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Wang K, Xu M, Fang Z, Chen X, Liu L, Zhang H, Cao X. Enhanced photocatalytic activity of magnetically recyclable spherical Fe 3O 4/Cu 2O S-scheme heterojunction. ENVIRONMENTAL TECHNOLOGY 2024; 45:3986-4002. [PMID: 37452738 DOI: 10.1080/09593330.2023.2238131] [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: 04/28/2023] [Accepted: 07/07/2023] [Indexed: 07/18/2023]
Abstract
In this study, magnetically recyclable spherical Fe3O4/Cu2O particles comprising S-scheme heterojunctions were prepared by a simple hydrothermal approach using n-type semiconductor Fe3O4 as precursor and p-type semiconductor Cu2O. A Fenton-like system was thus constructed via the addition to Fe3O4/Cu2O of hydrogen peroxide. A rhodamine B (RhB) solution was used to simulate polluted wastewater, and photocatalytic RhB removal experiments were conducted under visible light irradiation. Powder X-ray diffractometry, vibrating-sample magnetometry, nitrogen adsorption-desorption, transmission electron microscopy, and X-ray photoelectron spectroscopy experiments were conducted to characterise Fe3O4 and Fe3O4/Cu2O composite. The band gap of Fe3O4/Cu2O was 1.76 eV, narrower than that of Fe3O4 (2.14 eV). The effects of the pH, sample dosage, hydrogen peroxide concentration, and RhB initial concentration on RhB removal were investigated. According to evidence, under the optimum reaction conditions, the RhB removal rate was 99.4%. The Fe3O4/Cu2O composite exhibited good photocatalytic efficacy even after four cycles of testing. Based on the results of free radical capture experiments, hydroxyl radicals and holes cooperated as main reactive species in the photocatalytic system. The Fe3O4/Cu2O photocatalyst can be easily removed based on magnetism, and it has been proven to be very effective for the degradation of RhB under both UV and visible light irradiation.
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Affiliation(s)
- Kai Wang
- Liaoning Engineering Research Center for Treatment and Recycling of Industrially Discharged Heavy Metals, Shenyang University of Chemical Technology, Shenyang, People's Republic of China
| | - Man Xu
- Liaoning Engineering Research Center for Treatment and Recycling of Industrially Discharged Heavy Metals, Shenyang University of Chemical Technology, Shenyang, People's Republic of China
| | - Zhenxing Fang
- College of Science and Technology, Ningbo University, Ningbo, People's Republic of China
| | - Xiao Chen
- Liaoning Engineering Research Center for Treatment and Recycling of Industrially Discharged Heavy Metals, Shenyang University of Chemical Technology, Shenyang, People's Republic of China
| | - Lixin Liu
- Liaoning Engineering Research Center for Treatment and Recycling of Industrially Discharged Heavy Metals, Shenyang University of Chemical Technology, Shenyang, People's Republic of China
| | - Haiyue Zhang
- Liaoning Engineering Research Center for Treatment and Recycling of Industrially Discharged Heavy Metals, Shenyang University of Chemical Technology, Shenyang, People's Republic of China
| | - Xuan Cao
- Liaoning Engineering Research Center for Treatment and Recycling of Industrially Discharged Heavy Metals, Shenyang University of Chemical Technology, Shenyang, People's Republic of China
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Zhu Z, Qian W, Shang Z, Ma X, Wang Z, Lu W, Chen W. Efficient elimination of carbamazepine using polyacrylonitrile-supported pyridine bridged iron phthalocyanine nanofibers by activating peroxymonosulfate in dark condition. J Environ Sci (China) 2024; 137:224-236. [PMID: 37980010 DOI: 10.1016/j.jes.2022.10.046] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 10/26/2022] [Accepted: 10/28/2022] [Indexed: 11/20/2023]
Abstract
The monoaminotrinitro iron phthalocyanine (FeMATNPc) is used to connect with isonicotinic acid (INA) for amide bonding and axial coordination to synthetic a unique catalyst FeMATNPc-INA, which is loaded in polyacrylonitrile (PAN) nanofibers by electrospinning. The introduction of INA destroys the π-π conjugated stack structure in phthalocyanine molecules and exposes more active sites. The FeMATNPc-INA structure is characterized by X-ray photoelectron spectroscopy and UV-visible absorption spectrum, and the FeMATNPc-INA/PAN structure is characterized by Fourier transform infrared spectroscopy and X-ray diffraction. The FeMATNPc-INA/PAN can effectively activate peroxymonosulfate (PMS) to eliminate carbamazepine (CBZ) within 40 minutes (PMS 1.5 mmol/L) in the dark. The effects of catalyst dosage, PMS concentration, pH and inorganic anion on the degradation of CBZ are investigated. It has been confirmed by electron paramagnetic resonance, gas chromatography-mass spectroscopy and free radical capture experiments that the catalytic system is degraded by •OH, SO4•- and Fe (IV) = O are the major active species, the singlet oxygen (1O2) is the secondary active species. The degradation process of CBZ is analyzed by ultra-high performance liquid chromatography-mass spectrometry and the aromatic compounds have been degraded to small molecular acids.
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Affiliation(s)
- Zhexin Zhu
- National Engineering Lab for Textile Fiber Materials and Processing Technology (Zhejiang), Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Wenjie Qian
- National Engineering Lab for Textile Fiber Materials and Processing Technology (Zhejiang), Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Zhiguo Shang
- National Engineering Lab for Textile Fiber Materials and Processing Technology (Zhejiang), Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xiaoji Ma
- National Engineering Lab for Textile Fiber Materials and Processing Technology (Zhejiang), Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Zhendong Wang
- National Engineering Lab for Textile Fiber Materials and Processing Technology (Zhejiang), Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Wangyang Lu
- National Engineering Lab for Textile Fiber Materials and Processing Technology (Zhejiang), Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Wenxing Chen
- National Engineering Lab for Textile Fiber Materials and Processing Technology (Zhejiang), Zhejiang Sci-Tech University, Hangzhou 310018, China
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Guo C, Tao C, Yu F, Zhao Z, Wang Z, Deng N, Huang X. Ball-milled layer double hydroxide as persulfate activator for efficient degradation of organic: Alkaline sites-triggered non-radical mechanism. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132219. [PMID: 37722323 DOI: 10.1016/j.jhazmat.2023.132219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/01/2023] [Accepted: 08/02/2023] [Indexed: 09/20/2023]
Abstract
Considerable efforts have been put into enhancing the activation performance of peroxydisulfate (PDS) by catalysts toward oxidative degradation of organic pollutants, while the oxidative selectivity is somehow overlooked. Here, we reported an enhanced non-radical oxidation pathway of PDS, activated by ball-milled Mg/Al-layered double hydroxide (BM-LDH), to reconcile the selectivity and reactivity. EPR and quenching experiments suggested that 1O2 dominated the oxidative pathway for phenol degradation without generating carcinogenic halide by-products. Multiple interfacial characterizations and density functional theory (DFT) calculations revealed that BM-LDH played dual roles in PDS activation: (1) the interlaminar BM-LDH allowed PDS intercalation to form complexed PDS, resulting in decreases in the activation barrier of PDS; (2) abundant terminal hydroxyls in the layers of BM-LDH acted as alkaline-activation sites that can efficiently activate PDS to generate 1O2 toward phenol degradation. Ball-milling treatment of LDH refined the structural hierarchy of LDH to create pore volumes, which greatly enhanced the diffusion of phenol to the intercalated PDS, resulting in more than twice the reaction rate for phenol degradation. This study provided a promising approach to simultaneously control over the reactivity and selectivity toward PDS activation that are critical for the degradation of organic pollutants particularly in drinking water treatment.
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Affiliation(s)
- Changjin Guo
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Chen Tao
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Fang Yu
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Zhenzhen Zhao
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Zhiquan Wang
- School of Life and Environmental Science, Wenzhou University, Wenzhou, Zhejiang 325035, China
| | - Ning Deng
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
| | - Xin Huang
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
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Large-Scale Synthesis of Iron Ore@Biomass Derived ESBC to Degrade Tetracycline Hydrochloride for Heterogeneous Persulfate Activation. Catalysts 2022. [DOI: 10.3390/catal12111345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Iron-based catalysts are widely used in water treatment and environmental remediation due to their abundant content in nature and their ability to activate persulfate at room temperature. Here, eggshell biochar-loaded natural iron slag (IO@ESBC) was successfully synthesized to remove tetracycline hydrochloride (TCH) by activated persulfate. The morphology, structure and chemical composition of IO@ESBC were systematically characterized. The IO@ESBC/PS process showed good performance for TCH removal. The decomposition rate constant (k) for IO@ESBC was 0.011 min−1 and the degradation rate was 3690 mmol/g/h in this system. With the increase of PS concentration and IO@ESBC content, the removal rate of TCH both increased. The IO@ESBC/PS process can effectively remove TCH at pH 3–9. There are different effects on TCH removal for the reason that the addition of water matrix species (humic acid, Cl−, HCO3−, NO3− and HPO42−). The IO@ESBC/PS system for degrading TCH was mainly controlled by both the free radical pathway (SO4•−, •OH and O2•−) and non-free radical pathway (1O2). The loading of ESBC slows down the agglomeration between iron particles, and more active sites are exposed. The removal rate of TCH was still above 75% after five cycles of IO@ESBC. This interesting investigation has provided a green route for synthesis of composite driving from waste resources, expanding its further application for environmental remediations.
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Feng W, Lin H, Armutlulu A, Chen J, Liu R, Xie R, Lai B. Anodic activation of persulfate by V-mediated Ti4O7: Improved stability and ROS generation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zhao J, Liu G, Zhang Y, Dong J, Wang Y, Liu Y, Li H, Xia J. Fabrication of MoS2/FeOCl composites as heterogeneous photo-fenton catalysts for the efficient degradation of water pollutants under visible light irradiation. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129357] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Wang Z, Ren D, Huang Y, Zhang S, Zhang X, Chen W. Degradation mechanism and pathway of 2,4-dichlorophenol via heterogeneous activation of persulfate by using Fe-Cu-MOF@C nanocatalyst. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Wang Y, Armutlulu A, Lin H, Wu M, Zhang W, Xie R, Lai B. Novel sodalite stabilized zero-valent iron for super stable and outstanding efficiency in activating persulfate for organic pollutants fast removal. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 825:153893. [PMID: 35182635 DOI: 10.1016/j.scitotenv.2022.153893] [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: 12/02/2021] [Revised: 01/03/2022] [Accepted: 02/11/2022] [Indexed: 06/14/2023]
Abstract
In this study, novel porous sodalite (SOD) was synthesized through Reactive Oxidation Species (ROS) route from industrial waste lithium silicon fume (LSF) to stabilize nZVI (SOD@nZVI), and used as an outstanding persulfate (PS) activator for efficient organic degradation. Characterization results revealed nZVI evenly distributed on SOD via ion-exchange, and the fabricated SOD@nZVI exhibited high stability and superior reactivity over a wide pH range of 2-12 during oxidation reaction. The mechanism responsible for fast organic degradation in the SOD@nZVI+PS system was carefully investigated, and weak magnetic field (WMF) and friction were found to contribute to improved SOD@nZVI performance. The fast redox cycle of Fe2+/Fe3+ on SOD@nZVI can be stimulated by changing the mixing condition and altering the friction layer to harvest mechanical energy during the reaction, which can maximum persulfate activation to generate more reactive radicals for organic fast degradation. This study is of great significance, as it offers a practical route turning waste into excellent PS activator for in-situ organic pollution remediation, as well as proposing a new idea to maximum PS activation performance by manipulating the inner lining of reactor.
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Affiliation(s)
- Yinxu Wang
- MOE Key Laboratory of Deep Earth Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, PR China
| | - Andac Armutlulu
- Department of Mechanical and Process Engineering, ETH Zürich, Leonhardstrasse 27, 8092 Zurich, Switzerland
| | - Hui Lin
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, PR China
| | - Maolin Wu
- Public Engineering Department of PetroChina Sichuan Petrochemical Co., Ltd, Chengdu 611930, PR China
| | - Weijuan Zhang
- MOE Key Laboratory of Deep Earth Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, PR China
| | - Ruzhen Xie
- MOE Key Laboratory of Deep Earth Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, PR China.
| | - Bo Lai
- MOE Key Laboratory of Deep Earth Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, PR China
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Li X, Jie B, Lin H, Deng Z, Qian J, Yang Y, Zhang X. Application of sulfate radicals-based advanced oxidation technology in degradation of trace organic contaminants (TrOCs): Recent advances and prospects. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 308:114664. [PMID: 35149402 DOI: 10.1016/j.jenvman.2022.114664] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 01/11/2022] [Accepted: 02/01/2022] [Indexed: 06/14/2023]
Abstract
The large amount of trace organic contaminants (TrOCs) in wastewater has caused serious impacts on human health. In the past few years, Sulfate radical (SO4•-) based advanced oxidation processes (SR-AOPs) are widely recognized for their high removal rates of recalcitrant TrOCs from water. Peroxymonosulfate (PMS) and persulfate (PS) are stable and non-toxic strong oxidizing oxidants and can act as excellent SO4•- precursors. Compared with hydroxyl radicals(·OH)-based methods, SR-AOPs have a series of advantages, such as long half-life and wide pH range, the oxidation capacity of SO4•- approaches or even exceeds that of ·OH under suitable conditions. In this review, we present the progress of activating PS/PMS to remove TrOCs by different methods. These methods include activation by transition metal, ultrasound, UV, etc. Possible activation mechanisms and influencing factors such as pH during the activation are discussed. Finally, future activation studies of PS/PMS are summarized and prospected. This review summarizes previous experiences and presents the current status of SR-AOPs application for TrOCs removal. Misconceptions in research are avoided and a research basis for the removal of TrOCs is provided.
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Affiliation(s)
- Xingyu Li
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Borui Jie
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Huidong Lin
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Zhongpei Deng
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Junyao Qian
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Yiqiong Yang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Xiaodong Zhang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China.
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Xu C, Yang G, Li J, Zhang S, Fang Y, Peng F, Zhang S, Qiu R. Efficient purification of tetracycline wastewater by activated persulfate with heterogeneous Co-V bimetallic oxides. J Colloid Interface Sci 2022; 619:188-197. [PMID: 35395537 DOI: 10.1016/j.jcis.2022.03.126] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 03/24/2022] [Accepted: 03/27/2022] [Indexed: 12/26/2022]
Abstract
The persistence and wide dispersion of antibiotics have a severe impact on the ecological environment. Developing an effective method with universal applicability to remove pollutants is pretty necessary. Herein, a bimetallic oxides (Co3V2O8) heterogeneous material was successfully prepared and used to activate the persulfate (PS) for purification of tetracycline (TC) wastewater. By exploring the reaction conditions and influencing factors, the removal rate of 50 mg⋅L-1 TC reached 87.1% by Co3V2O8/PS system, and the reaction rate constant was up to 0.0271 min-1. As a highly efficient catalyst for the activation of PS, Co3V2O8/PS system produces radicals of SO4•-, •OH, •O2- and 1O2 in the reaction process due to the Co(II) and V(IV) exchange electrons with S2O82- and O2. Simultaneously, the internal electron exchange occurs between Co(II)/Co(III) and V(IV)/V(V), which stabilizes the content of Co(II) and V(IV). This work provides a novel activator for PS activation to degrade contaminants and contributes to a better understanding of the PS activation mechanism by transition compound.
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Affiliation(s)
- Chuanyi Xu
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Guanrong Yang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Jie Li
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Shanqing Zhang
- Centre for Clean Environment and Energy and School of Environment and Science, Griffith University, Gold Coast, QLD 4222, Australia
| | - Yueping Fang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
| | - Feng Peng
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Shengsen Zhang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China.
| | - Rongliang Qiu
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
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Tang X, Yu C, Lei Y, Wang Z, Wang C, Wang J. A novel chitosan-urea encapsulated material for persulfate slow-release to degrade organic pollutants. JOURNAL OF HAZARDOUS MATERIALS 2022; 426:128083. [PMID: 34923382 DOI: 10.1016/j.jhazmat.2021.128083] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/26/2021] [Accepted: 12/11/2021] [Indexed: 06/14/2023]
Abstract
A novel eco-friendly material (CS-U@PS) for persulfate slow-release to effectively degrade organic pollutants (methyl orange and pyrene) was synthesized using chitosan and urea as the encapsulated framework materials via an emulsion cross-linking method for the first time. The obtained CS-U@PS exhibits spherical shapes with a uniform size of approximately 2-3 µm according to the particle-size distribution and SEM image results. The slow-release mechanism was proposed through a kinetics model study and the Ritger-Peppas model fit well (r2 = 0.9699) to indicate that the slow-release process is non-Fickian diffusion. The influences of urea and PS dosages and oxidative conditions on methyl orange degradation were studied, and all the results suggested that urea played an important role in PS slow-release and can also catalyze the activation of PS by iron to further produce radicals and improve the removal efficiency of pollutants. A pyrene removal rate of 90.53% was achieved in aqueous solutions and an above 80% removal rate was obtained in weakly acidic or neutral soil environments by CS-U@PS activated by Fe2+ with citric acid as the chelating agent. Therefore, the fabricated slow-release oxidation materials exhibit application potential for the remediation of organic polluted groundwater and soil.
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Affiliation(s)
- Xuejiao Tang
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Urban Environmental Pollution Diagnosis and Remediation Technology Engineering Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China.
| | - Congya Yu
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Urban Environmental Pollution Diagnosis and Remediation Technology Engineering Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Yuanyuan Lei
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Urban Environmental Pollution Diagnosis and Remediation Technology Engineering Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Zhen Wang
- School of Chemical Engineering, Hebei University of Technology, Tianjin 300130, PR China
| | - Cuiping Wang
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Urban Environmental Pollution Diagnosis and Remediation Technology Engineering Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China
| | - Jingang Wang
- School of Chemical Engineering, Hebei University of Technology, Tianjin 300130, PR China.
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Feng W, Faraj Y, Yan Y, An Y, Xie R, Lai B. Novel Pyrolusite-Templated Biochar as an Outstanding Catalyst for Persulfate Activation: Structural Design, Synergistic Effect, and Mechanism. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04459] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Wenwei Feng
- MOE Key Laboratory of Deep Earth Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, P. R. China
| | - Yousef Faraj
- Faculty of Science and Engineering, Department of Chemical Engineering, University of Chester, Chester CH2 4NU, United Kingdom
| | - Yuan Yan
- MOE Key Laboratory of Deep Earth Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, P. R. China
| | - Yaoxiao An
- MOE Key Laboratory of Deep Earth Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, P. R. China
| | - Ruzhen Xie
- MOE Key Laboratory of Deep Earth Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, P. R. China
| | - Bo Lai
- MOE Key Laboratory of Deep Earth Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, P. R. China
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Insights into enhanced peroxydisulfate activation with S doped Fe@C catalyst for the rapid degradation of organic pollutants. J Colloid Interface Sci 2021; 610:24-34. [PMID: 34920214 DOI: 10.1016/j.jcis.2021.12.046] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 12/06/2021] [Accepted: 12/07/2021] [Indexed: 01/09/2023]
Abstract
In this study, the S modified iron-based catalyst (S-Fe@C) for activating peroxydisulfate (PDS) was fabricated by heating the S-MIL-101 (Fe) precursor at 800 °C. The resulted S-Fe@C composite mainly consisted of carbon, Fe0, FeS, FeS2, and Fe3O4, and showed strong magnetism. Compared with Fe@C obtained from MIL-101 (Fe), the S-Fe@C exhibited much higher performance (1.5 times larger) on PDS activation and the S-Fe@C/PDS could rapidly degrade various organic pollutants in 5 min under the attack of the species of SO4-·, 1O2, electro-transfer and Fe(IV). The S element in enhancing the PDS activation mainly involved two mechanisms. Firstly, the doped S could speed up the electron transfer efficiency, resulting in a promotion on PDS decomposition; secondly, the S2- S22- or S0 could achieve the circulation of Fe2+ and Fe3+, leading to the formation of non-radicals Fe(IV) and 1O2.
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Zhou R, Liu S, He F, Ren H, Han Z. Alkylpolyglycoside modified MnFe 2O 4 with abundant oxygen vacancies boosting singlet oxygen dominated peroxymonosulfate activation for organic pollutants degradation. CHEMOSPHERE 2021; 285:131433. [PMID: 34237500 DOI: 10.1016/j.chemosphere.2021.131433] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/18/2021] [Accepted: 07/02/2021] [Indexed: 06/13/2023]
Abstract
A novel alkylpolyglycoside (APG)-modified MnFe2O4 nanocomposite (APG@MnFe2O4) enriched with oxygen vacancies (VOs) was developed via co-precipitation and characterized as a peroxymonosulfate (PMS) activator to degrade 2,4-dichlorophenol (2,4-DCP) as the model contaminant. The APG effectively promoted the in situ formation of VOs on MnFe2O4 and subsequently enhanced the production of singlet oxygen (1O2). Furthermore, the APG@MnFe2O4 initialized an even more efficient non-radical pathway and dominated the degradation of 2,4-DCP. The constructed APG@MnFe2O4 exhibited a much higher reaction rate constant (0.0522) by ~12.73 times of that of the bare MnFe2O4 (0.0041). The degradation efficiency of 2,4-DCP in the APG@MnFe2O4/PMS system approached 93% within 90 min, a rate significantly higher than that in the MnFe2O4/PMS system (32%) given the same condition. The reasonable catalytic mechanism can be attributed to the Fe/Mn/VOs species. The APG@MnFe2O4 also exhibits universally high removal activity for various pollutants and excellent cyclic stability. Thus, the APG@MnFe2O4 is a promising PMS activator, and its utilization offers a useful strategy for developing VOs-enriched MnFe2O4 catalysts as a means of eliminating organic pollutants from wastewater.
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Affiliation(s)
- Rui Zhou
- Key Laboratory of Groundwater Resources and Environment of the Ministry of Education, Jilin Provincial Key Laboratory of Water Resource and Environment, College of New Energy and Environment, Jilin University, 2519 Jiefang Road, Changchun, 130021, China
| | - Shuai Liu
- Key Laboratory of Groundwater Resources and Environment of the Ministry of Education, Jilin Provincial Key Laboratory of Water Resource and Environment, College of New Energy and Environment, Jilin University, 2519 Jiefang Road, Changchun, 130021, China
| | - Fangru He
- Key Laboratory of Groundwater Resources and Environment of the Ministry of Education, Jilin Provincial Key Laboratory of Water Resource and Environment, College of New Energy and Environment, Jilin University, 2519 Jiefang Road, Changchun, 130021, China
| | - Hejun Ren
- Key Laboratory of Groundwater Resources and Environment of the Ministry of Education, Jilin Provincial Key Laboratory of Water Resource and Environment, College of New Energy and Environment, Jilin University, 2519 Jiefang Road, Changchun, 130021, China.
| | - Zhonghui Han
- Key Laboratory of Groundwater Resources and Environment of the Ministry of Education, Jilin Provincial Key Laboratory of Water Resource and Environment, College of New Energy and Environment, Jilin University, 2519 Jiefang Road, Changchun, 130021, China.
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