] [Indexed: 10/29/2023]
Abstract
Li-O2 batteries could deliver ultra-high theoretical energy density compared to current Li-ion batteries counterpart. The slow cathode reaction kinetics in Li-O2 batteries, however, limits their electrocatalytic performance. To this end, MoSe2 and Ni0.85 Se nanoflakes were decorated in carbon hollow nanoflowers, which were served as the cathode catalysts for Li-O2 batteries. The hexagonal Ni0.85 Se and MoSe2 show good structural compatibility with the same space group, resulting in a stable heterogeneous structure. The synergistic interaction of the unsaturated atoms and the built-in electric fields on the heterogeneous structure exposes abundant catalytically active sites, accelerating ion and charge transport and imparting superior electrochemical activity, including high specific capacities and stable cycling performance. More importantly, the lattice distances of the Ni0.85 Se (101) plane and MoSe2 (100) plane at the heterogeneous interfaces are highly matched to that of Li2 O2 (100) plane, facilitating epitaxial growth of Li2 O2 , as well as the formation and decomposition of discharge products during the cycles. This strategy of employing nonstoichiometric compounds to build heterojunctions and improve Li-O2 battery performance is expected to be applied to other energy storage or conversion systems.
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Affiliation(s)
- Yuxin Long
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China
| | - Qiang Li
- Shandong Tianhou New Material Technology Co. Ltd., Heze, 274051, China
| | - Zidong Zhang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China
| | - Qingxi Zeng
- Shandong Tianhou New Material Technology Co. Ltd., Heze, 274051, China
| | - Dong Liu
- Shandong Tianhou New Material Technology Co. Ltd., Heze, 274051, China
| | - Lanling Zhao
- School of Physics, Shandong University, Jinan, 250061, China
| | - Yao Liu
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China
| | - Yebing Li
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China
| | - Yiming Zhang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China
| | - Kunqian Ji
- Research Institute of Neuromuscular and Neurodegenerative Diseases and Department of Neurology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China
| | - Zhaorui Zhou
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China
| | - Xue Han
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China
| | - Jun Wang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China
- Shandong Tianhou New Material Technology Co. Ltd., Heze, 274051, China
- Shenzhen Research Institute of Shandong University, Shenzhen, 518063, China
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Ruan X, Wang H, Huang F, Wang F, Yang X. Degradation of 2, 4-dichlorophenol by peroxymonosulfate catalyzed by ZnO/ZnMn 2 O 4. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2024; 96:e10984. [PMID: 38298030 DOI: 10.1002/wer.10984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 12/29/2023] [Accepted: 01/06/2024] [Indexed: 02/02/2024]
Abstract
In this study, a highly efficient peroxymonosulfate (PMS) activator, ZnO/ZnMn2 O4 , was synthesized using a simple one-step hydrothermal method. The resulting bimetallic oxide catalyst demonstrated a homogenous and high-purity composition, showcasing synergistic catalytic activity in activating PMS for degrading 2, 4-dichlorophenol (2, 4-DCP) in aqueous solution. This catalytic performance surpassed that of individual ZnO, Mn2 O3 , and ZnMn2 O4 metal materials. Under the optimized conditions, the removal efficiency of 2, 4-DCP reached approximately 86% within 60 min, and the catalytic ability remained almost constant even after four cycles of recycling. The developed degradation system proved effective in degrading other azo-dye pollutants. Certain inorganic anions such as HPO4 - , HCO3 - , and NO3 - significantly inhibited the degradation of 2, 4-DCP, while Cl- and SO4 2- did not exhibit such interference. Results from electrochemical experiments indicated that the electron transfer ability of ZnO/ZnMn2 O4 surpassed that of individual metals, and electron transfer occurred between ZnO/ZnMn2 O4 and the oxidant. The primary active radicals responsible for degrading 2, 4-DCP were identified as SO4 •- , OH• and O2 •- , generated through the oxidation and reduction of PMS catalyzed by Zn (II) and Mn (III). Furthermore, X-ray photoelectron spectroscopy (XPS) analysis of the fresh and used catalysts revealed that the exceptional electron transfer ability of ZnO facilitated the valence transfer of Mn (III) and the transfer of electrons to the catalyst's oxygen surface, thus enhancing the catalytic efficiency. The analysis of radicals and intermediates indicates that the two main pathways for degrading 2, 4-DCP involve hydroxylation and radical attack on its aromatic ring. PRACTITIONER POINTS: A bimetallic ZnO/ZnMn2 O4 catalyst was synthesized and characterized. ZnO/ZnMn2 O4 can synergistically activate PMS to degrade 2, 4-DCP compared with single metal oxide. Three primary active radicals, O2 •- , • OH, and SO4 •- , were generated to promote the degradation. ZnO promoted electron transfer among the three species of Mn to facilitate oxidizing pollutants. Hydroxylation and radical attack on the aromatic ring of 2, 4-DCP are the two degradation pathways.
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Affiliation(s)
- Xinchao Ruan
- School of Environment Engineering, Wuhan Textile University, Wuhan, China
- Research Center for Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan Textile University, Wuhan, China
| | - Huan Wang
- School of Environment Engineering, Wuhan Textile University, Wuhan, China
| | - Fengyun Huang
- School of Environment Engineering, Wuhan Textile University, Wuhan, China
| | - Fanye Wang
- School of Environment Engineering, Wuhan Textile University, Wuhan, China
| | - Xiaojun Yang
- School of Environment Engineering, Wuhan Textile University, Wuhan, China
- Research Center for Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan Textile University, Wuhan, China
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Moja MM, Mapossa AB, Chirwa EMN, Tichapondwa S. Photocatalytic degradation of 2,4-dichlorophenol using nanomaterials silver halide catalysts. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:11857-11872. [PMID: 38224437 PMCID: PMC10869396 DOI: 10.1007/s11356-024-31921-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 01/04/2024] [Indexed: 01/16/2024]
Abstract
In this study, the photocatalytic activity of nanomaterials Ag/AgX (X = Cl, Br, I) is reported. Highly efficient silver halide (Ag/AgX where X = Cl, Br, I) photocatalysts were synthesized through a hydrothermal method. The samples were characterized using a range of techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET) to check their structural, morphology, textural and optical properties. In addition, the photocatalytic activity of photocatalysts was evaluated through the degradation of 2,4-dichlorophenol (2,4-DCP) under UV and visible light irradiation. XRD analysis confirmed the presence of a single-phase structure (pure phase) in the synthesized photocatalysts. SEM micrographs showed agglomeration with a non-uniform distribution of particles, which is a characteristic of surfactant-free precipitation reactions in aqueous media. The Ag/AgBr photocatalyst exhibited the best degradation efficiency, resulting in 83.37% and 89.39% photodegradation after 5 h of UV and visible light irradiation, respectively. The effect of catalyst loading, initial solution pH, and 2,4-DCP concentration was investigated for the best-performing Ag/AgBr photocatalyst. The degradation kinetics were best described by the pseudo-first-order Langmuir-Hinshelwood model. The photocatalytic capacity of Ag/AgBr decreased by 50% after five reuse cycles. SEM images revealed heightened levels of photodegradation on the catalyst surface. The study proved the feasibility of using simple synthesis methods to produce visible light active photocatalysts capable of degrading refractory phenolic pollutants in aqueous systems.
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Affiliation(s)
- Mahlako Mary Moja
- Department of Chemical Engineering, University of Pretoria, Pretoria, 0002, South Africa
| | - António Benjamim Mapossa
- Department of Chemical Engineering, University of Pretoria, Pretoria, 0002, South Africa.
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive NW, Calgary, AB, T2N 1N4, Canada.
| | | | - Shepherd Tichapondwa
- Department of Chemical Engineering, University of Pretoria, Pretoria, 0002, South Africa
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6
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Xue C, Ma J, Chen X, Liu D, Huang W. Efficient degradation of 2,4-dichlorophenol by heterogeneous electro-Fenton using bulk carbon aerogels modified in situ with FeCo-LDH as cathodes: Operational parameters and mechanism exploration. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 347:119114. [PMID: 37783084 DOI: 10.1016/j.jenvman.2023.119114] [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: 08/12/2023] [Revised: 09/03/2023] [Accepted: 09/10/2023] [Indexed: 10/04/2023]
Abstract
In this study, an in situ grown FeCo-Layered double hydroxide anchored to the surface of a bulk carbon aerogel (FeCo-LDH/CA) for contaminant degradation during the heterogeneous electro-Fenton (EF) process. The results exhibited that the FeCo-LDH/CA cathode achieved 100% of 2,4-dichlorophenol (2,4-DCP = 20 mg/L) degradation within 120 min at pH = 3, application current 20 mA, and Na2SO4 concentration 0.05 M. Moreover, the degradation efficiency was impressive in the range of pH = 2-9. The coexistence of the Fe (III)/Fe (II) and Co (III)/Co (II) as active sites on the cathode surface promoted the in-situ decomposition of H2O2 to form reactive oxygen species (ROS). •OH and O2- were confirmed to be the major degradation pollutants of ROS. Furthermore, density functional theory (DFT) was used to predict the reaction sites of 2,4-DCP, and its possible degradation pathways were proposed. The toxicity of intermediate products was evaluated and decreased after degradation. In addition, the eight cycle experiments and the degradation of other typical contaminants demonstrated the satisfactory stability and applicability of the synthetic cathode. This study presents the preparation of an efficient and stable EF cathode, further promoting the application of iron-based composites in wastewater treatment.
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Affiliation(s)
- Cheng Xue
- College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Jianrui Ma
- China Academy of Information and Communications Technology, Beijing, 100191, China
| | - Xi Chen
- College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Dongfang Liu
- College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.
| | - Wenli Huang
- College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.
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Rajavaram R, Vattikuti SVP, Shim J, Liu X, Hoai NT, Nguyen Dang N. Enriched photocatalytic and photoelectrochemical activities of a 2D/0D g-C 3N 4/CeO 2 nanostructure. NANOSCALE ADVANCES 2023; 5:6489-6500. [PMID: 38024314 PMCID: PMC10662080 DOI: 10.1039/d3na00774j] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 10/07/2023] [Indexed: 12/01/2023]
Abstract
Sunlight-powered photocatalysts made from CeO2 nanosized particles and g-C3N4 nanostructures were produced through a thermal decomposition process with urea and cerium nitrate hexahydrate. The preparation of g-C3N4, CeO2, and a binary nanostructured g-C3N4/CeO2 photocatalyst was done through a facile thermal decomposition method. The structural properties were analyzed using powder X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, energy dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy (XPS). Photocatalyst properties were characterized by using crystal violet (CV), a UV-Vis spectrophotometer, photocurrent and electron impedance spectroscopy (EIS). The structural and morphological analyses revealed that the g-C3N4/CeO2 nanostructures significantly enhanced the photoactivity for CV dye degradation under simulated sunlight, with a degradation rate of 94.5% after 105 min, compared to 82.5% for pure g-C3N4 and 45% for pure CeO2. This improvement was attributed to the noticeable visible light absorption and remarkable charge separation abilities of the nanostructures. Additionally, the g-C3N4/CeO2 nanostructures showed notable PEC performance under simulated sunlight. This study presents an easy and efficient method for producing g-C3N4 photocatalysts decorated with semiconductor materials and provides insights for designing nanostructures for photocatalytic and energy applications.
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Affiliation(s)
| | | | - Jaesool Shim
- School of Mechanical Engineering, Yeungnam University Gyeongsan 38541 Republic of Korea
| | - Xinghui Liu
- Department of Materials Science and Engineering, City University of Hong Kong 83 Tat Chee Avenue Hong Kong 999077 China
| | - Nguyen To Hoai
- Future Materials & Devices Lab., Institute of Fundamental and Applied Sciences, Duy Tan University Ho Chi Minh City 700000 Vietnam
- The Faculty of Environmental and Chemical Engineering, Duy Tan University Danang 550000 Vietnam
| | - Nam Nguyen Dang
- Future Materials & Devices Lab., Institute of Fundamental and Applied Sciences, Duy Tan University Ho Chi Minh City 700000 Vietnam
- The Faculty of Environmental and Chemical Engineering, Duy Tan University Danang 550000 Vietnam
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Ali W, Li Z, Bai L, Ansar MZ, Zada A, Qu Y, Shaheen S, Jing L. Controlled Synthesis of Ag-SnO2/α-Fe2O3 Nanocomposites for Improving Visible-Light Catalytic Activities of Pollutant Degradation and CO2 Reduction. Catalysts 2023. [DOI: 10.3390/catal13040696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023] Open
Abstract
The key to developing highly active α-Fe2O3-based photocatalysts is to improve the charge separation and efficiently utilize the electrons with sufficient thermodynamic energy. Herein, α-Fe2O3 nanosheets (FO) were synthesized using a metal-ion-intervened hydrothermal method and then coupled with SnO2 nanosheets (SO) to obtain SO/FO nanocomposites. Subsequently, nanosized Ag was selectively loaded on SO using the photo-deposition method to result in the ternary Ag-SO/FO nanocomposites. The optimal nanocomposite could realize the efficient aerobic degradation of 2,4-dichlorophenol as a representative organic pollutant under visible-light irradiation (>420 nm), exhibiting nearly six-fold degradation rates of that for FO. Additionally, the Ag-SO/FO photocatalyst is also applicable to the visible-light degradation of other organic pollutants and even CO2 reduction. By using steady-state surface photovoltage spectroscopy, fluorescence spectroscopy, and electrochemical methods, the photoactivity enhancement of Ag-SO/FO is principally attributed to the improved charge separation by introducing SO as an electron platform for the high-energy-level electrons of FO. Moreover, nanosized Ag on SO functions as a cocatalyst to further improve the charge separation and facilitate the catalytic reduction. This work provides a feasible design strategy for narrow-bandgap semiconductor-based photocatalysts by combining an electron platform and a cocatalyst.
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Affiliation(s)
- Wajid Ali
- Key Laboratory of Functional Inorganic Materials Chemistry, School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Ministry of Education, Harbin 150080, China
| | - Zhijun Li
- Key Laboratory of Functional Inorganic Materials Chemistry, School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Ministry of Education, Harbin 150080, China
| | - Linlu Bai
- Key Laboratory of Functional Inorganic Materials Chemistry, School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Ministry of Education, Harbin 150080, China
| | - Muhammad Zaka Ansar
- National Institute of Vacuum Science and Technology, Islamabad 45400, Pakistan
| | - Amir Zada
- Department of Chemistry, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa 23200, Pakistan
| | - Yang Qu
- Key Laboratory of Functional Inorganic Materials Chemistry, School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Ministry of Education, Harbin 150080, China
| | - Shabana Shaheen
- Key Laboratory of Functional Inorganic Materials Chemistry, School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Ministry of Education, Harbin 150080, China
| | - Liqiang Jing
- Key Laboratory of Functional Inorganic Materials Chemistry, School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Ministry of Education, Harbin 150080, China
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9
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Humayun M, Ullah H, Hu C, Tian M, Pi W, Zhang Y, Luo W, Wang C. Enhanced Photocatalytic H 2 Evolution Performance of the Type-II FeTPPCl/Porous g-C 3N 4 Heterojunction: Experimental and Density Functional Theory Studies. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 36892209 DOI: 10.1021/acsami.3c01683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
It is of great significance to improve the photocatalytic performance of g-C3N4 by promoting its surface-active sites and engineering more suitable and stable redox couples. Herein, first of all, we fabricated porous g-C3N4 (PCN) via the sulfuric acid-assisted chemical exfoliation method. Then, we modified the porous g-C3N4 with iron(III) meso-tetraphenylporphine chloride (FeTPPCl) porphyrin via the wet-chemical method. The as-fabricated FeTPPCl-PCN composite revealed exceptional performance for photocatalytic water reduction by evolving 253.36 and 8301 μmol g-1 of H2 after visible and UV-visible irradiation for 4 h, respectively. The performance of the FeTPPCl-PCN composite is ∼2.45 and 4.75-fold improved compared to that of the pristine PCN photocatalyst under the same experimental conditions. The calculated quantum efficiencies of the FeTPPCl-PCN composite for H2 evolution at 365 and 420 nm wavelengths are 4.81 and 2.68%, respectively. This exceptional H2 evolution performance is because of improved surface-active sites due to porous architecture and remarkably improved charge carrier separation via the well-aligned type-II band heterostructure. Besides, we also reported the correct theoretical model of our catalyst through density functional theory (DFT) simulations. It is found that the hydrogen evolution reaction (HER) activity of FeTPPCl-PCN arises from the electron transfer from PCN via Cl atom(s) to Fe of the FeTPPCl, which forms a strong electrostatic interaction, leading to a decreased local work function on the surface of the catalyst. We suggest that the resultant composite would be a perfect model for the design and fabrication of high-efficiency heterostructure photocatalysts for energy applications.
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Affiliation(s)
- Muhammad Humayun
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Engineering Research Center for Functional Ceramics of the Ministry of Education, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Habib Ullah
- Department of Renewable Energy, Faculty of Environment, Science and Economy, University of Exeter, Penryn Campus, Cornwall TR10 9FE, United Kingdom
- Department of Engineering, Faculty of Environment, Science and Economy, University of Exeter, Exeter EX4 4QF, United Kingdom
| | - Chao Hu
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Engineering Research Center for Functional Ceramics of the Ministry of Education, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
- School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, China
| | - Mi Tian
- Department of Engineering, Faculty of Environment, Science and Economy, University of Exeter, Exeter EX4 4QF, United Kingdom
| | - Wenbo Pi
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Engineering Research Center for Functional Ceramics of the Ministry of Education, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Yi Zhang
- School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, China
| | - Wei Luo
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Engineering Research Center for Functional Ceramics of the Ministry of Education, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Chundong Wang
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Engineering Research Center for Functional Ceramics of the Ministry of Education, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
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10
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Yan J, Chen C, Sun H, Su X, Zhang S. Mechanism of nitrogen-doped biochar activated peroxymonosulfate for degradation of 2,4-dichlorophenol. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:37475-37486. [PMID: 36574126 DOI: 10.1007/s11356-022-24950-1] [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: 10/17/2022] [Accepted: 12/20/2022] [Indexed: 06/18/2023]
Abstract
Biochar activated peroxymonosulfate has been widely used to degrade organic pollutants. However, the chemical inertness of the sp2 hybrid conjugated carbon framework and the limited number of active sites on the pristine biochar resulted in the low catalytic activity of the system, restricting its further application. In this study, nitrogen-doped biochar was prepared following a simple one-step synthesis method taking advantage of the similar atomic radius and significant difference in electronegativity of N and C atoms to explore the properties and mechanisms of biochar-mediated peroxymonosulfate activation to degrade 2,4-dichlorophenol. Results from degradation experiments revealed that the catalytic efficiency of the prepared nitrogen-doped biochar was approximately 37.8 times higher than that of the undoped biochar. Quenching experiments combined with Electron paramagnetic resonance (EPR) analysis illustrated that the generated singlet oxygen (1O2) and superoxide anion radical (O2•-) were the main reactive oxidative species that dominated the target organics removal processes. This work will provide a theoretical basis for expanding the practical application of nitrogen-doped biochar to remediate water pollution via peroxymonosulfate activation.
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Affiliation(s)
- Jincan Yan
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, People's Republic of China
| | - Chen Chen
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, People's Republic of China
| | - Hao Sun
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, People's Republic of China
| | - Xiaosi Su
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, People's Republic of China
- Institute of Water Resources and Environment, Jilin University, No. 2519, Jiefang Road, Changchun, 130026, People's Republic of China
| | - Shengyu Zhang
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, People's Republic of China.
- Institute of Water Resources and Environment, Jilin University, No. 2519, Jiefang Road, Changchun, 130026, People's Republic of China.
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11
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Sivakumar S, Thangadurai TD, Nataraj D. Role of Interfacial AuNPs in Solid-state Direct Z-scheme MoS2/Au/g-C3N4 Heterojunction Nanocomposite’s Pollutant Degradation activity under sunlight. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131365] [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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12
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Noureen L, Wang Q, Humayun M, Shah WA, Xu Q, Wang X. Recent advances in structural engineering of photocatalysts for environmental remediation. ENVIRONMENTAL RESEARCH 2023; 219:115084. [PMID: 36535396 DOI: 10.1016/j.envres.2022.115084] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 12/07/2022] [Accepted: 12/14/2022] [Indexed: 06/17/2023]
Abstract
Photocatalysis appears to be an appealing approach for environmental remediation including pollutants degradation in water, air, and/or soil, due to the utilization of renewable and sustainable source of energy, i.e., solar energy. However, their broad applications remain lagging due to the challenges in pollutant degradation efficiency, large-scale catalyst production, and stability. In recent decades, massive efforts have been devoted to advance the photocatalysis technology for improved environmental remediation. In this review, the latest progress in this aspect is overviewed, particularly, the strategies for improved light sensitivity, charge separation, and hybrid approaches. We also emphasize the low efficiency and poor stability issues with the current photocatalytic systems. Finally, we provide future suggestions to further enhance the photocatalyst performance and lower its large-scale production cost. This review aims to provide valuable insights into the fundamental science and technical engineering of photocatalysis in environmental remediation.
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Affiliation(s)
- Laila Noureen
- School of Environment and Energy, Shenzhen Graduate School, Peking University, Shenzhen, 518055, China
| | - Qian Wang
- School of Advanced Materials, Shenzhen Graduate School, Peking University, Shenzhen, 518055, China
| | - Muhammad Humayun
- School of Optical and Electronics Information, Wuhan National Laboratory for Optoelectronic, Huazhong University of Science and Technology, Wuhan, 430074, China
| | | | - Qiyong Xu
- School of Environment and Energy, Shenzhen Graduate School, Peking University, Shenzhen, 518055, China.
| | - Xinwei Wang
- School of Advanced Materials, Shenzhen Graduate School, Peking University, Shenzhen, 518055, China.
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13
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Yu W, Xu M, Liang X, Wang J, Fang W, Wang F. Construction of a novel Cu 1.8S/NH 2-La MOFs decorated Black-TNTs photoanode electrode for high-efficiently photoelectrocatalytic degradation of 2, 4-dichlorophenol. CHEMOSPHERE 2023; 313:137591. [PMID: 36563722 DOI: 10.1016/j.chemosphere.2022.137591] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/15/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Photoelectrocatalysis (PEC) has long been regarded as an efficient and green method to eliminate various organic pollutants from wastewater. However, the lack of highly photoelectrocatalytic active and stable electrodes limits the development of the PEC technologies. Herein, a novel hierarchical photo-electrode with hollow Cu1.8S/NH2-La MOFs decorated black titanium dioxide nanotubes (Cu1.8S/NH2-La MOFs/Black TNTs) was fabricated by a two-step water-heating method. The prepared photoelectrode was used to degradation of 2, 4-dichlorophenol (2, 4-DCP). Analysis of photoelectrocatalytic degradation process of 2, 4-DCP was evaluated using UV-Vis absorption spectroscopy and the main degradation paths were analyzed by LC-MS. The results showed that 99.3% of the pollutant could be rapidly degraded within 180 min. Furthermore, the Cu1.8S/NH2-La MOFs/Black TNTs photoelectric pole exhibited excellent stability after 15 cycling experiments.
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Affiliation(s)
- Wenkai Yu
- School of Chemistry and Material Engineering, Huainan Normal University, Huainan, 232038, People's Republic of China; School of Chemical Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, People's Republic of China
| | - Mai Xu
- School of Chemistry and Material Engineering, Huainan Normal University, Huainan, 232038, People's Republic of China.
| | - Xian Liang
- School of Chemistry and Material Engineering, Huainan Normal University, Huainan, 232038, People's Republic of China
| | - Jiayi Wang
- School of Chemistry and Material Engineering, Huainan Normal University, Huainan, 232038, People's Republic of China; School of Chemical Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, People's Republic of China
| | - Wenyan Fang
- School of Chemistry and Material Engineering, Huainan Normal University, Huainan, 232038, People's Republic of China
| | - Fengwu Wang
- School of Chemistry and Material Engineering, Huainan Normal University, Huainan, 232038, People's Republic of China.
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14
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Zhou J, Zhu B, Wang L, Bao Y, Guan G. Novel CdS/CeO2/g-C3N4 nanocomposite for efficient phenol photodegradation under visible light. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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15
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Duan Y, Liu Y, Wang Y, Wang H, Yin W, Xu G. Recyclable Fe/S co-doped nanocarbon derived from metal-organic framework as a peroxymonosulfate activator for efficient removal of 2,4-dichlorophenol. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:6906-6918. [PMID: 36018412 DOI: 10.1007/s11356-022-22430-0] [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: 05/09/2022] [Accepted: 08/03/2022] [Indexed: 06/15/2023]
Abstract
In this study, a recyclable Fe/S co-doped nanocarbon (Fe/S-NC) was successfully prepared by the pyrolysis of ZIF-8 confined with Fe(II) and added S. Characterization showed that a highly graphitized carbon-based material co-doped with sulfur and iron was successfully prepared. This Fe/S-NC can efficiently activate PMS to remove organic pollutants in water. The effect of different synthesis conditions on the degradation efficiency of 2,4-DCP was studied by orthogonal experiments. The optimized Fe/S-NC/PMS system exhibited excellent catalytic performance and could degrade more than 99.7% of 2,4-DCP within 30 min. Even after 5 cycles, the degradation efficiency could still be maintained above 96.3%, which proved that the catalytic system had good cycle performance. In addition, the effect of pH on catalytic performance showed that the degradation rate of 2,4-DCP exceeds 96.7% in the pH range of groundwater (pH = 5-9). We had confirmed that the free radicals that caused 2,4-DCP degradation were SO4·-, ·OH, O2·-, and 1O2, which played important roles in degrading organic pollutants. These research results show that the Fe/S-NC/PMS system can be used as an efficient, stable, and environmentally friendly system to treat organic pollutants in groundwater.
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Affiliation(s)
- Yu Duan
- School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
| | - Yujie Liu
- School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
| | - Yun Wang
- Shanghai Tenth People's Hospital, 301 Yanchang Road, Shanghai, 200072, China
| | - Hongyong Wang
- Shanghai Institute of Applied Radiation, Shanghai University, 20 Chengzhong Road, Shanghai, 200444, China
| | - Wentao Yin
- School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
| | - Gang Xu
- School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China.
- Key Laboratory of Organic Compound Pollution Control Engineering, Ministry of Education, Shanghai, 200444, People's Republic of China.
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16
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A facile pyrolysis synthesis of Ni doped Ce2O3@CeO2/CN composites for adsorption removal of Congo red: Activation of carbon nitride structure. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122505] [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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17
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Arumugam S, Singh V, Tathod AP, Daniel S, Viswanadham N. CeO 2–TiO 2 Nanoparticle-Grafted gC 3N 4 Sheets as an Efficient Catalyst for the Oxidation of Cyclohexane to KA oil. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c03899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Selvamani Arumugam
- Light Stock Processing Division, Council of Scientific and Industrial Research-Indian Institute of Petroleum, Dehradun248005, Uttarakhand, India
- Academy of Scientific and Innovative Research (AcSIR) at CSIR-Indian Institute of Petroleum, Dehradun248005, Uttarakhand, India
| | - Vijendra Singh
- Light Stock Processing Division, Council of Scientific and Industrial Research-Indian Institute of Petroleum, Dehradun248005, Uttarakhand, India
- Academy of Scientific and Innovative Research (AcSIR) at CSIR-Indian Institute of Petroleum, Dehradun248005, Uttarakhand, India
| | - Anup Prakash Tathod
- Light Stock Processing Division, Council of Scientific and Industrial Research-Indian Institute of Petroleum, Dehradun248005, Uttarakhand, India
- Academy of Scientific and Innovative Research (AcSIR) at CSIR-Indian Institute of Petroleum, Dehradun248005, Uttarakhand, India
| | - Santhanaraj Daniel
- Department of Chemistry, Loyola College, Chennai600 034, Tamilnadu, India
| | - Nagabhatla Viswanadham
- Light Stock Processing Division, Council of Scientific and Industrial Research-Indian Institute of Petroleum, Dehradun248005, Uttarakhand, India
- Academy of Scientific and Innovative Research (AcSIR) at CSIR-Indian Institute of Petroleum, Dehradun248005, Uttarakhand, India
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18
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Yi S, Zhou Y, Zhang J, Wang M, Zheng S, Yang X, Duan L, Reis RL, Dai F, Kundu SC, Xiao B. Flat Silk Cocoon-Based Dressing: Daylight-Driven Rechargeable Antibacterial Membranes Accelerate Infected Wound Healing. Adv Healthc Mater 2022; 11:e2201397. [PMID: 35996858 DOI: 10.1002/adhm.202201397] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 08/17/2022] [Indexed: 01/28/2023]
Abstract
One of the leading causes of death globally, especially in underdeveloped countries, is bacterial infection. Recently, the prevalence of infections from antibiotic-resistant bacteria has been increasing, which makes the need for innovative antibacterial wound dressings urgent. It is reported that g-C3 N4 -based flat silk cocoons (FSCs) with rechargeable antibacterial activity can efficiently generate reactive oxygen species (ROS) under daylight irradiation. The photoactive FSCs store the ROS and then release them in the dark. The engineered FSCs exhibit integrated properties of good biocompatibility, strong mechanical characteristics, robust photoactivity with photostorability, and excellent bactericidal efficiency (99.9% contact killing). In a rat model of infected wounds, the photoactive FSCs induce faster healing and reduce bacterial infections. The successful application of these FSC materials as wound dressings may provide a versatile platform for exploring the use of green photoactive antibacterial materials for accelerated wound healing and prevention of infections.
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Affiliation(s)
- Shixiong Yi
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass Sciences, Southwest University, Beibei, Chongqing, 400715, P. R. China
| | - Ying Zhou
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass Sciences, Southwest University, Beibei, Chongqing, 400715, P. R. China
| | - Jiamei Zhang
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass Sciences, Southwest University, Beibei, Chongqing, 400715, P. R. China
| | - Min Wang
- Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy, Southwest University, Beibei, Chongqing, 400715, P. R. China
| | - Shaohui Zheng
- Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy, Southwest University, Beibei, Chongqing, 400715, P. R. China
| | - Xiao Yang
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass Sciences, Southwest University, Beibei, Chongqing, 400715, P. R. China
| | - Lian Duan
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass Sciences, Southwest University, Beibei, Chongqing, 400715, P. R. China
| | - Rui L Reis
- 3Bs Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Barco, Guimaraes, 4805-017, Portugal
| | - Fangyin Dai
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass Sciences, Southwest University, Beibei, Chongqing, 400715, P. R. China
| | - Subhas C Kundu
- 3Bs Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Barco, Guimaraes, 4805-017, Portugal
| | - Bo Xiao
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile and Biomass Sciences, Southwest University, Beibei, Chongqing, 400715, P. R. China
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19
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Ning D, Li J, Lan Y, Sohn HY, Yang J, Chen C, Chu Z, Mao X. Molten salt synthesis of Z-scheme CeO2/C3N4 photocatalysts with excellent properties for removal of organic pollutants: Characterization, kinetics and mechanisms. J RARE EARTH 2022. [DOI: 10.1016/j.jre.2022.07.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Wu C, Zuo H, Zhang S, Zhao S, Du H, Yan Q. A novel strategy to construct a direct Z-Scheme Bi@Bi2O2CO3/g-C3N4 heterojunction catalyst via PDA electronic bridge. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121242] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Constructing benzene ring modified graphitic carbon nitride with narrowed bandgap and enhanced molecular oxygen activation for efficient photocatalytic degradation of oxytetracycline. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121170] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Zhu B, Jiang G, Kong C, Sun J, Liu F, Wang Y, Zhao C, Liu C. Photocatalytic degradation of organic pollutants in water by N-doping ZnS with Zn vacancy: enhancement mechanism of visible light response and electron flow promotion. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:58716-58729. [PMID: 35366728 DOI: 10.1007/s11356-022-19852-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 03/18/2022] [Indexed: 06/14/2023]
Abstract
In order to improve the visible light response, N-doping ZnS (N-ZnS) nanospheres with Zn vacancy and porous surface were prepared by a simple one-pot hydrothermal method. Characterizations and density functional theory simulations showed excellent visible light response of N-ZnS. N-doping introduced impurity energy levels, which led to orbital hybridization and changed the original dipole moment. The presence of ortho Zn vacancy (O-Znv) can effectively reduce e--h+ recombination and photocorrosion. Furthermore, O-Znv caused lattice distortion (twisted the -S-Zn-N-(O-Znv)-S-Zn-S- chemical bond chain), resulting in "vacancy effect" to accelerate e- flow. Under visible light, the photocatalytic degradation efficiency of tetracycline (TC) and 2,4-dichlorophenol (2,4-DCP) was 90.31% and 60.84%, respectively. TOC degradation efficiency was 31.4% and 25.6%, respectively. Combined with Fukui index and LC-MS methods, it was found that TC and 2,4-DCP were degraded under the constant attack of active substances such as ·OH. This work can provide a reference for the application of catalytic materials in the field of visible light photocatalysis.
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Affiliation(s)
- Benjie Zhu
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, China
| | - Guofei Jiang
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, China
| | - Can Kong
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, China
| | - Junzhi Sun
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, China
| | - Fang Liu
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, China.
- State Key Laboratory of Pollution Control and Treatment in Petroleum and Petrochemical Industry, State Key Laboratory of Heavy Oil Processing, Beijing, China.
| | - Yongqiang Wang
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, China
- State Key Laboratory of Pollution Control and Treatment in Petroleum and Petrochemical Industry, State Key Laboratory of Heavy Oil Processing, Beijing, China
| | - Chaocheng Zhao
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, China
- State Key Laboratory of Pollution Control and Treatment in Petroleum and Petrochemical Industry, State Key Laboratory of Heavy Oil Processing, Beijing, China
| | - Chunshuang Liu
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, China
- State Key Laboratory of Pollution Control and Treatment in Petroleum and Petrochemical Industry, State Key Laboratory of Heavy Oil Processing, Beijing, China
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23
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Humayun M, Shu L, Pi W, Xia H, Khan A, Zheng Z, Fu Q, Tian Y, Luo W. Vertically grown CeO 2 and TiO 2 nanoparticles over the MIL53Fe MOF as proper band alignments for efficient H 2 generation and 2,4-DCP degradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:34861-34873. [PMID: 35041166 DOI: 10.1007/s11356-022-18684-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 01/11/2022] [Indexed: 06/14/2023]
Abstract
The design of highly efficient photoca talysts for clean energy production and environmental remediation are the grand challenges of scientific research. Herein, TiO2@MIL53Fe and CeO2@MIL53Fe composite photocatalysts are synthesized via solvothermal technique. The SEM and TEM micrographs reveal that TiO2 and CeO2 nanoparticles are vertically grown onto the surface of MIL53Fe MOF. Further, HRTEM micrograph confirmed the formation of heterojunction. It has been investigated that the resultant TiO2@MIL53Fe and CeO2@MIL53Fe photocatalysts exhibit remarkably improved visible light activities for H2 production and 2,4-dichlorophenol (2,4-DCP) degradation in comparison to the bare MIL53Fe photocatalyst. The enhanced photoactivities of the fabricated TiO2@MIL53Fe and CeO2@MIL53Fe photocatalysts are attributed to significantly promoted charge separation as confirmed via the surface photo voltage (SPV) and photoluminescence (PL) results. Further, the photocatalysts exhibit high stability and reusability as confirmed via the recyclable tests. This work will promote the design of MOF-based efficient photocatalysts for clean energy production and environment purification.
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Affiliation(s)
- Muhammad Humayun
- Engineering Research Center for Functional Ceramics of the Ministry of Education, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
| | - Lang Shu
- Engineering Research Center for Functional Ceramics of the Ministry of Education, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
| | - Wenbo Pi
- Engineering Research Center for Functional Ceramics of the Ministry of Education, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
| | - Hui Xia
- Institute of Electrical Engineering, Chinese Academy of Sciences, No. 6 Beiertiao, Zhongguancun, Beijing, 100190, China.
| | - Abbas Khan
- Department of Chemistry, Abdul Wali Khan University Mardan, Mardan, KP, 23200, Pakistan
| | - Zhiping Zheng
- Engineering Research Center for Functional Ceramics of the Ministry of Education, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
| | - Qiuyun Fu
- Engineering Research Center for Functional Ceramics of the Ministry of Education, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
| | - Yahui Tian
- Institute of Acoustics, Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Wei Luo
- Engineering Research Center for Functional Ceramics of the Ministry of Education, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China.
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China.
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24
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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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25
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Bhatt P, Pandey SC, Joshi S, Chaudhary P, Pathak VM, Huang Y, Wu X, Zhou Z, Chen S. Nanobioremediation: A sustainable approach for the removal of toxic pollutants from the environment. JOURNAL OF HAZARDOUS MATERIALS 2022; 427:128033. [PMID: 34999406 DOI: 10.1016/j.jhazmat.2021.128033] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 11/29/2021] [Accepted: 12/06/2021] [Indexed: 06/14/2023]
Abstract
In recent years, the proportion of organic and inorganic contaminants has increased rapidly due to growing human interference and represents a threat to ecosystems. The removal of these toxic pollutants from the environment is a difficult task. Physical, chemical and biological methods are implemented for the degradation of toxic pollutants from the environment. Among existing technologies, bioremediation in combination with nanotechnology is the most promising and cost-effective method for the removal of pollutants. Numerous studies have shown that exceptional characteristics of nanomaterials such as improved catalysis and adsorption properties as well as high reactivity have been subjects of great interest. There is an emerging trend of employing bacterial, fungal and algal cultures and their components, extracts or biomolecules as catalysts for the sustainable production of nanomaterials. They can serve as facilitators in the bioremediation of toxic compounds by immobilizing or inducing the synthesis of remediating microbial enzymes. Understanding the association between microorganisms, contaminants and nanoparticles (NPs) is of crucial importance. In this review, we focus on the removal of toxic pollutants using the cumulative effects of nanoparticles with microbial technology and their applications in different domains. Besides, we discuss how this novel nanobioremediation technique is significant and contributes towards sustainability.
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Affiliation(s)
- Pankaj Bhatt
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Satish Chandra Pandey
- Cell and Molecular Biology Laboratory, Department of Zoology, Soban Singh Jeena University, Almora, Uttarakhand, India
| | - Samiksha Joshi
- School of Agriculture Graphic Era Hill University Bhimtal, 263136, India
| | - Parul Chaudhary
- Department of Microbiology, College of Basic Sciences and Humanities, G.B Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, India
| | - Vinay Mohan Pathak
- Department of Microbiology, University of Delhi, South Campus, 110021, India; Department of Botany & Microbiology, Gurukula Kangri (Deemed to be University), Haridwar, Uttarakhand 249404, India
| | - Yaohua Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Xiaozhen Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Zhe Zhou
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Shaohua Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China.
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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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27
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Li Y, Li Y, Lv J, Zhao Z, Sun G. Novel Ternary CuO–CeO2/g-C3N4 Heterogeneous Catalyst for Removing Methyl Orange Dye via Photo-Assisted Fenton-like Reaction. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2022. [DOI: 10.1134/s0036024422030281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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28
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Wang Z, Miao R, He L, Guan Q, Shi Y. Green synthesis of MIL-100(Fe) derivatives and revealing their structure-activity relationship for 2,4-dichlorophenol photodegradation. CHEMOSPHERE 2022; 291:132950. [PMID: 34801575 DOI: 10.1016/j.chemosphere.2021.132950] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 10/16/2021] [Accepted: 11/15/2021] [Indexed: 06/13/2023]
Abstract
MIL-100(Fe), a kind of iron-based metal-organic framework materials (MOFs), can be synthesized at room temperature or hydrothermal conditions, which are promising precursor materials for preparing photocatalysts to degrade some recalcitrant chlorophenols in industrial wastewater. However, the relationship between the structural characterization of MIL-100(Fe) derivatives and their photodegradation behavior of chlorophenol pollutants is still unclear. Thus, in this work, a porous Z-scheme α-Fe2O3/MIL-100(Fe) composite was successfully fabricated via partial-pyrolysis of MIL-100(Fe) precursor synthesized through green synthesis route, which was further used for degrading high-concentration of 2,4-dichlorophenol under visible-light illumination (λ > 420 nm). The effects of synthesis route and pyrolysis temperature of MIL-100(Fe) on the degradation efficiencies of as-derived materials for 2,4-dichlorophenol were investigated. The structure-activity relationship was illuminated in detail. Otherwise, the influence of several process factors, i.e., initial concentration and pH of the 2,4-dichlorophenol solution, catalyst dosage on the degradation efficiency of 2,4-dichlorophenol has also been performed. The removal efficiency of 2,4-dichlorophenol with the initial concentration of 100 mg L-1 reached up to 87.65% under optimized conditions. Lastly, the possible mechanism was explored based on trapping experiments and some other characterization results. The study in this paper not only exhibited new insight into the modified α-Fe2O3 material with high photocatalytic activity but also provided a promising method for treating wastewater containing 2,4-dichlorophenol or other similar organic pollutants.
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Affiliation(s)
- Zhijuan Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, 650500, Kunming, China; Faculty of Chemical Engineering and Technology, Xinjiang University, 830046, Urumqi, China; College of Chemistry and Environmental Science, Qujing Normal University, 655011, Qujing, China
| | - Rongrong Miao
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, 650500, Kunming, China
| | - Liang He
- Faculty of Chemical Engineering, Kunming University of Science and Technology, 650500, Kunming, China.
| | - Qingqing Guan
- Faculty of Chemical Engineering and Technology, Xinjiang University, 830046, Urumqi, China.
| | - Yuzhen Shi
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, 650500, Kunming, China
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29
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Chen Z, Yao J, Ma B, Liu B, Kim J, Li H, Zhu X, Zhao C, Amde M. A robust biocatalyst based on laccase immobilized superparamagnetic Fe 3O 4@SiO 2-NH 2 nanoparticles and its application for degradation of chlorophenols. CHEMOSPHERE 2022; 291:132727. [PMID: 34743799 DOI: 10.1016/j.chemosphere.2021.132727] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 10/23/2021] [Accepted: 10/26/2021] [Indexed: 06/13/2023]
Abstract
The presence of chlorophenols in water and wastewater is considered a serious environmental issue. To eliminate these micropollutants, biodegradation of chlorophenols using enzyme-nanoparticle conjugated biocatalyst, is proposed as an economical and eco-friendly method. Herein, amino-functionalized superparamagnetic Fe3O4@SiO2-NH2 nanoparticles with core-shell structure were constructed as a promising carrier for immobilization of laccase from Trametes versicolor. Compared with free laccase, Fe3O4@SiO2-NH2-Laccase displayed remarkable outcomes in all major areas such as temperature and storage stabilities, and tolerance to organic solvents and metal ions. The biocatalytic performance and reusability of Fe3O4@SiO2-NH2-Laccase were evaluated for the degradation of 2,4-dichlorophenol (2,4-DCP) and 2,4,6-trichlorophenol (2,4,6-TCP) in repeated cycles. Even after 10 successive reuses, the degradation rate of 2,4-DCP and 2,4,6-TCP were found to be 54.9% and 68.7%, respectively. The influences of solution pH, initial chlorophenol concentration, and temperature on the degradation rate of these two chlorophenols were evaluated. The degradation intermediate products including dimers, trimers, and tetramers of 2,4-DCP and 2,4,6-TCP were identified. Release of chloride ions was observed during the enzymatic degradation of these two chlorophenols. Based on the determination of intermediate products and released chloride ions, the degradation pathway that was involved in dehydrogenation, reactive radical intermediates formation, dechlorination, self-coupling and oligomers/polymers formation was proposed. The toxicity of these two chlorophenols and their intermediates was substantially reduced during the enzymatic degradation. The results of this study might present an alternative clean biotechnology for the remediation of 2,4-DCP and 2,4,6-TCP contaminated water matrices.
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Affiliation(s)
- Zhihui Chen
- School of Water Resources and Environment, China University of Geosciences (Beijing), 29 Xueyuan Road, Haidian District, 100083, Beijing, China
| | - Jun Yao
- School of Water Resources and Environment, China University of Geosciences (Beijing), 29 Xueyuan Road, Haidian District, 100083, Beijing, China.
| | - Bo Ma
- School of Water Resources and Environment, China University of Geosciences (Beijing), 29 Xueyuan Road, Haidian District, 100083, Beijing, China
| | - Bang Liu
- School of Water Resources and Environment, China University of Geosciences (Beijing), 29 Xueyuan Road, Haidian District, 100083, Beijing, China
| | - Jonghyok Kim
- School of Water Resources and Environment, China University of Geosciences (Beijing), 29 Xueyuan Road, Haidian District, 100083, Beijing, China
| | - Hao Li
- School of Water Resources and Environment, China University of Geosciences (Beijing), 29 Xueyuan Road, Haidian District, 100083, Beijing, China
| | - Xiaozhe Zhu
- School of Water Resources and Environment, China University of Geosciences (Beijing), 29 Xueyuan Road, Haidian District, 100083, Beijing, China
| | - Chenchen Zhao
- School of Water Resources and Environment, China University of Geosciences (Beijing), 29 Xueyuan Road, Haidian District, 100083, Beijing, China
| | - Meseret Amde
- School of Water Resources and Environment, China University of Geosciences (Beijing), 29 Xueyuan Road, Haidian District, 100083, Beijing, China; Department of Chemistry, College of Natural and Computational Sciences, Haramaya University, Oromia, Ethiopia
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30
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Humayun M, Wang C, Luo W. Recent Progress in the Synthesis and Applications of Composite Photocatalysts: A Critical Review. SMALL METHODS 2022; 6:e2101395. [PMID: 35174987 DOI: 10.1002/smtd.202101395] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Indexed: 06/14/2023]
Abstract
Photocatalysis is an advanced technique that transforms solar energy into sustainable fuels and oxidizes pollutants via the aid of semiconductor photocatalysts. The main scientific and technological challenges for effective photocatalysis are the stability, robustness, and efficiency of semiconductor photocatalysts. For practical applications, researchers are trying to develop highly efficient and stable photocatalysts. Since the literature is highly scattered, it is urgent to write a critical review that summarizes the state-of-the-art progress in the design of a variety of semiconductor composite photocatalysts for energy and environmental applications. Herein, a comprehensive review is presented that summarizes an overview, history, mechanism, advantages, and challenges of semiconductor photocatalysis. Further, the recent advancements in the design of heterostructure photocatalysts including alloy quantum dots based composites, carbon based composites including carbon nanotubes, carbon quantum dots, graphitic carbon nitride, and graphene, covalent-organic frameworks based composites, metal based composites including metal carbides, metal halide perovskites, metal nitrides, metal oxides, metal phosphides, and metal sulfides, metal-organic frameworks based composites, plasmonic materials based composites and single atom based composites for CO2 conversion, H2 evolution, and pollutants oxidation are discussed elaborately. Finally, perspectives for further improvement in the design of composite materials for efficient photocatalysis are provided.
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Affiliation(s)
- Muhammad Humayun
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Engineering Research Center for Functional Ceramics of the Ministry of Education, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Chundong Wang
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Engineering Research Center for Functional Ceramics of the Ministry of Education, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Wei Luo
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Engineering Research Center for Functional Ceramics of the Ministry of Education, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
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31
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Zheng F, Dong F, Zhou L, Yu J, Luo X, Zhang X, Lv Z, Jiang L, Chen Y, Liu M. Cerium and carbon-sulfur codoped mesoporous TiO2 nanocomposites for boosting visible light photocatalytic activity. J RARE EARTH 2022. [DOI: 10.1016/j.jre.2022.02.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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32
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Lei H, He Q, Wu M, Xu Y, Sun P, Dong X. Piezoelectric polarization promoted spatial separation of photoexcited electrons and holes in two-dimensional g-C 3N 4 nanosheets for efficient elimination of chlorophenols. JOURNAL OF HAZARDOUS MATERIALS 2022; 421:126696. [PMID: 34332490 DOI: 10.1016/j.jhazmat.2021.126696] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/23/2021] [Accepted: 07/18/2021] [Indexed: 06/13/2023]
Abstract
Graphitic carbon nitride (g-C3N4) has been proved to be a potential photocatalyst for environment purification, but the high recombination rate of photogenerated carriers leads to the low photocatalytic efficiency. Herein, we report the enhanced degradation of chlorophenols by 2D ultrathin g-C3N4 nanosheets with intrinsic piezoelectricity through photopiezocatalysis strategy. Under the simultaneous visible-light irradiation and ultrasonic vibration, the 2D g-C3N4 presented improved removal efficiency for elimination of 2,4-dichlorophenol (2,4-DCP) with an apparent rate constant of 6.65 × 10-2 min-1, which was 6.7 and 2.2 times of the photocatalysis and piezocatalysis, respectively. The improved removal efficiency was attributed to the sufficient separation of free charges driven by the ultrasound-induced piezoelectric field in the 2D g-C3N4, which was demonstrated by the enhanced current response under photopiezocatalysis mode. Additionally, the photopiezocatalysis of 2D g-C3N4 was proved to possess well universality for removing different chlorophenols, as well as high durability and dechlorination efficiency. Finally, a possible photopiezocatalytic mechanism for removal of 2,4-DCP was proposed based on the electron paramagnetic resonance (EPR) technique and the determination of intermediates through liquid chromatography-mass spectrometry (LC-MS) analysis. This work provides a promising strategy for the design of energy-conversion materials towards capturing solar and mechanical energy in ambient environment.
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Affiliation(s)
- Hua Lei
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Qingshen He
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Meixuan Wu
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yingying Xu
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Pengfei Sun
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Xiaoping Dong
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China.
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33
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Fauzi AA, Jalil AA, Hassan NS, Aziz FFA, Azami MS, Hussain I, Saravanan R, Vo DVN. A critical review on relationship of CeO 2-based photocatalyst towards mechanistic degradation of organic pollutant. CHEMOSPHERE 2022; 286:131651. [PMID: 34346345 DOI: 10.1016/j.chemosphere.2021.131651] [Citation(s) in RCA: 54] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 05/21/2021] [Accepted: 07/21/2021] [Indexed: 06/13/2023]
Abstract
Nanostructured photocatalysts commonly offered opportunities to solve issues scrutinized with the environmental challenges caused by steep population growth and rapid urbanization. This photocatalyst is a controllable characteristic, which can provide humans with a clean and sustainable ecosystem. Over the last decades, one of the current thriving research focuses on visible-light-driven CeO2-based photocatalysts due to their superior characteristics, including unique fluorite-type structure, rigid framework, and facile reducing oxidizing properties of cerium's tetravalent (Ce4+) and trivalent (Ce3+) valence states. Notwithstanding, owing to its inherent wide energy gap, the solar energy utilization efficiency is low, which limits its application in wastewater treatment. Numerous modifications of CeO2 have been employed to enhance photodegradation performances, such as metals and non-metals doping, adding support materials, and coupling with another semiconductor. Besides, all these doping will form a different heterojunction and show a different way of electron-hole migration. Compared to conventional heterojunction, advanced heterojunction types such as p-n heterojunction, Z-scheme, Schottky junction, and surface plasmon resonance effect exhibit superior performance for degradation owing to their excellent charge carrier separation, and the reaction occurs at a relatively higher redox potential. This review attends to providing deep insights on heterojunction mechanisms and the latest progress on photodegradation of various contaminants in wastewater using CeO2-based photocatalysts. Hence, making the CeO2 photocatalyst more foresee and promising to further development and research.
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Affiliation(s)
- A A Fauzi
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, UTM Johor Bahru, 81310, Johor, Malaysia
| | - A A Jalil
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, UTM Johor Bahru, 81310, Johor, Malaysia; Centre of Hydrogen Energy, Institute of Future Energy, UTM Johor Bahru, 81310, Johor, Malaysia.
| | - N S Hassan
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, UTM Johor Bahru, 81310, Johor, Malaysia
| | - F F A Aziz
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, UTM Johor Bahru, 81310, Johor, Malaysia
| | - M S Azami
- Faculty of Science, Universiti Teknologi Malaysia, UTM Johor Bahru, 81310, Malaysia
| | - I Hussain
- Faculty of Science, Universiti Teknologi Malaysia, UTM Johor Bahru, 81310, Malaysia
| | - R Saravanan
- Faculty of Engineering, Department of Mechanical Engineering, University of Tarapacá, Avda, General Velasquez, 1775 Arica, Chile
| | - D-V N Vo
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN), Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Viet Nam
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34
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Zhang Z, Niu M, Li W, Ding C, Xie P, Li Y, Chen L, Lan X, Liu C, Yan X, Fu X, Liu Y, Liu Y, Cao D, Dai J, Hong X, Liu C. Steered polymorphic nanodomains in TiO 2 to boost visible-light photocatalytic oxidation. RSC Adv 2022; 12:9660-9670. [PMID: 35424931 PMCID: PMC8959444 DOI: 10.1039/d2ra00782g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Accepted: 03/18/2022] [Indexed: 11/21/2022] Open
Abstract
A breakthrough in enhancing visible-light photocatalysis of wide-bandgap semiconductors such as prototypical titania (TiO2) via cocatalyst decoration is still challenged by insufficient heterojunctions and inevitable interfacial transport issues. Herein, we report a novel TiO2-based composite material composed of in situ generated polymorphic nanodomains including carbon nitride (C3N4) and (001)/(101)-faceted anatase nanocrystals. The introduction of ultrafine C3N4 results in the generation of many oxygen vacancies in the TiO2 lattice, and simultaneously induces the exposure and growth of anatase TiO2(001) facets with high surface energy. The photocatalytic performance of C3N4-induced TiO2 for degradation of 2,4-dichlorophenol under visible-light irradiation was tested, its apparent rate being up to 1.49 × 10−2 min−1, almost 3.8 times as high as that for the pure TiO2 nanofibers. More significantly, even under low operation temperature and after a long-term photocatalytic process, the composite still exhibits exceptional degradation efficiency and stability. The normalized degradation efficiency and effective lifespan of the composite photocatalyst are far superior to other reported modified photocatalysts. A novel TiO2-based composite material composed of in situ generated biomimetic polymorphic nanodomains including carbon nitride (C3N4) and (001)-/(101)-faceted anatase nanocrystals is reported.![]()
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Affiliation(s)
- Zeju Zhang
- State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, The Affiliated Qingdao Central Hospital of Qingdao University, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Mang Niu
- State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, The Affiliated Qingdao Central Hospital of Qingdao University, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Wei Li
- State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, The Affiliated Qingdao Central Hospital of Qingdao University, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Chenfeng Ding
- Energy Materials and Surface Sciences Unit (EMSSU), Okinawa Institute of Science and Technology Graduate University (OIST), 1919-1 Tancha Kunigami-gun, Onna-son, Okinawa 904-0495, Japan
- Foshan (Southern China) Institute for New Materials, Foshan 528200, China
| | - Peitao Xie
- State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, The Affiliated Qingdao Central Hospital of Qingdao University, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Yongxin Li
- State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, The Affiliated Qingdao Central Hospital of Qingdao University, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Lili Chen
- State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, The Affiliated Qingdao Central Hospital of Qingdao University, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Xiaopeng Lan
- State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, The Affiliated Qingdao Central Hospital of Qingdao University, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Chunlei Liu
- State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, The Affiliated Qingdao Central Hospital of Qingdao University, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Xiaodong Yan
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Xuewei Fu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Yaochun Liu
- Foshan (Southern China) Institute for New Materials, Foshan 528200, China
| | - Yuan Liu
- State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, The Affiliated Qingdao Central Hospital of Qingdao University, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
- Foshan (Southern China) Institute for New Materials, Foshan 528200, China
| | - Dapeng Cao
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jingjie Dai
- School of Mechanical and Electronic Engineering, Qingdao Binhai University, Qingdao 266555, Shandong, China
| | - Xiaofen Hong
- Zhejiang Rich Environmental Protection Technology Co., Ltd, Hangzhou 310000, China
| | - Chunzhao Liu
- State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, The Affiliated Qingdao Central Hospital of Qingdao University, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
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Wang C, Dang Y, Pang X, Zhang L, Bian Y, Duan W, Yang C, Zhen Y, Fu F. A novel S-scheme heterojunction based on 0D/3D CeO2/Bi2O2CO3 for photocatalytic degradation of organic pollutants. NEW J CHEM 2022. [DOI: 10.1039/d2nj03192b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A distinct S-scheme heterojunction of 0D/3D CeO2/Bi2O2CO3 photocatalyst was successfully synthesized via hydrothermal method employing for photocatalytic degradation of methylene blue (MB), tetracycline (TC) and aureomycin (AM). Compared with bare...
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36
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Engineering surface oxygen vacancy of mesoporous CeO2 nanosheets assembled microspheres for boosting solar-driven photocatalytic performance. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.06.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Xia L, Kong L, Tan J, Wang Y, Jin S, Wang C. Advanced photocatalytic performance of PVP-modified BiOBr materials for the removal of 2,4-DCP and mechanism insight. Catal Sci Technol 2022. [DOI: 10.1039/d2cy01406h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The BiOBr material is induced by PVP at room temperature to form an efficient visible light catalyst for removing non-dye organic pollutants from wastewater.
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Affiliation(s)
- Lianghai Xia
- Department of Environmental Science & Engineering, Jiangwan Campus, Fudan University, No. 2205 Songhu Road, Shanghai, 200438, China
| | - Lingdong Kong
- Department of Environmental Science & Engineering, Jiangwan Campus, Fudan University, No. 2205 Songhu Road, Shanghai, 200438, China
| | - Jie Tan
- Department of Environmental Science & Engineering, Jiangwan Campus, Fudan University, No. 2205 Songhu Road, Shanghai, 200438, China
| | - Yuwen Wang
- Department of Environmental Science & Engineering, Jiangwan Campus, Fudan University, No. 2205 Songhu Road, Shanghai, 200438, China
| | - Shengyan Jin
- Department of Environmental Science & Engineering, Jiangwan Campus, Fudan University, No. 2205 Songhu Road, Shanghai, 200438, China
| | - Chao Wang
- Department of Environmental Science & Engineering, Jiangwan Campus, Fudan University, No. 2205 Songhu Road, Shanghai, 200438, China
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Liu T, Cui K, Chen Y, Li C, Cui M, Yao H, Chen Y, Wang S. Removal of chlorophenols in the aquatic environment by activation of peroxymonosulfate with nMnOx@Biochar hybrid composites: Performance and mechanism. CHEMOSPHERE 2021; 283:131188. [PMID: 34153906 DOI: 10.1016/j.chemosphere.2021.131188] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/24/2021] [Accepted: 06/06/2021] [Indexed: 06/13/2023]
Abstract
Functional nMnOx@RBC composites were synthesized via a simple co-precipitation method. The nanomaterials have efficient activity in activating peroxymonosulfate (PMS) for removal of chlorophenols (CPs). Rice husk biochar (RBC) could support nMnOx, and acted as an electron shuttle to mediate electron transfer reaction. nMnOx@RBC had superior catalytic and adsorption properties and exhibited remarkable synergistic effects. This led to complete degradation of 4-chloro-3-methyl phenol (CMP) in 60 min at the natural pH (7.0). Reactive oxygen species (ROS) were also identified via the corresponding scavengers. The results indicated that singlet oxygen (1O2) played a dominant role in the degradation of CMP within nMnOx@RBC system. Moreover, the mechanism of CMP decomposition was rationally proposed, and possible intermediate products were deduced. The high degradation performances of diverse CPs were also observed in nMnOx@RBC/PMS system. This research aims to offer novel insights into carbon-metal nanomaterials for the elimination of emerging pollutants.
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Affiliation(s)
- Tong Liu
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, PR China; Key Laboratory of Nanominerals and Pollution Control of Higher Education Institutes, Hefei University of Technology, Hefei, 230009, PR China
| | - Kangping Cui
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, PR China; Key Laboratory of Nanominerals and Pollution Control of Higher Education Institutes, Hefei University of Technology, Hefei, 230009, PR China.
| | - Yihan Chen
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, PR China; Key Laboratory of Nanominerals and Pollution Control of Higher Education Institutes, Hefei University of Technology, Hefei, 230009, PR China
| | - Chenxuan Li
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, PR China; Key Laboratory of Nanominerals and Pollution Control of Higher Education Institutes, Hefei University of Technology, Hefei, 230009, PR China
| | - Minshu Cui
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, PR China; Key Laboratory of Nanominerals and Pollution Control of Higher Education Institutes, Hefei University of Technology, Hefei, 230009, PR China
| | - Hongjia Yao
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, PR China; Key Laboratory of Nanominerals and Pollution Control of Higher Education Institutes, Hefei University of Technology, Hefei, 230009, PR China
| | - Yawen Chen
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, PR China; Key Laboratory of Nanominerals and Pollution Control of Higher Education Institutes, Hefei University of Technology, Hefei, 230009, PR China
| | - Shanpeng Wang
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, PR China; Key Laboratory of Nanominerals and Pollution Control of Higher Education Institutes, Hefei University of Technology, Hefei, 230009, PR China
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Humayun M, Ullah H, Shu L, Ao X, Tahir AA, Wang C, Luo W. Plasmon Assisted Highly Efficient Visible Light Catalytic CO 2 Reduction Over the Noble Metal Decorated Sr-Incorporated g-C 3N 4. NANO-MICRO LETTERS 2021; 13:209. [PMID: 34652501 PMCID: PMC8521553 DOI: 10.1007/s40820-021-00736-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 09/15/2021] [Indexed: 05/20/2023]
Abstract
The photocatalytic performance of g-C3N4 for CO2 conversion is still inadequate by several shortfalls including the instability, insufficient solar light absorption and rapid charge carrier's recombination rate. To solve these problems, herein, noble metals (Pt and Au) decorated Sr-incorporated g-C3N4 photocatalysts are fabricated via the simple calcination and photo-deposition methods. The Sr-incorporation remarkably reduced the g-C3N4 band gap from 2.7 to 2.54 eV, as evidenced by the UV-visible absorption spectra and the density functional theory results. The CO2 conversion performance of the catalysts was evaluated under visible light irradiation. The Pt/0.15Sr-CN sample produced 48.55 and 74.54 µmol h-1 g-1 of CH4 and CO, respectively. These amounts are far greater than that produced by the Au/0.15Sr-CN, 0.15Sr-CN, and CN samples. A high quantum efficiency of 2.92% is predicted for the Pt/0.15Sr-CN sample. Further, the stability of the photocatalyst is confirmed via the photocatalytic recyclable test. The improved CO2 conversion performance of the catalyst is accredited to the promoted light absorption and remarkably enhanced charge separation via the Sr-incorporated mid gap states and the localized surface plasmon resonance effect induced by noble metal nanoparticles. This work will provide a new approach for promoting the catalytic efficiency of g-C3N4 for efficient solar fuel production.
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Affiliation(s)
- Muhammad Humayun
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Engineering Research Center for Functional Ceramics of the Ministry of Education, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
| | - Habib Ullah
- Environment and Sustainability Institute, University of Exeter, Cornwall, Penryn, TR10 9FE, UK
| | - Lang Shu
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Engineering Research Center for Functional Ceramics of the Ministry of Education, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
| | - Xiang Ao
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Engineering Research Center for Functional Ceramics of the Ministry of Education, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
| | - Asif Ali Tahir
- Environment and Sustainability Institute, University of Exeter, Cornwall, Penryn, TR10 9FE, UK
| | - Chungdong Wang
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Engineering Research Center for Functional Ceramics of the Ministry of Education, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China.
| | - Wei Luo
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Engineering Research Center for Functional Ceramics of the Ministry of Education, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China.
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Enhanced visible-light-driven photocatalytic degradation of acetaminophen over CeO2/I, K-codoped C3N4 heterojunction with tunable properties in simulated water matrix. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117567] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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41
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A Comparative Study of Cerium- and Ytterbium-Based GO/g-C3N4/Fe2O3 Composites for Electrochemical and Photocatalytic Applications. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11199000] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The design of sustainable and efficient materials for efficient energy storage and degradation of environmental pollutants (specifically organic dyes) is a matter of major interest these days. For this purpose, cerium- and ytterbium-based GO/g-C3N4/Fe2O3 composites have been synthesized to explore their properties, especially in charge storage devices such as supercapacitors, and also as photocatalysts for the degradation of carcinogenic dyes from the environment. Physicochemical studies have been carried out using XRD, FTIR, SEM, and BET techniques. Electrochemical techniques (cyclic voltammetry, galvanic charge discharge, and electrochemical impedance spectroscopy) have been employed to measure super-capacitance and EDLC properties. Results show that the gravimetric capacitance calculated from GCD results is 219 Fg−1 for ytterbium- and 169 Fg−1 for cerium-based nanocomposites at the current density of 1 A/g and scan rate of 2 mV/sec. The specific capacitance calculated for the ytterbium-based nanocomposite is 189 Fg−1 as compared to 125 Fg−1 for the cerium-based material. EIS results pointed to an enhanced resistance offered by cerium-based nanocomposites as compared to that of ytterbium, which can be assumed with the difference in particle size, as confirmed from structural studies including XRD. From obtained results, ytterbium oxide-based GO/g-C3N4/Fe2O3 is proven to be a better electro-catalyst as compared to cerium-based nanocomposites. Photocatalytic results are also in agreement with electrochemical results, as the degradation efficiency of ytterbium oxide-based GO/g-C3N4/Fe2O3 (67.11 and 83.50% for rhodamine B and methylene blue dyes) surpasses values observed for cerium-based GO/g-C3N4/Fe2O3 (63.08 and 70.61%).
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Samarghandi MR, Dargahi A, Rahmani A, Shabanloo A, Ansari A, Nematollahi D. Application of a fluidized three-dimensional electrochemical reactor with Ti/SnO 2-Sb/β-PbO 2 anode and granular activated carbon particles for degradation and mineralization of 2,4-dichlorophenol: Process optimization and degradation pathway. CHEMOSPHERE 2021; 279:130640. [PMID: 34134425 DOI: 10.1016/j.chemosphere.2021.130640] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 04/12/2021] [Accepted: 04/16/2021] [Indexed: 06/12/2023]
Abstract
A three-dimensional electrochemical reactor with Ti/SnO2-Sb/β-PbO2 anode and granular activated carbon (3DER-GAC) particle electrodes were used for degradation of 2,4-dichlorophenol (2,4-DCP). Process modeling and optimization were performed using an orthogonal central composite design (OCCD) and genetic algorithm (GA), respectively. Ti/SnO2-Sb/β-PbO2 anode was prepared by electrochemical deposition method and then its properties were studied by FESEM, EDX, XRD, Linear sweep voltammetry and accelerated lifetime test techniques. The results showed that lead oxide was precipitated as highly compact pyramidal clusters in the form of β-PbO2 on the electrode surface. In addition, the prepared anode had high stability (170 h) and oxygen evolution potential (2.32 V). A robust quadratic model (p-value < 0.0001 and R2 > 0.99) was developed to predict the 2,4-DCP removal efficiency in the 3DER-GAC system. Under optimal conditions (pH = 4.98, Na2SO4 concentration = 0.07 M, current density = 35 mA cm-2, GAC amount = 25 g and reaction time = 50 min), the removal efficiency of 2,4-DCP in the 3DER-GAC system and the separate electrochemical degradation process (without GAC particle electrode) were 99.8 and 71%, respectively. At a reaction time of 80 min, the TOC removal efficiencies in the 3DER-GAC and the separate electrochemical degradation system were 100 and 57.5%, respectively. Accordingly, the energy consumed in these two systems was calculated to be 0.81 and 1.57 kWh g-1 TOC, respectively. Based on the results of LC-MS analysis, possible degradation pathways of 2,4-DCP were proposed. Trimerization and ring opening reactions were the two dominant mechanisms in 2,4-DCP degradation.
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Affiliation(s)
- Mohammad Reza Samarghandi
- Department of Environmental Health Engineering, Faculty of Health and Research Center for Health Sciences, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Abdollah Dargahi
- Social Determinants of Health Research Center, Ardabil University of Medical Sciences, Ardabil, Iran.
| | - Alireza Rahmani
- Department of Environmental Health Engineering, Faculty of Health and Research Center for Health Sciences, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Amir Shabanloo
- Department of Environmental Health Engineering, Hamadan University of Medical Sciences, Hamadan, Iran.
| | - Amin Ansari
- Faculty of Chemistry, Bu-Ali-Sina University, Hamadan, Iran
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Naik PJ, An Y, Sedinkin SL, Masching H, Freppon D, Smith EA, Venditti V, Slowing II. Non-Innocent Role of the Ceria Support in Pd-Catalyzed Halophenol Hydrodehalogenation. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02716] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Pranjali J. Naik
- U.S. Department of Energy Ames Laboratory, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Yeongseo An
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Sergey L. Sedinkin
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Hayley Masching
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Daniel Freppon
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Emily A. Smith
- U.S. Department of Energy Ames Laboratory, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Vincenzo Venditti
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, Iowa 50011, United States
| | - Igor I. Slowing
- U.S. Department of Energy Ames Laboratory, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
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44
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Xu X, Huang T, Xu Y, Hu H, Liao S, Hu X, Chen D, Zhang M. Highly dispersed CeO2– nanoparticles with rich oxygen vacancies enhance photocatalytic performance of g-C3N4 toward methyl orange degradation under visible light irradiation. J RARE EARTH 2021. [DOI: 10.1016/j.jre.2021.08.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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45
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Yang Q, Lu L, Xu Q, Tang S, Yu Y. Using Post-graphene 2D Materials to Detect and Remove Pesticides: Recent Advances and Future Recommendations. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2021; 107:185-193. [PMID: 32435844 DOI: 10.1007/s00128-020-02868-z] [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: 02/10/2020] [Accepted: 04/29/2020] [Indexed: 06/11/2023]
Abstract
Detection and removal of pesticides have become increasingly imperative as the widespread production and use of pesticides severely contaminate soil and groundwater and cause serious problems to non-target species such as human and animals. Recently, new two-dimensional materials beyond graphene (e.g., transition metal dichalcogenides, layered double hydroxides), called post-graphene two-dimensional materials (pg-2DMs), have exhibited promising potentials in detecting and removing pesticides due to their unique physiochemical attributes such as high photocatalytic activity and large specific surface area. This review summarizes the recent advances of utilizing pg-2DMs to detect, degrade and adsorb pesticides (e.g., thiobencarb, methyl parathion, paraquat). The current gaps and future prospects of this field are discussed as well.
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Affiliation(s)
- Qi Yang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211800, People's Republic of China
| | - Lingxia Lu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211800, People's Republic of China
| | - Qing Xu
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, People's Republic of China.
| | - Susu Tang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211800, People's Republic of China
| | - Yadong Yu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211800, People's Republic of China.
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, People's Republic of China.
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Rezaei A, Rezaei MR, Sayadi MH. Enhanced 3,5-dimethylphenol photodegradation via adsorption-photocatalysis synergy using FSTRG nanohybrid catalyst. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116546] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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47
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Xu X, Wang J, Shen Y. An Interface Optimization Strategy for g-C 3N 4-Based S-Scheme Heterojunction Photocatalysts. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:7254-7263. [PMID: 34096308 DOI: 10.1021/acs.langmuir.1c01009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Graphitic carbon nitride (CN) has attracted much attention in photocatalytic fields due to its unique electronic band structure. However, the rapid recombination of photogenerated carriers severely inhibits its catalytic activity. The heterojunction structure has been widely confirmed to significantly improve the photocatalytic activity of CN through the formed interface structure. However, researchers often give attention to the band matching and conductivity of the cocatalyst, while the importance of the interface as a migration channel for photogenerated carriers is often overlooked. In this work, we adopt the strategy of morphology engineering to regulate the morphology of the CN photoactive component so as to achieve the interface optimization of the traditional heterojunction structure. The photocatalytic degradation experiment of rhodamine B shows that compared with the traditional CeO2@CN heterojunction structure, the photocatalytic activity of the interface-optimized CeO2/CN is increased by more than 20%. The following points could be used to explain the improvement of photocatalytic activity: (I) the formed S-scheme heterojunction structure, which inhibits the recombination of useful electrons and holes but expedites the recombination of relatively useless electrons and holes, (II) the increased interface area, which provides more carrier migration channels, and (III) the reduced interface contact resistance, which facilitates the separation and migration of photogenerated carriers. Furthermore, the interface optimization of the traditional Al2O3@CN and Fe2O3@CN heterojunction structures also achieved consistent results. This shows that the strategy in this work is a universal method for interface optimization, which provides potential alternative for further improving the catalytic activity of other heterojunction composites.
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Affiliation(s)
- Xin Xu
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, PR China
| | - Jianhai Wang
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, PR China
| | - Yuesong Shen
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, PR China
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Xu F, Lai C, Zhang M, Li B, Liu S, Chen M, Li L, Xu Y, Qin L, Fu Y, Liu X, Yi H, Yang X. Facile one-pot synthesis of carbon self-doped graphitic carbon nitride loaded with ultra-low ceric dioxide for high-efficiency environmental photocatalysis: Organic pollutants degradation and hexavalent chromium reduction. J Colloid Interface Sci 2021; 601:196-208. [PMID: 34077842 DOI: 10.1016/j.jcis.2021.05.124] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 05/06/2021] [Accepted: 05/21/2021] [Indexed: 01/19/2023]
Abstract
In the present study, an innovative carbon self-doped g-C3N4 (CCN) loaded with ultra-low CeO2 (0.067-0.74 wt%) composite photocatalyst is successfully synthesized via a facile one-pot hydrothermal and calcination method. The CeO2/CCN exhibits superior photocatalytic performance for tetracycline degradation (78.9% within 60 min), H2O2 production (151.92 μmol L-1 within 60 min), and Cr(VI) reduction (99.5% within 40 min), which much higher than that of g-C3N4, CCN, CeO2, and CeO2/g-C3N4. The enhanced photocatalytic performance is originated from the fact that the doping of C can efficaciously broaden the utilization range of solar light and improve the reduction ability of photogenerated electrons. Meanwhile, the ultra-low loading of CeO2 can effectually promote the migration of photogenerated electrons and enhance the specific surface area. Besides, the experiments of pH effect and cycle ability indicate that CeO2/CCN has excellent durability and stability. Finally, the photocatalytic mechanism of CeO2/CCN is systematically discussed. This work proves that combining element doping and semiconductor coupling is a promising strategy to design high-efficiency g-C3N4-based photocatalysts.
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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
| | - 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
| | - Ming Chen
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, 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
| | - Yang 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
| | - 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
| | - Xigui 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
| | - 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
| | - Xiaofeng Yang
- 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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Zhao W, Ma S, Yang G, Wang G, Zhang L, Xia D, Huang H, Cheng Z, Xu J, Sun C, Leung DYC. Z-scheme Au decorated carbon nitride/cobalt tetroxide plasmonic heterojunction photocatalyst for catalytic reduction of hexavalent chromium and oxidation of Bisphenol A. JOURNAL OF HAZARDOUS MATERIALS 2021; 410:124539. [PMID: 33229256 DOI: 10.1016/j.jhazmat.2020.124539] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 11/04/2020] [Accepted: 11/07/2020] [Indexed: 05/25/2023]
Abstract
Au/g-C3N4/Co3O4 plasmonic heterojunction photocatalyst was successfully prepared by in-situ forming Co3O4 nanocubes on the Au/g-C3N4 nanosheets. The catalytic activities of the photocatalysts were systematically studied through the catalytic reduction of hexavalent chromium (Cr6+) and oxidation of Bisphenol A (BPA) under visible light irradiation, while according to the degradation products determined by GC-MS, the catalytic degradation pathway of BPA was proposed. 4Au/g-C3N4/Co3O4 sample exhibits the most efficient catalytic activities, and the photocatalytic reduction and photocatalytic oxidation efficiencies can obtain 85.6% and 90.3%, respectively. The main reasons of the enhancing catalytic performance are the high absorption capability to visible light generated by localized surface plasmon resonance and the effective interface charge separation. Finally, we speculated that the Au/g-C3N4/Co3O4 sample followed Z-scheme charge transfer mechanism in this study, which is verified by the analysis of experiment and theoretical calculation results.
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Affiliation(s)
- Wei Zhao
- School of Materials Engineering, Changshu Institute of Technology, Changshu, China; Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian, China; School of Environment, Nanjing Normal University, Nanjing, China
| | - Sisi Ma
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian, China
| | - Gang Yang
- School of Materials Engineering, Changshu Institute of Technology, Changshu, China
| | - Guoxiang Wang
- School of Environment, Nanjing Normal University, Nanjing, China
| | - Lili Zhang
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian, China
| | - Dehua Xia
- School of Environmental Science and Engineering, Sun Yat-Sen University, China
| | - Haibao Huang
- School of Environmental Science and Engineering, Sun Yat-Sen University, China
| | - Zhipeng Cheng
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian, China.
| | - Jiming Xu
- School of Materials Engineering, Changshu Institute of Technology, Changshu, China
| | - Cheng Sun
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, China.
| | - Dennis Y C Leung
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
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Humayun M, Pi W, Yuan Y, Shu L, Cao J, Khan A, Zheng Z, Fu Q, Tian Y, Luo W. A rational design of g-C 3N 4-based ternary composite for highly efficient H 2 generation and 2,4-DCP degradation. J Colloid Interface Sci 2021; 599:484-496. [PMID: 33964694 DOI: 10.1016/j.jcis.2021.04.049] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/10/2021] [Accepted: 04/11/2021] [Indexed: 10/25/2022]
Abstract
In this work, g-C3N4 based ternary composite (CeO2/CN/NH2-MIL-101(Fe)) has been fabricated via hydrothermal and wet-chemical methods. The composite showed superior photoactivities for H2O reduction to produce H2 and 2,4-dichlorophenol (2,4-DCP) degradation. The amount of H2 evolved over the composite under visible and UV-visible irradiations is 147.4 µmol·g-1·h-1 and 556.2 µmol·g-1·h-1, respectively. Further, the photocatalyst degraded 87% of 2,4-DCP in 2 hrs under visible light irradiations. The improved photoactivities are accredited to the synergistic-effects caused by the proper band alignment with close interfacial contact of the three components that significantly promoted charge transfer and separation. The 2,4-DCP degradation over the composite is dominated by OH radical rather than h+ and O2- as investigated by scavenger trapping experiments. This is further supported by the electron para-magnetic resonance (EPR) study. This work provides new directions for the development of g-C3N4 based highly efficient ternary composite materials for clean energy generation and pollution control.
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Affiliation(s)
- Muhammad Humayun
- Engineering Research Center for Functional Ceramics of the Ministry of Education, School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, PR China; Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Wenbo Pi
- Engineering Research Center for Functional Ceramics of the Ministry of Education, School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Yang Yuan
- Engineering Research Center for Functional Ceramics of the Ministry of Education, School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Lang Shu
- Engineering Research Center for Functional Ceramics of the Ministry of Education, School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Junhao Cao
- Engineering Research Center for Functional Ceramics of the Ministry of Education, School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Abbas Khan
- Department of Chemistry, Abdul Wali Khan University Mardan, Mardan 23200, Khyber Pakhtunkhwa, Pakistan
| | - Zhiping Zheng
- Engineering Research Center for Functional Ceramics of the Ministry of Education, School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Qiuyun Fu
- Engineering Research Center for Functional Ceramics of the Ministry of Education, School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Yahui Tian
- Institute of Acoustics, Chinese Academy of Sciences, Beijing 100049, PR China.
| | - Wei Luo
- Engineering Research Center for Functional Ceramics of the Ministry of Education, School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, PR China; Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, PR China.
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