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Deng S, Yang M, An Q, Li Z, Zhao B, Ran B. Efficient rhodamine B dye degradation by red mud-grapefruit peel biochar catalysts activated persulfate in water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:119034-119049. [PMID: 37919501 DOI: 10.1007/s11356-023-30537-1] [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: 07/10/2023] [Accepted: 10/13/2023] [Indexed: 11/04/2023]
Abstract
The continuous and rapid development of textile industry intensifies rhodamine B dye (RhB) wastewater pollution. Meanwhile, massive red mud (RM) solid waste generated by the industrial alumina production process poses detrimental effects to the environment after leaching. For resource utilization and to reduce the expansion of RhB pollution, RM and peel red mud-biochar composite (RMBC) catalyst were synthesized in activating peroxydisulfate (PDS) for RhB degradation. Firstly, characterization results showed that compared to RM, RMBC had a higher content of catalytically active metals (Fe, Al, Ti) (higher than 0.92-4.18%), smaller pore size, and larger specific surface area (10 times), which verified RMBC had more potential catalytic oxidation activity. Secondly, under optimal dosage (catalyst, PDS), pH 4.6, and 20 mg L-1 RhB, it was found that the RhB degradation ratio of RM was 76.70%, which was reduced to 41% after three cycles, while that of RMBC was 89.98% and 67%, respectively. The results indicated that the performance of RMBC was significantly superior to that of RM. Furthermore, the quenching experiments, electron paramagnetic resonance spectroscopy tests, FTIR, and XPS analysis showed the function of O-H, C=O, C-O, Fe-O, and Fe-OH functional groups, which converted the PDS to the active state and hydrolyzed it to produce free radicals ([Formula: see text], 1O2, [Formula: see text]) for RhB degradation. And, Q Exactive Plus MS test obtained that RhB was degraded to CO2, H2O, and intermediate products. This study aimed to raise a new insight to the resource utilization of RM and the control of dye pollution.
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Affiliation(s)
- Shuman Deng
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, People's Republic of China
| | - Maolin Yang
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, People's Republic of China
| | - Qiang An
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, People's Republic of China.
- The Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Chongqing University, Chongqing, 400045, People's Republic of China.
| | - Zheng Li
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, People's Republic of China
| | - Bin Zhao
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, People's Republic of China
| | - Binbin Ran
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, People's Republic of China
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2
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Zhang Q, Wang J, Wei Z, Li Y, Li W, Yang X, Wu X. S modified manganese oxide for high efficiency of peroxydisulfate activation: Critical role of S and mechanism. CHEMOSPHERE 2023; 328:138563. [PMID: 37028724 DOI: 10.1016/j.chemosphere.2023.138563] [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: 01/16/2023] [Revised: 03/28/2023] [Accepted: 03/31/2023] [Indexed: 06/19/2023]
Abstract
Mn2O3 as a typical Mn based semiconductor has attracted growing attention due to its peculiar 3d electron structure and stability, and the multi-valence Mn on the surface is the key to peroxydisulfate activation. Herein, an octahedral structure of Mn2O3 with (111) exposed facet was synthesized by a hydrothermal method, which was further sulfureted to obtained a variable-valent Mn oxide for the high activation efficiency of peroxydisulfate under the light emitting diode irradiation. The degradation experiments showed that under the irradiation of 420 nm light, S modified manganese oxide showed an excellent removal for tetracycline within 90 min, which is about 40.4% higher than that of pure Mn2O3. In addition, the degradation rate constant k of S modified sample increased 2.17 times. Surface sulfidation not only increased the active sites and oxygen vacancies on the pristine Mn2O3 surface, but also changed the electronic structure of Mn due to the introduce of surface S2-. This modification accelerated the electronic transmission during the degradation process. Meanwhile, the utilization efficiency of photogenerated electrons was greatly improved under light. Besides, the S modified manganese oxide had an excellent reuse performance after four cycles. The scavenging experiments and EPR analyses showed that •OH and 1O2 were the main reactive oxygen species. This study therefore provides a new avenue for further developing manganese-based catalysts towards high activation efficiency for peroxydisulfate.
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Affiliation(s)
- Qingwen Zhang
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Jinpeng Wang
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Zhenlun Wei
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Yubiao Li
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China.
| | - Wanqing Li
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Xu Yang
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Xiaoyong Wu
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China.
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Cai S, Wang T, Wu C, Tang W, Chen J. Efficient degradation of norfloxacin using a novel biochar-supported CuO/Fe 3O 4 combined with peroxydisulfate: Insights into enhanced contribution of nonradical pathway. CHEMOSPHERE 2023; 329:138589. [PMID: 37023897 DOI: 10.1016/j.chemosphere.2023.138589] [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: 10/14/2022] [Revised: 01/28/2023] [Accepted: 04/01/2023] [Indexed: 05/03/2023]
Abstract
Nonradical persulfate oxidation techniques have evolved as a new contaminated water treatment approach due to its great tolerance to water matrixes. The catalysts of CuO-based composites have received much attention in that aside from SO4•-/•OH radicals, the nonradicals of singlet oxygen (1O2) can be also generated during persulfate activation via CuO. However, the issues regarding particles aggregation and metal leaching from the catalysts during the decontamination process remain to be addressed, which could have a remarkable impact on the catalytic degradation of organic pollutants. Accordingly in the present study, a novel biochar-supported bimetallic Fe3O4-CuO catalyst (CuFeBC) was facilely developed to activate peroxodisulfate (PDS) for the degradation of norfloxacin (NOR) in aqueous solution. The results showed CuFeBC has a superior stability against metal ions Cu/Fe leaching, and NOR (30 mg L-1) was degraded at 94.5% within 180 min in the presence of CuFeBC (0.5 g L-1) and PDS (6 mM) in pH 8.5. The scavenging of reactive oxygen species and electron spin resonance analysis revealed that 1O2 dominated the degradation of NOR. Compared with pristine CuO-Fe3O4, the interaction between biochar substrate and metal particles could significantly enhance the contribution of the nonradical pathway to NOR degradation from 49.6% to 84.7%. Biochar substrate could efficiently reduce the leaching of metal species from the catalyst, thereby maintaining excellent catalytic activity and lasting reusability of the catalyst. These findings could enlighten new insights into fine-tuning radical/nonradical processes from CuO-based catalysts for the efficient remediation of organic contaminants in polluted water.
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Affiliation(s)
- Song Cai
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing, 100083, PR China; School of Earth Sciences and Resources, China University of Geosciences, Beijing, 100083, PR China
| | - Tongshuai Wang
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing, 100083, PR China; School of Earth Sciences and Resources, China University of Geosciences, Beijing, 100083, PR China; China Household Elect Appliance Res Inst CHEARDI, Beijing, 100053, PR China
| | - Congyi Wu
- School of Science, China University of Geosciences, Beijing, 100083, PR China
| | - Wei Tang
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing, 100083, PR China; School of Earth Sciences and Resources, China University of Geosciences, Beijing, 100083, PR China
| | - Jiawei Chen
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing, 100083, PR China; School of Earth Sciences and Resources, China University of Geosciences, Beijing, 100083, PR China.
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Wang Y, Chen D, Zhang ZX, Zhou T, Zou JP. Singlet oxygen-dominated activation of peroxymonosulfate by 3D hierarchical MnO2 nanostructures for degradation of organic pollutants in water: Surface defect and catalytic mechanism. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Jia D, Li Q, Hanna K, Mailhot G, Brigante M. Efficient removal of estrogenic compounds in water by Mn III-activated peroxymonosulfate: Mechanisms and application in sewage treatment plant water. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 288:117728. [PMID: 34247005 DOI: 10.1016/j.envpol.2021.117728] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 06/18/2021] [Accepted: 07/03/2021] [Indexed: 06/13/2023]
Abstract
In this paper, the degradation of three endocrine-disrupting chemicals (EDCs): bisphenol A (BPA), 17β-estradiol (E2) and 17α-ethinylestradiol (EE2) by manganite (γ-MnOOH) activated peroxymonosulfate (PMS) was investigated. Preliminary optimisation experiments showed that complete degradation of the three EDCs was achieved after 30 min of reaction using 0.1 g L-1 of γ-MnOOH and 2 mM of PMS. The degradation rate constants were determined to be 0.20, 0.22 and 0.15 min-1 for BPA, E2 and EE2, respectively. Combining radical scavenging approaches, Electron paramagnetic resonance (EPR) and X-ray photoelectron spectroscopy (XPS) analyses, we revealed for the first time that about 40% of EDCs degradation can be attributed to heterogeneous electron transfer reaction involving freshly generated Mn(IV), and 60% to sulfate radical degradation pathway. The influence of various inorganic ions on the γ-MnOOH/PMS system indicated that removal efficiency was slightly affected by chloride and carbonate ions, while nitrate and nitrite ions had negligible impacts. The application of γ-MnOOH/PMS system in real sewage treatment plant water (STPW) showed that degradation rate constants of EDCs decreased to 0.035-0.048 min-1 and complete degradation of the three EDCs after 45 min. This study provides new insights into the reactivity of combined γ-MnOOH and PMS, and opens new ways for the application of Mn-bearing species in wastewater treatment technologies.
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Affiliation(s)
- Daqing Jia
- Université Clermont Auvergne, CNRS, Clermont Auvergne INP SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, F-63000, Clermont-Ferrand, France
| | - Qinzhi Li
- Univ. Rennes, École Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR6226, F-35000, Rennes, France
| | - Khalil Hanna
- Univ. Rennes, École Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR6226, F-35000, Rennes, France; Institut Universitaire de France (IUF), MESRI, 1 rue Descartes, 75231, Paris, France
| | - Gilles Mailhot
- Université Clermont Auvergne, CNRS, Clermont Auvergne INP SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, F-63000, Clermont-Ferrand, France
| | - Marcello Brigante
- Université Clermont Auvergne, CNRS, Clermont Auvergne INP SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, F-63000, Clermont-Ferrand, France.
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Liu J, An F, Li M, Yang L, Wan J, Zhang S. Efficient Degradation of 2,4-Dichlorophenol on Activation of Peroxymonosulfate Mediated by MnO 2. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2021; 107:255-262. [PMID: 33554277 DOI: 10.1007/s00128-021-03109-7] [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: 10/03/2020] [Accepted: 01/08/2021] [Indexed: 06/12/2023]
Abstract
Sulfate radical based-advanced oxidation process has received increasing interest in the remediation of wastewater and contaminated soil. In this study, degradation of 2, 4-dichlorophenol (2, 4-DCP) was investigated over peroxymonosulfate (PMS) activation by MnO2, which was prepared by liquid-phase oxidation method. The prepared MnO2 was characterized by transition electron microscopy, X-ray diffraction, N2 adsorption-desorption, and X-ray photoelectron spectroscopy. Characterization results showed that α-MnO2 exhibited the highest surface area and Mn (III) content. The PMS activation by MnO2 in 2, 4-DCP degradation followed the order of α-MnO2 > γ-MnO2 > β-MnO2, which is dependent on the properties of MnO2 including crystal structure, surface area and Mn (III) content. Influences of initial concentration of 2, 4-DCP, PMS and MnO2 dosage, pH and co-existing inorganic ions on the degradation were examined. Electron paramagnetic resonance (EPR) and quenching experiments with ethanol and tert-butanol suggested that sulfate radicals were the dominant radicals in the process. Findings in this study indicated that α-MnO2 was an attractive catalyst for activation of PMS to degrade 2, 4-DCP in aqueous solution.
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Affiliation(s)
- Jingliang Liu
- Ministry of Ecology and Environment of the People's Republic of China, Nanjing Institute of Environmental Sciences, Nanjing, 210042, China
- School of Environmental Science, Nanjing XiaoZhuang University, Nanjing, 211171, China
| | - Fengxia An
- State Power Environmental Protection Research Institute Co. Ltd., Nanjing, 210031, China
| | - Mei Li
- Ministry of Ecology and Environment of the People's Republic of China, Nanjing Institute of Environmental Sciences, Nanjing, 210042, China
| | - Lu Yang
- Ministry of Ecology and Environment of the People's Republic of China, Nanjing Institute of Environmental Sciences, Nanjing, 210042, China
| | - Jinzhong Wan
- Ministry of Ecology and Environment of the People's Republic of China, Nanjing Institute of Environmental Sciences, Nanjing, 210042, China
| | - Shengtian Zhang
- Ministry of Ecology and Environment of the People's Republic of China, Nanjing Institute of Environmental Sciences, Nanjing, 210042, China.
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7
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Xu X, Zhang Y, Zhou S, Huang R, Huang S, Kuang H, Zeng X, Zhao S. Activation of persulfate by MnOOH: Degradation of organic compounds by nonradical mechanism. CHEMOSPHERE 2021; 272:129629. [PMID: 33486458 DOI: 10.1016/j.chemosphere.2021.129629] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 12/29/2020] [Accepted: 01/11/2021] [Indexed: 06/12/2023]
Abstract
Advanced oxidation processes (AOPs) based on persulfate (PS) has attracted great attention due to its high efficiency for degradation of organic pollutants. Manganese-based materials have been considered as the desirable catalysts for in-situ chemical oxidation since they are abundant in the earth's crust and environment-friendly. In this study, manganese oxyhydroxide (MnOOH) was used as an activator for PS to degrade p-chloroaniline (PCA) from wastewater. The effects of MnOOH dosage, PS dosage and initial pH on PCA degradation performance were studied. Experimental results showed that PCA degradation efficiency was enhanced by higher MnOOH and PS addition, and the degradation efficiency was slightly inhibited as the initial pH increased from 3 to 9. MnOOH showed excellent stability and reusability when used as the activator of PS. In addition, a comprehensive study was conducted to determine the PS activation mechanism. The results revealed that PS activation by MnOOH followed a nonradical mechanism. No 1O2 was generated, and the main active substance in the reaction was the activated PS molecule on the surface of MnOOH. The hydroxyl group on the catalyst surface acted as a bridge connecting PS and the catalyst, leading to the activation of PS. The intermediates during PCA degradation were also analyzed, and three possible degradation pathways of PCA were proposed. This study expects to deepen the understanding of the PS activation mechanism by manganese oxide, and provides technical support for the practical application of AOPs of manganese-based materials for wastewater treatment.
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Affiliation(s)
- Xiaomin Xu
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, 510640, China
| | - Yongqing Zhang
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, 510640, China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, China; School of Environment and Energy, State Key Laboratory of Pulp and Paper, South China University of Technology, Guangzhou, Guangzhou, 510006, China.
| | - Shaoqi Zhou
- Guizhou Academy of Sciences, Shanxi Road 1, Guiyang, 550001, China
| | - Renfeng Huang
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, 510640, China
| | - Shaobin Huang
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, 510640, China
| | - Hainan Kuang
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, 510640, China
| | - Xianlin Zeng
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, 510640, China
| | - Shuaifei Zhao
- Institute for Frontier Materials, Deakin University, Geelong, Victoria, 3216, Australia
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8
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Abstract
One of the most commonly produced industrial chemicals worldwide, bisphenol A (BPA), is used as a precursor in plastics, resins, paints, and many other materials. It has been proved that BPA can cause long-term adverse effects on ecosystems and human health due to its toxicity as an endocrine disruptor. In this study, we developed an integrated MnO2/UV/persulfate (PS) process for use in BPA photocatalytic degradation from water and examined the reaction mechanisms, degradation pathways, and toxicity reduction. Comparative tests using MnO2, PS, UV, UV/MnO2, MnO2/PS, and UV/PS processes were conducted under the same conditions to investigate the mechanism of BPA catalytic degradation by the proposed MnO2/UV/PS process. The best performance was observed in the MnO2/UV/PS process in which BPA was completely removed in 30 min with a reduction rate of over 90% for total organic carbon after 2 h. This process also showed a stable removal efficiency with a large variation of pH levels (3.6 to 10.0). Kinetic analysis suggested that 1O2 and SO4•− played more critical roles than •OH for BPA degradation. Infrared spectra showed that UV irradiation could stimulate the generation of –OH groups on the MnO2 photocatalyst surface, facilitating the PS catalytic degradation of BPA in this process. The degradation pathways were further proposed in five steps, and thirteen intermediates were identified by gas chromatography-mass spectrometry. The acute toxicity was analyzed during the treatment, showing a slight increase (by 3.3%) in the first 30 min and then a decrease by four-fold over 2 h. These findings help elucidate the mechanism and pathways of BPA degradation and provide an effective PS catalytic strategy.
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Yang R, Fan Y, Ye R, Tang Y, Cao X, Yin Z, Zeng Z. MnO 2 -Based Materials for Environmental Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2004862. [PMID: 33448089 DOI: 10.1002/adma.202004862] [Citation(s) in RCA: 112] [Impact Index Per Article: 37.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/31/2020] [Indexed: 06/12/2023]
Abstract
Manganese dioxide (MnO2 ) is a promising photo-thermo-electric-responsive semiconductor material for environmental applications, owing to its various favorable properties. However, the unsatisfactory environmental purification efficiency of this material has limited its further applications. Fortunately, in the last few years, significant efforts have been undertaken for improving the environmental purification efficiency of this material and understanding its underlying mechanism. Here, the aim is to summarize the recent experimental and computational research progress in the modification of MnO2 single species by morphology control, structure construction, facet engineering, and element doping. Moreover, the design and fabrication of MnO2 -based composites via the construction of homojunctions and MnO2 /semiconductor/conductor binary/ternary heterojunctions is discussed. Their applications in environmental purification systems, either as an adsorbent material for removing heavy metals, dyes, and microwave (MW) pollution, or as a thermal catalyst, photocatalyst, and electrocatalyst for the degradation of pollutants (water and gas, organic and inorganic) are also highlighted. Finally, the research gaps are summarized and a perspective on the challenges and the direction of future research in nanostructured MnO2 -based materials in the field of environmental applications is presented. Therefore, basic guidance for rational design and fabrication of high-efficiency MnO2 -based materials for comprehensive environmental applications is provided.
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Affiliation(s)
- Ruijie Yang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
| | - Yingying Fan
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
| | - Ruquan Ye
- Department of Chemistry, State Key Lab of Marine Pollution, City University of Hong Kong, Hong Kong, 999077, P. R. China
| | - Yuxin Tang
- College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Xiehong Cao
- College of Materials Science and Engineering, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou, Zhejiang, 310014, P. R. China
| | - Zongyou Yin
- Research School of Chemistry, Australian National University, Canberra, ACT, 2601, Australia
| | - Zhiyuan Zeng
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
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Liu Y, Miao W, Feng Y, Fang X, Li Q, Du N, Wang D, Mao S. Enhanced peroxydisulfate oxidation via Cu(III) species with a Cu-MOF-derived Cu nanoparticle and 3D graphene network. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123691. [PMID: 32846261 DOI: 10.1016/j.jhazmat.2020.123691] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 08/06/2020] [Accepted: 08/10/2020] [Indexed: 06/11/2023]
Abstract
The contribution of Cu(III) produced during heterogeneous peroxydisulfate (PDS) activation to pollutant removal is largely unknown. Herein, a composite catalyst is prepared with Cu-based metal organic framework (Cu-MOF) derived Cu nanoparticles decorated in a three-dimensional reduced graphene oxide (3D RGO) network. The 3D RGO network overcomes the aggregation of nanosized zero-valent copper and reduces the copper consumption during the PDS activation reaction. The Cu/RGO catalyst exhibits high catalytic activity for 2,4-dichlorophenol (2,4-DCP) degradation in a wide pH range of 3-9, with a low Cu dosage that is only 0.075 times that of previous reports with zero-valent copper. Moreover, a high mineralization ratio (69.2 %) of 2,4-DCP is achieved within 30 min, and the Cu/RGO catalyst shows high reactivity toward aromatic compounds with hydroxyl and chlorinated groups. Unlike normal sulfate radical-based advanced oxidation, alcohols show negligible impacts on the reaction, suggesting that Cu(III), rather than SO4- and OH, dominates the degradation process. We believe that PDS activation by 3D Cu/RGO, with Cu(III) as the main active species, provides new insights in selective organic pollutant removal in wastewater treatment.
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Affiliation(s)
- Ying Liu
- College of Environmental Science and Engineering, Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Wei Miao
- College of Environmental Science and Engineering, Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Yong Feng
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China
| | - Xian Fang
- College of Environmental Science and Engineering, Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Qiuju Li
- College of Environmental Science and Engineering, Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Ningjie Du
- College of Environmental Science and Engineering, Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Dandan Wang
- College of Environmental Science and Engineering, Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Shun Mao
- College of Environmental Science and Engineering, Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China.
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Guo PC, Qiu HB, Yang CW, Zhang X, Shao XY, Lai YL, Sheng GP. Highly efficient removal and detoxification of phenolic compounds using persulfate activated by MnO x@OMC: Synergistic mechanism and kinetic analysis. JOURNAL OF HAZARDOUS MATERIALS 2021; 402:123846. [PMID: 33254818 DOI: 10.1016/j.jhazmat.2020.123846] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 07/26/2020] [Accepted: 08/25/2020] [Indexed: 06/12/2023]
Abstract
Persulfate-based advanced oxidation technology exhibits great potential for hazardous organic pollutant removal from wastewater. Acceleration of pollutant degradation needs to be elucidated, particularly for heterogeneous catalytic systems. In this study, manganese oxide ordered mesoporous carbon composites (MnOx@OMC) were prepared by nano-casting method and used for persulfate activation to degrade phenol. Kinetics analysis indicate that the rate of phenol degradation using MnOx@OMC composites was improved by 34.9 folds relative to that using a mixture of MnOx and OMC. The phenol toxicity towards Caenorhabditis elegans could be totally reduced within 8 min. The different roles of MnOx and OMC in persulfate activation were confirmed to validate their synergistic effect. MnOx provided major active sites for persulfate activation in accordance with the surface Mn3+/Mn4+ cycle to induce SO4•- radicals. The OMC matrix provided the adsorption sites to enrich phenol molecules on the catalytic surface and promote the interfacial electron transfer process for persulfate activation. Moreover, a novel kinetic model with two distinct kinetic stages was established to verify the effects of phenol and persulfate on phenol removal.
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Affiliation(s)
- Pu-Can Guo
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry, University of Science and Technology of China, Hefei, 230026, China; Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Hai-Bin Qiu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Chuan-Wang Yang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Xin Zhang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry, University of Science and Technology of China, Hefei, 230026, China; Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Xin-Yue Shao
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Yang-Li Lai
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Guo-Ping Sheng
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry, University of Science and Technology of China, Hefei, 230026, China; Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, 230026, China.
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12
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Liu D, Li Q, Hou J, Zhao H. Mixed-valent manganese oxide for catalytic oxidation of Orange II by activation of persulfate: heterojunction dependence and mechanism. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00087j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The coexistence of aliovalent cations in manganese oxide catalysts with a suitable mole ratio accelerates the activation process of persulfate for the degradation of organic pollutants.
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Affiliation(s)
- Daoqing Liu
- Key Laboratory of Water and Sediment Sciences (Ministry of Education)
- College of Environmental Sciences and Engineering
- Peking University
- Beijing 100871
- People's Republic of China
| | - Qianwei Li
- State Key Laboratory of Heavy Oil Processing
- Beijing Key Laboratory of Oil and Gas Pollution Control
- China University of Petroleum-Beijing
- Beijing 102249
- China
| | - Jinbao Hou
- College of Chemical Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Huazhang Zhao
- Key Laboratory of Water and Sediment Sciences (Ministry of Education)
- College of Environmental Sciences and Engineering
- Peking University
- Beijing 100871
- People's Republic of China
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13
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Zhou H, Zhu X, Chen B. Magnetic biochar supported α-MnO 2 nanorod for adsorption enhanced degradation of 4-chlorophenol via activation of peroxydisulfate. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 724:138278. [PMID: 32247983 DOI: 10.1016/j.scitotenv.2020.138278] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/19/2020] [Accepted: 03/26/2020] [Indexed: 05/22/2023]
Abstract
A novel magnetic catalytic composite (MBM) was developed by compositing α-MnO2 with a magnetic biochar containing Fe3O4. XRD and EDS confirmed the crystalline structure and the chemical composition of MBM, while the one-dimensional α-MnO2 nanorods were observed on MBM by SEM. 4-chlorophenol as a typical toxic chlorinated organic compound was selected as the model pollutant. Even the MBM composite (MnO2 content: 0.2 g/L) needed the same time (120 min) as the pure α-MnO2 nanorods (0.2 g/L) to completely remove the 4-chlorophenol (10 mg/L) with overdosed peroxydisulfate (PDS), MBM indicated faster pollutant removal rate than the pure α-MnO2 nanorods in the first 100 min. It is possible that the adsorption of 4-chlorophenol by biochar might shorten the migration pathway of the generated active species to the pollutants, resulting the boosted removal rate. MBM was stable in the neutral environment which was desirable for the efficient pollutant removal. Both the radical quenching tests and the EPR spectra identified the main active specie generated by activation of PDS through MBM was singlet oxygen possibly generated by recombination of superoxide ions from the metastable manganese intermediates at neutral pH. TOC data of the effluent ensured 63.5% of the pollutant molecules were completely mineralized after the degradation. The applied magnetic field could recover MBM easily for reuse. This work shed lights on the preparation of highly efficient and environmentally friendly catalytic composites for PDS activation in persistent pollutant removal.
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Affiliation(s)
- Hao Zhou
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China.
| | - Xiaoying Zhu
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China.
| | - Baoliang Chen
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China.
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14
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Mousali E, Zanjanchi MA. Loading of nickel phthalocyanine onto functionalized mesoporous KIT-6 solid support: an efficient visible photocatalyst for the degradation of 2,4-dichlorophenol. REACTION KINETICS MECHANISMS AND CATALYSIS 2020. [DOI: 10.1007/s11144-020-01790-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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15
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Chen C, Xie M, Kong L, Lu W, Feng Z, Zhan J. Mn 3O 4 nanodots loaded g-C 3N 4 nanosheets for catalytic membrane degradation of organic contaminants. JOURNAL OF HAZARDOUS MATERIALS 2020; 390:122146. [PMID: 32007861 DOI: 10.1016/j.jhazmat.2020.122146] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 01/08/2020] [Accepted: 01/19/2020] [Indexed: 06/10/2023]
Abstract
Peroxymonosulfate (PMS) activation by heterogeneous catalysts has been widely investigated to remove organic contaminants. Nevertheless, the technology is restricted to the bench-scale batch system. For practical applications, a supported catalyst design based on a reactor configuration with catalyst recovery is the need for future development. In this study, Mn3O4 nanodots-g-C3N4 nanosheets (Mn3O4/CNNS) composites were prepared via a facile hydrothermal method. The micro-structures and compositions of composites were investigated by a series of characterization methods. It was found that the Mn3O4 nanodots (5-10 nm) were distributed uniformly over the CNNS. When the added amount of CNNS was 150 mg during the synthesis process, a composite named as Mn3O4/CNNS-150 was obtained, which exhibited the best performance on PMS activation for 4-chlorophenol (4-CP) removal. The Mn3O4/CNNS-150@PTFE membrane was synthesized by facile vacuum filtration. The catalytic membrane was applied in filtration experiments for the degradation of different contaminants. The stability tests revealed excellent stability of the catalytic membrane. The redox circles of Mn(IV)/Mn(III)/Mn(II) on the Mn3O4 surface were the main source of activated PMS and a possible activation mechanism in the reaction system was provided. This study is of great significance for the development of novel catalytic membranes with PMS activation.
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Affiliation(s)
- Congcong Chen
- Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, Jinan, 250100, PR China
| | - Meng Xie
- Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Analysis and Test Centre, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China
| | - Lingshuai Kong
- Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, Jinan, 250100, PR China
| | - Wenhui Lu
- Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, Jinan, 250100, PR China
| | - Zhenyu Feng
- Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, Jinan, 250100, PR China
| | - Jinhua Zhan
- Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, Jinan, 250100, PR China.
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16
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Niu L, Xian G, Long Z, Zhang G, Zhou N. MnCeO x/diatomite catalyst for persulfate activation to degrade organic pollutants. J Environ Sci (China) 2020; 89:206-217. [PMID: 31892392 DOI: 10.1016/j.jes.2019.09.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 09/10/2019] [Accepted: 09/12/2019] [Indexed: 06/10/2023]
Abstract
Persulfate (PS)-based oxidation technologies are attracting increasing attentions in water treatment due to their high efficiency and stability. In this study, a novel diatomite supported MnCeOx composite (MnCeOx/diatomite) was prepared and characterized for activation of PS to degrade organic pollutants. Results indicated that diatomite not only dispersed MnCeOx and increased the specific surface area of catalyst, but also improved the low-valence metal site (Mn2+ and Ce3+) and reactive oxygen species site (-OH) of MnCeOx, thus enhancing the activities of MnCeOx. MnCeOx/diatomite/PS showed high efficiency for multiple dyes and pharmaceutical pollutants. Constant rate (k) of MnCeOx/diatomite (kMnCeOx/diatomite) was three times higher than the sum of constant rate of MnCeOx (kMnCeOx) and constant rate of diatomite (kdiatomite). In addition, MnCeOx/diatomite showed wide pH application (5-9). Cl- and NO32- had no effect while SO42- and humid acid had slightly negative effects on MnCeOx/diatomite/PS system. Moreover, MnCeOx/diatomite showed good reusability and stability. Mechanism analyses indicated that electron transfer of Mn and Ce attributed to the activation of PS and oxygen to produce free radicals. SO4-, OH and O2- on the surface of catalyst were the main active free radicals to attack pollutants.
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Affiliation(s)
- Lijun Niu
- School of Environment and Natural Resource, Renmin University of China, Beijing 100872, China
| | - Guang Xian
- School of Environment and Natural Resource, Renmin University of China, Beijing 100872, China
| | - Zeqing Long
- School of Environment and Natural Resource, Renmin University of China, Beijing 100872, China
| | - Guangming Zhang
- School of Environment and Natural Resource, Renmin University of China, Beijing 100872, China.
| | - Ningyu Zhou
- Department of Military Installations, Army Lorange Gistics University of PLA, Chongqing 401311, China.
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17
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He H, Hu L, Zeng J, Huang Y, He C, Zhang Q, Zhang F, Shu D. Activation of persulfate by CuO-sludge-derived carbon dispersed on silicon carbide foams for odorous methyl mercaptan elimination: identification of reactive oxygen species. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:1224-1233. [PMID: 30155638 DOI: 10.1007/s11356-018-3038-3] [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: 04/01/2018] [Accepted: 08/22/2018] [Indexed: 06/08/2023]
Abstract
In this work, sludge-derived carbon (SC) was innovatively integrated with copper oxide (CuO) on macroporous silicon carbide foams to construct a distinctive catalyst (CuO/SC) with strong catalytic activity, which can effectively activate persulfate (PS) for the removal of methyl mercaptan (CH3SH). The structure and morphology of CuO/SC were investigated by means of XRD, SEM, and EDS. The effects of initial pH values, copper contents, PS dosages, and flow rates on CH3SH removal were also investigated. Under optimal condition, more than 90% of CH3SH was removed by CuO/SC-PS combined system within 10-min reaction due to the synergistic function of CuO and SC. More importantly, on the basis of reactive species trapping and ESR spectroscopy, it is revealed that the responsible reactive species for catalytic CH3SH composition were ·SO4-, ·OH, 1O2, and ·O2- in CuO/SC-PS system. Finally, the possible PS activation scheme of CuO/SC samples was proposed.
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Affiliation(s)
- Huanjunwa He
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Lingling Hu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Jiawei Zeng
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Yajing Huang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Chun He
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China.
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou, 510275, China.
| | - Qing Zhang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Feng Zhang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Dong Shu
- Key Lab of Technology on Electrochemical Energy Storage and Power Generation in Guangdong Universities, School of Chemistry and Environment, South China Normal University, Guangzhou, 510006, China.
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18
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Huang J, Zhang H. Mn-based catalysts for sulfate radical-based advanced oxidation processes: A review. ENVIRONMENT INTERNATIONAL 2019; 133:105141. [PMID: 31520961 DOI: 10.1016/j.envint.2019.105141] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 08/08/2019] [Accepted: 08/28/2019] [Indexed: 06/10/2023]
Abstract
Sulfate radical-based advanced oxidation processes (AOPs) have drawn increasing attention during the past two decades, and Mn-based materials have been proven to be effective catalysts for activating peroxymonosulfate (PMS) and peroxydisulfate (PDS) to degrade many contaminants. This article presents a comprehensive review of various Mn-based materials to activate PMS and PDS. The activation mechanisms of different Mn-based catalysts (i.e., Mn oxides MnOx, MnOx hybrids, and MnOx‑carbonaceous material composites) were first summarized and discussed in detail. Besides the commonly reported free radicals (SO4-• and •OH), non-radical mechanisms such as singlet oxygen and direct electron transfer have also been discovered for selected materials. The effects of pH, inorganic ions, natural organic matter (NOM), dissolved oxygen content, temperature, and the crystallinity of the materials on the catalytic reactivity were also discussed. Then, important instrumentations and technologies employed to characterize Mn-based materials and to understand the reaction mechanisms were concisely summarized. Three common overlooks in the experimental designs for examining the PMS/PDS-MnOx systems were also discussed. Finally, future research directions were suggested to further improve the technology and to provide a guidance to develop cost-effective Mn-based materials to activate PMS/PDS.
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Affiliation(s)
- Jianzhi Huang
- Department of Civil Engineering, Case Western Reserve University, Cleveland, OH 44106, United States
| | - Huichun Zhang
- Department of Civil Engineering, Case Western Reserve University, Cleveland, OH 44106, United States.
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19
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Peng W, Zhang K, Zong F, Chen C, Fang Z. Enhancement of H 2O 2 decomposition by the synergistic effect on CuO-MnFe 2O 4 nanoparticles for sulfamethoxazole degradation over a wide pH range. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2019.1656639] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Wei Peng
- Department of Military Facilities, Army Logistics University of PLA, Chongqing, China
| | - Kai Zhang
- Department of Military Facilities, Army Logistics University of PLA, Chongqing, China
| | - Fuxing Zong
- Department of Military Facilities, Army Logistics University of PLA, Chongqing, China
| | - Chao Chen
- Department of Military Facilities, Army Logistics University of PLA, Chongqing, China
| | - Zhendong Fang
- Department of Military Facilities, Army Logistics University of PLA, Chongqing, China
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20
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Zhao Y, Li Q, Ren H, Zhou R. Activation of persulfate by magnetic MnFe2O4-bentonite for catalytic degradation of 2,4-dichlorophenol in aqueous solutions. Chem Res Chin Univ 2017. [DOI: 10.1007/s40242-017-6485-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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