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Zouari M, Hribernik S, Marrot L, Tzolov M, DeVallance DB. Manganese dioxide-coated biocarbon for integrated adsorption-photocatalytic degradation of formaldehyde in indoor conditions. Heliyon 2024; 10:e29993. [PMID: 38694080 PMCID: PMC11061683 DOI: 10.1016/j.heliyon.2024.e29993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/03/2024] [Accepted: 04/18/2024] [Indexed: 05/03/2024] Open
Abstract
Formaldehyde is a common indoor air pollutant with hazardous effects on human health. This study investigated the efficiency of biocarbon (BC) functionalized with variable contents of MnO2 for formaldehyde removal in ambient conditions via integrated adsorption-photocatalytic degradation technology. The sample with the highest formaldehyde removal potential was used to prepare a functional coating made of acrylic binder mixed with 20 wt% of the particles and applied on beech (Fagus sylvatica L) substrate. SEM images showed that MnO2 was deposited around and inside the pores of the BC. EDX spectra indicated the presence of Mn peaks and increased content of oxygen in the doped BC compared to pure BC, which indicated the successful formation of MnO2. Raman spectra revealed that the disorder in the BC's structure increased with increasing MnO2 loadings. FTIR spectra of BC-MnO2 samples displayed additional peaks compared to the BC spectrum, which were attributed to MnO vibrations. Moreover, the deposition of increased MnO2 loadings decreased the porosity of the BC due to pores blockage. The BC sample containing 8 % Mn exhibited the highest formaldehyde removal efficiency in 8 h, which was 91 %. A synergetic effect between BC and MnO2 was observed. The formaldehyde removal efficiency and capacity of the coating reached 43 % and 6.1 mg/m2, respectively, suggesting that the developed coating can be potentially used to improve air quality in the built environment.
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Affiliation(s)
- Mariem Zouari
- InnoRenew CoE, Livade 6a, 6310, Izola, Slovenia
- Faculty of Mathematics, Natural Sciences, and Information Technologies, University of Primorska, Muzejski trg 2, 6000, Koper, Slovenia
| | - Silvo Hribernik
- Faculty of Electrical Engineering and Computer Science, University of Maribor, Koroška cesta 46, SI-2000, Maribor, Slovenia
| | - Laetitia Marrot
- FRISSBE, Slovenian National Building and Civil Engineering Institute (ZAG), 1000, Ljubljana, Slovenia
| | - Marian Tzolov
- College of Science and Technology, Commonwealth University of Pennsylvania, 401 North Fairview Street, Lock Haven, PA, 17745, United States
| | - David B. DeVallance
- College of Science and Technology, Commonwealth University of Pennsylvania, 401 North Fairview Street, Lock Haven, PA, 17745, United States
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2
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Zhang J, Lu Q, Ni R, Shi Y, Duan S, Ma J, Hu Y, Hu W, Ke Q, Zhao Y. Spiral grass inspired eco-friendly zein fibrous membrane for multi-efficient air purification. Int J Biol Macromol 2023; 245:125512. [PMID: 37353121 DOI: 10.1016/j.ijbiomac.2023.125512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 06/07/2023] [Accepted: 06/20/2023] [Indexed: 06/25/2023]
Abstract
Air pollution, one of the severest threats to public health, may lead to cardiovascular and respiratory illnesses. In order to cope with the deteriorating air pollutant, there is an increasing demand for filters with high purification efficiency, but it's tough to strike a balance between efficiency and resistance. Fabricating an eco-friendly fibrous filter which can capture both PM2.5 and gaseous chemical hazards with high efficiency but under ultra-low resistance is a long-term challenge. Herein, inspired by the interesting ribbon shape of spiral grass, a green and robust 3D nonwoven membrane with controllable hierarchical structure made of self-curved zein nanofibers modified by zeolitic imidazolate framework-8 (ZIF-8) via bi-solvent electrospinning and fumigation welding method was fabricated. The obtained ZIF-8 modified zein membranes showed extraordinary overall performance with high PM2.5 removal efficiency (99.04 %) at a low stress drop (54.87 Pa), first-rate formaldehyde removal efficiency (98.8 %) and excellent photocatalytic antibacterial. In addition, the relatively weak mechanical properties of zein fibrous membranes have been improved via solvent fumigation welding of the joint zein fibers. This study provides a green and convenient insight to the manufacturing of environmentally-friendly zein fibrous membranes with high filtration efficiency, low air resistance and high formaldehyde removal for sustainable air remediation.
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Affiliation(s)
- Jiawen Zhang
- Shanghai Frontiers Science Center of Advanced Textiles, Donghua University, Shanghai 201620, China; Engineering Research Center of Technical Textiles, Ministry of Education, Donghua University, Shanghai 201620, China
| | - Qianzhi Lu
- Shanghai Frontiers Science Center of Advanced Textiles, Donghua University, Shanghai 201620, China; Engineering Research Center of Technical Textiles, Ministry of Education, Donghua University, Shanghai 201620, China
| | - Ruiyan Ni
- Shanghai Frontiers Science Center of Advanced Textiles, Donghua University, Shanghai 201620, China; Engineering Research Center of Technical Textiles, Ministry of Education, Donghua University, Shanghai 201620, China
| | - Yihan Shi
- Shanghai Frontiers Science Center of Advanced Textiles, Donghua University, Shanghai 201620, China; Engineering Research Center of Technical Textiles, Ministry of Education, Donghua University, Shanghai 201620, China
| | - Shuxia Duan
- Henan Key Laboratory of Medical and Protective Products, China
| | - Jiajia Ma
- Shanghai Frontiers Science Center of Advanced Textiles, Donghua University, Shanghai 201620, China; Engineering Research Center of Technical Textiles, Ministry of Education, Donghua University, Shanghai 201620, China
| | - Yong Hu
- Shanghai Frontiers Science Center of Advanced Textiles, Donghua University, Shanghai 201620, China; Engineering Research Center of Technical Textiles, Ministry of Education, Donghua University, Shanghai 201620, China
| | - Wenfeng Hu
- Engineering Research Center of Technical Textiles, Ministry of Education, Donghua University, Shanghai 201620, China; School of Fashion Engineering Central Laboratory, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Qinfei Ke
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, China
| | - Yi Zhao
- Shanghai Frontiers Science Center of Advanced Textiles, Donghua University, Shanghai 201620, China; Engineering Research Center of Technical Textiles, Ministry of Education, Donghua University, Shanghai 201620, China.
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3
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Hua Y, Ahmadi Y, Kim KH. Thermocatalytic Degradation of Gaseous Formaldehyde Using Transition Metal-Based Catalysts. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023:e2300079. [PMID: 37114840 PMCID: PMC10375094 DOI: 10.1002/advs.202300079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 03/24/2023] [Indexed: 06/19/2023]
Abstract
Formaldehyde (HCHO: FA) is one of the most abundant but hazardous gaseous pollutants. Transition metal oxide (TMO)-based thermocatalysts have gained much attention in its removal due to their excellent thermal stability and cost-effectiveness. Herein, a comprehensive review is offered to highlight the current progress in TMO-based thermocatalysts (e.g., manganese, cerium, cobalt, and their composites) in association with the strategies established for catalytic removal of FA. Efforts are hence made to describe the interactive role of key factors (e.g., exposed crystal facets, alkali metal/nitrogen modification, type of precursors, and alkali/acid treatment) governing the catalytic activity of TMO-based thermocatalysts against FA. Their performance has been evaluated further between two distinctive operation conditions (i.e., low versus high temperature) based on computational metrics such as reaction rate. Accordingly, the superiority of TMO-based composite catalysts over mono- and bi-metallic TMO catalysts is evident to reflect the abundant surface oxygen vacancies and enhanced FA adsorptivity of the former group. Finally, the present challenges and future prospects for TMO-based catalysts are discussed with respect to the catalytic oxidation of FA. This review is expected to offer valuable information to design and build high performance catalysts for the efficient degradation of volatile organic compounds.
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Affiliation(s)
- Yongbiao Hua
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul, 04763, South Korea
| | - Younes Ahmadi
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul, 04763, South Korea
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul, 04763, South Korea
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4
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Shi L, Zhou X, Guo Y, Li Y, Yan C, Han Q, Zhang L, Zhang W. Designing of 3D MnO 2-graphene catalyst on sponge for abatement temperature removal of formaldehyde. JOURNAL OF HAZARDOUS MATERIALS 2023; 441:129836. [PMID: 36088878 DOI: 10.1016/j.jhazmat.2022.129836] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 08/14/2022] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
The Mn-based catalysts, with low cost and high activity, are believed to be the effective composites for eliminating in-door formaldehyde (HCHO), while the powdered form nanosized catalysts are hardly to apply for practical application. Herein, hetero-structure of nanosheets manganese oxide (MnO2) encapsulating N-doping graphene sphere (GS) were deposited in network-like sponge for constructing 3D catalyst. The prepared MnO2-GS-Sponge composite catalyst exhibited excellent performance for removing HCHO at room temperature compared with GS and commercial MnO2. The MnO2-GS with larger specific surface area (209.1 m2·g-1) was dispersed evenly in 3D network of sponge, which facilitated exposing more activate sites and achieving fast transport kinetics accelerating catalytic reaction for converting 97.1 % of 100 ppm of HCHO continuously to CO2 for 120 h. Moreover, rely on the chemisorption of amino groups on N-doping GS surface, HCHO could be enriched even at low concentrations and efficient elimination (from 1000 ppb to12 ppb, at 35 ℃ in 48 h). The average oxidation state and infrared spectra analysis suggested that abundant oxygen vacancies on MnO2-GS-Sponge could be identified as surface-active sites of converting HCHO into the intermediates of dioxymethylene and formate. This work might inspire the designing 3D composite material for potential application in other fields of environmental engineering or energy industrial.
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Affiliation(s)
- Lei Shi
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China; Key Laboratory for Advanced Materials, Feringa Nobel Prize Scientist Joint Research Centre, Institute of Applied Chemistry, East China University of Science and Technology, No.130 Meilong Road, Shanghai 200237, PR China
| | - Xudong Zhou
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
| | - Yujie Guo
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
| | - Yunyu Li
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
| | - Chenxu Yan
- Key Laboratory for Advanced Materials, Feringa Nobel Prize Scientist Joint Research Centre, Institute of Applied Chemistry, East China University of Science and Technology, No.130 Meilong Road, Shanghai 200237, PR China
| | - Qifeng Han
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
| | - Lingfan Zhang
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China.
| | - Wenqing Zhang
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China.
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5
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Hu Y, Ni R, Lu Q, Qiu X, Ma J, Wang Y, Zhao Y. Functionalized multi-effect air filters with bimodal fibrous structure prepared by direction growth of keratin nanofibers. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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6
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Zheng R, Lin Q, Meng L, Zhang C, Zhao L, Fu M, Ren J. Flexible phosphorus-doped activated carbon fiber paper in-situ loading of CuO for degradation of phenol. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121619] [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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7
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NiCo-LDH@MnO2 nanocages as advanced catalysts for efficient formaldehyde elimination. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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8
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Couzon N, Dhainaut J, Campagne C, Royer S, Loiseau T, Volkringer C. Porous textile composites (PTCs) for the removal and the decomposition of chemical warfare agents (CWAs) – A review. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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9
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Dai Z, Yu J, Si Y. Gradient Porous Structured MnO 2-Nonwoven Composite: A Binder-Free Polymeric Air Filter for Effective Room-Temperature Formaldehyde Removal. Polymers (Basel) 2022; 14:polym14122504. [PMID: 35746080 PMCID: PMC9231320 DOI: 10.3390/polym14122504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/15/2022] [Accepted: 06/17/2022] [Indexed: 12/27/2022] Open
Abstract
Recently, MnO2-coated polymeric filters have shown promising performance in room-temperature formaldehyde abatement. However, a commonly known concern of MnO2/polymer composites is either MnO2 crystal encapsulation or weak adhesion. This work reports a low-cost high-throughput and green strategy to produce binder-free MnO2-nonwoven composite air filters. The production approach is energy saving and environmentally friendly, which combines MnO2 crystal coating on bicomponent polyolefin spunbond nonwovens and subsequent heat immobilizing of crystals, followed by the removal of weakly bonded MnO2. The binder-free MnO2-nonwoven composites show firm catalyst-fiber adhesion, a gradient porous structure, and excellent formaldehyde removal capability (94.5% ± 0.4%) at room temperature, and the reaction rate constant is 0.040 min−1. In contrast to the MnO2-nonwoven composites containing organic binders, the HCHO removal of binder-free filters increased by over 4%. This study proposes an alternative solution in producing catalyst/fabric composite filters for formaldehyde removal.
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Affiliation(s)
- Zijian Dai
- State Key Laboratory for Modifcation of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China;
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
| | - Jianyong Yu
- State Key Laboratory for Modifcation of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China;
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
- Correspondence: (J.Y.); (Y.S.)
| | - Yang Si
- State Key Laboratory for Modifcation of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China;
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
- Correspondence: (J.Y.); (Y.S.)
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10
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Low-Temperature Oxidation Removal of Formaldehyde Catalyzed by Mn-Containing Mixed-Oxide-Supported Bismuth Oxychloride in Air. Catalysts 2022. [DOI: 10.3390/catal12030262] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The Mn-containing mixed-oxide-supported bismuth oxychloride (BiOCl) catalysts were prepared by calcining their corresponding parent hydrotalcite supported BiOCl. The crystal structure of BiOCl was found to be intact during calcination, while significant differences appeared in the chemical state of Mn and the redox capacities of the catalysts before and after calcination. Compared to the hydrotalcite-supported catalysts, the mixed-oxide-supported BiOCl showed much higher catalytic performance in the oxidation removal of formaldehyde due to the synergetic catalysis of more surface oxygen vacancies and higher surface basicity. The complete removal of formaldehyde could be achieved at 70 °C, and the removal efficiency was maintained more than 90% for 21 h. A possible reaction mechanism was also proposed.
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11
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Yu J, Meng Z, Chi C, Gao X, Chen B, Zhu B, Qiao K. Low temperature pickling regeneration process for remarkable enhancement in Cu(II) adsorptivity over spent activated carbon fiber. CHEMOSPHERE 2021; 281:130868. [PMID: 34010720 DOI: 10.1016/j.chemosphere.2021.130868] [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: 10/14/2020] [Revised: 05/01/2021] [Accepted: 05/09/2021] [Indexed: 06/12/2023]
Abstract
In this paper, a simple and efficient regeneration technology of low-temperature pickling regeneration process is proposed for Cu(II)-adsorbed activated carbon fiber felts (ACFFs). The regeneration process mainly uses the strong oxidation of acidic regenerant above boiling point to regenerate ACFFs in a confined space. With no demand for high temperature and high pressure, the regeneration process achieves a high efficiency regeneration and a remarkable enhancement of Cu(II) adsorptivity simultaneously for Cu(II)-adsorbed ACFFs. After parameter optimization, the pickling temperature of 383 K, pickling time of 3 h and HNO3 concentration of 150 g/L are adopted as optimum process parameters for the reutilization of ACFFs. The regeneration rates of ACFFs in five cycles are maintained at 424.08%-829.59%. Analytical results show that the enhancement of Cu(II) adsorptivity is mainly caused by the remarkable enhancement of specific surface area (increased by 106.08%), micropore volume (increased by 102.17%) and more abundant surface chemical structure (particularly carboxyl and nitro group) after treated by the regeneration process.
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Affiliation(s)
- Junwei Yu
- Key Laboratory of Liquid-Solid Structural Evolution and Processing of Materials of Ministry of Education, State Key Laboratory of Crystal Materials, Shandong University, Jinan, Shandong, 250061, China; Carbon Fiber Engineering Research Center, School of Materials Science and Engineering, Shandong University, Jinan, 250061, China
| | - Ziyu Meng
- Key Laboratory of Liquid-Solid Structural Evolution and Processing of Materials of Ministry of Education, State Key Laboratory of Crystal Materials, Shandong University, Jinan, Shandong, 250061, China; Carbon Fiber Engineering Research Center, School of Materials Science and Engineering, Shandong University, Jinan, 250061, China
| | - Chong Chi
- Key Laboratory of Liquid-Solid Structural Evolution and Processing of Materials of Ministry of Education, State Key Laboratory of Crystal Materials, Shandong University, Jinan, Shandong, 250061, China; Carbon Fiber Engineering Research Center, School of Materials Science and Engineering, Shandong University, Jinan, 250061, China
| | - Xueping Gao
- Key Laboratory of Liquid-Solid Structural Evolution and Processing of Materials of Ministry of Education, State Key Laboratory of Crystal Materials, Shandong University, Jinan, Shandong, 250061, China; Carbon Fiber Engineering Research Center, School of Materials Science and Engineering, Shandong University, Jinan, 250061, China
| | - Baolei Chen
- Qingdao Huashijie Environment Technology Co., LTD, Qingdao, 266510, China
| | - Bo Zhu
- Key Laboratory of Liquid-Solid Structural Evolution and Processing of Materials of Ministry of Education, State Key Laboratory of Crystal Materials, Shandong University, Jinan, Shandong, 250061, China; Carbon Fiber Engineering Research Center, School of Materials Science and Engineering, Shandong University, Jinan, 250061, China
| | - Kun Qiao
- School of Mechanical, Electrical & Information Engineering Shandong University, Weihai, 264209, China.
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Wang Z, Jia H, Liu Z, Peng Z, Dai Y, Zhang C, Guo X, Wang T, Zhu L. Greatly enhanced oxidative activity of δ-MnO 2 to degrade organic pollutants driven by dominantly exposed {-111} facets. JOURNAL OF HAZARDOUS MATERIALS 2021; 413:125285. [PMID: 33581670 DOI: 10.1016/j.jhazmat.2021.125285] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 01/28/2021] [Accepted: 01/28/2021] [Indexed: 06/12/2023]
Abstract
The reactivity of oxidizing materials is highly related to the exposed crystal facets. Herein, δ-MnO2 with different exposure facets were synthesized and the oxidative activities of the as-prepared materials were evaluated by degrading phenol in water without light. The degradation rate of phenol by δ-MnO2-{-111} was significantly higher than that by δ-MnO2-{001}. δ-MnO2-{-111} also displayed high degradation efficiency to a variety of other organic pollutants, such as ciprofloxacin, bisphenol A, 3-chlorophenol and sulfadiazine. Comprehensive characterization and theoretical calculation verified that the {-111} facet had high density of Mn3+, thus displaying enhanced direct oxidative capacity to degrade organic pollutants. In addition, the dominant {-111} facet promoted adsorption/activation of O2, thus favored the generation of superoxide radical (O2•-), which actively participated in the degradation of pollutants. The phenol degradation kinetics could be divided into two distinct phases: the rapid phase (k1obs = 0.468 min-1) induced by Mn3+ and the slower phase (k2obs = 0.048 min-1) dominated by O2•-. The synergistically promoted non-radical and radical based reactions resulted in greatly enhanced the oxidative activity of the δ-MnO2-{-111}. These findings deepen the understanding of facet-dependent oxidative performance of materials and provided valuable insights into the possible practical application of δ-MnO2 for water purification.
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Affiliation(s)
- Zhiqiang Wang
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China
| | - Hanzhong Jia
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China.
| | - Ziwen Liu
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China
| | - Ziyi Peng
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China
| | - Yunchao Dai
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China
| | - Chi Zhang
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China
| | - Xuetao Guo
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China
| | - Tiecheng Wang
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China
| | - Lingyan Zhu
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China; Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China.
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13
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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: 127] [Impact Index Per Article: 42.3] [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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14
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Yu J, Wu J, Li M, Zhou F, Xiao Q, Zhang S, Li C, Zhu B, Qiao K. Amino‐Decorated Activated Carbon Fibers with Efficient Static Adsorptivity for Low‐Concentration Formaldehyde Gas in a Confined Space. ChemistrySelect 2021. [DOI: 10.1002/slct.202004022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Junwei Yu
- Key Laboratory of Liquid-Solid Structural Evolution and Processing of Materials of Ministry of Education Shandong University Shandong University Jinan Shandong 250061 China
- Carbon Fiber Engineering Research Center School of Materials Science and Engineering Shandong University Shandong University Jinan Shandong 250061 China
| | - Jiahao Wu
- Key Laboratory of Liquid-Solid Structural Evolution and Processing of Materials of Ministry of Education Shandong University Shandong University Jinan Shandong 250061 China
- Carbon Fiber Engineering Research Center School of Materials Science and Engineering Shandong University Shandong University Jinan Shandong 250061 China
| | - Manjia Li
- Key Laboratory of Liquid-Solid Structural Evolution and Processing of Materials of Ministry of Education Shandong University Shandong University Jinan Shandong 250061 China
- Carbon Fiber Engineering Research Center School of Materials Science and Engineering Shandong University Shandong University Jinan Shandong 250061 China
| | - Fan Zhou
- Key Laboratory of Liquid-Solid Structural Evolution and Processing of Materials of Ministry of Education Shandong University Shandong University Jinan Shandong 250061 China
- Carbon Fiber Engineering Research Center School of Materials Science and Engineering Shandong University Shandong University Jinan Shandong 250061 China
| | - Qinglin Xiao
- Key Laboratory of Liquid-Solid Structural Evolution and Processing of Materials of Ministry of Education Shandong University Shandong University Jinan Shandong 250061 China
- Carbon Fiber Engineering Research Center School of Materials Science and Engineering Shandong University Shandong University Jinan Shandong 250061 China
| | - Shengnan Zhang
- Key Laboratory of Liquid-Solid Structural Evolution and Processing of Materials of Ministry of Education Shandong University Shandong University Jinan Shandong 250061 China
- Carbon Fiber Engineering Research Center School of Materials Science and Engineering Shandong University Shandong University Jinan Shandong 250061 China
| | - Chen Li
- Yucheng Power Supply Company of Shandong Electric Power Company, State Grid Corporation of Yucheng 251200 China
| | - Bo Zhu
- Key Laboratory of Liquid-Solid Structural Evolution and Processing of Materials of Ministry of Education Shandong University Shandong University Jinan Shandong 250061 China
- Carbon Fiber Engineering Research Center School of Materials Science and Engineering Shandong University Shandong University Jinan Shandong 250061 China
| | - Kun Qiao
- School of Mechanical Electrical & Information Engineering Shandong University Weihai 264209 China
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15
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Qi L, Le Y, Wang C, Lei R, Wu T. Hierarchical nanostructures self-assembled from δ-MnO 2 ultrathin nanosheets and Mn 3O 4 octahedrons for efficient room-temperature HCHO oxidation. NEW J CHEM 2021. [DOI: 10.1039/d0nj05515h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Self-assembling ultrathin active δ-MnO2 nanosheets and Mn3O4 octahedrons into hierarchical texture enhances room-temperature formaldehyde oxidation at a low-level of Pt.
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Affiliation(s)
- Lifang Qi
- College of Architecture and Materials Engineering
- Hubei University of Education
- Wuhan 430205
- P. R. China
- Institute of Materials Research and Engineering (IMRE)
| | - Yao Le
- College of Architecture and Materials Engineering
- Hubei University of Education
- Wuhan 430205
- P. R. China
- Institute of Materials Research and Engineering (IMRE)
| | - Chao Wang
- College of Architecture and Materials Engineering
- Hubei University of Education
- Wuhan 430205
- P. R. China
- Institute of Materials Research and Engineering (IMRE)
| | - Rui Lei
- College of Architecture and Materials Engineering
- Hubei University of Education
- Wuhan 430205
- P. R. China
- Institute of Materials Research and Engineering (IMRE)
| | - Tian Wu
- Institute of Materials Research and Engineering (IMRE)
- Hubei University of Education
- Wuhan
- P. R. China
- College of Chemistry and Life Science
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16
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Qiao K, Yu J, Zhu B, Chi C, Di C, Cheng Y, Shang M, Li C. Oxygen-Rich Activated Carbon Fibers with Exceptional Cu(II) Adsorptivity and Recycling Performance. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01918] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kun Qiao
- School of Mechanical, Electrical & Information Engineering, Shandong University, Weihai 264209, China
| | - Junwei Yu
- Key Laboratory for Liquid−Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan 250061, China
- Carbon Fiber Engineering Research Center, School of Materials Science and Engineering, Shandong University, Jinan 250061, China
| | - Bo Zhu
- Key Laboratory for Liquid−Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan 250061, China
- Carbon Fiber Engineering Research Center, School of Materials Science and Engineering, Shandong University, Jinan 250061, China
| | - Chong Chi
- Key Laboratory for Liquid−Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan 250061, China
- Carbon Fiber Engineering Research Center, School of Materials Science and Engineering, Shandong University, Jinan 250061, China
| | - Chengrui Di
- School of Mechanical, Electrical & Information Engineering, Shandong University, Weihai 264209, China
| | - Yuan Cheng
- Shandong University Library, Jinan 250061, China
| | - Mingpeng Shang
- Key Laboratory for Liquid−Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan 250061, China
- Carbon Fiber Engineering Research Center, School of Materials Science and Engineering, Shandong University, Jinan 250061, China
| | - Chen Li
- Qihe Power Supply Company of Shandong Electric Power Company, State Grid Corporation of China, Qihe 251100, China
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17
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Hu M, Yin L, Zhou H, Wu L, Yuan K, Pan B, Zhong Z, Xing W. Manganese dioxide-filled hierarchical porous nanofiber membrane for indoor air cleaning at room temperature. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118094] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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18
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Zhang C, Liu G, Wu P, Zeng G, Sun Y. Complete Formaldehyde Removal over 3D Structured Na
1.1
Mn
4
O
8
@Mn
5
O
8
Biphasic‐Crystals. ChemCatChem 2020. [DOI: 10.1002/cctc.202000449] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Chunlei Zhang
- Institute of Nanochemistry and NanobiologySchool of Environmental and Chemical EngineeringShanghai University 99 Shangda Road Shanghai 200444 P. R. China
- CAS Key Laboratory of Low-carbon Conversion Science and EngineeringShanghai Advanced Research InstituteChinese Academy of Sciences 100 Haike Road Shanghai 201210 P. R. China
| | - Guojuan Liu
- CAS Key Laboratory of Low-carbon Conversion Science and EngineeringShanghai Advanced Research InstituteChinese Academy of Sciences 100 Haike Road Shanghai 201210 P. R. China
| | - Ping Wu
- CAS Key Laboratory of Low-carbon Conversion Science and EngineeringShanghai Advanced Research InstituteChinese Academy of Sciences 100 Haike Road Shanghai 201210 P. R. China
| | - Gaofeng Zeng
- CAS Key Laboratory of Low-carbon Conversion Science and EngineeringShanghai Advanced Research InstituteChinese Academy of Sciences 100 Haike Road Shanghai 201210 P. R. China
- School of Chemical SciencesUniversity of Chinese Academy of Sciences 19 A Yuquan Road Beijing 100049 P. R. China
| | - Yuhan Sun
- CAS Key Laboratory of Low-carbon Conversion Science and EngineeringShanghai Advanced Research InstituteChinese Academy of Sciences 100 Haike Road Shanghai 201210 P. R. China
- School of Chemical SciencesUniversity of Chinese Academy of Sciences 19 A Yuquan Road Beijing 100049 P. R. China
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19
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Zhang X, Zhang C, Lin Q, Cheng B, Liu X, Peng F, Ren J. Preparation of Lignocellulose-Based Activated Carbon Paper as a Manganese Dioxide Carrier for Adsorption and in-situ Catalytic Degradation of Formaldehyde. Front Chem 2020; 7:808. [PMID: 31921757 PMCID: PMC6913189 DOI: 10.3389/fchem.2019.00808] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 11/08/2019] [Indexed: 11/13/2022] Open
Abstract
Formaldehyde is a colorless, highly toxic, and flammable gas that is harmful to human health. Recently, many efforts have been devoted to the application of activated carbon to absorb formaldehyde. In this work, lignocellulose-based activated carbon fiber paper (LACFP) loaded with manganese dioxide (MnO2) was fabricated for the adsorption and in-situ catalytic degradation of formaldehyde. LACFP was prepared by two-stage carbonization and activation of sisal hemp pulp-formed paper and was then impregnated with manganese sulfate (MnSO4) and potassium permanganate (KMnO4) solutions; MnO2 then formed by in situ growth on the LACFP base by calcination. The catalytic performance of MnO2-loaded LACFP for formaldehyde was then investigated. It was found that the suitable carbonization conditions were elevating the temperature first by raising it at 10°C/min from room temperature to 280°C, then at 2°C/min from 280 to 400°C, maintaining the temperature at 400°C for 1 h, and then increasing it quickly from 400 to 700°C at 15°C/min. The conditions used for activation were similar to those for carbonization, with the temperature additionally being held at 700°C for 2 h. The conditions mentioned above were optimized to maintain the fiber structure and shape integrity of the paper, being conducive to loading with catalytically active substances. Regarding the catalytic activity of MnO2-loaded LACFP, the concentration of formaldehyde decreased by 59 ± 6 ppm and the concentration of ΔCO2 increased by 75 ± 3 ppm when the reaction proceeded at room temperature for 10 h. The results indicated that MnO2-loaded LACFP could catalyze formaldehyde into non-toxic substances.
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Affiliation(s)
- Xiao Zhang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China
| | - Chunhui Zhang
- School of Light Industry and Engineering, South China University of Technology, Guangzhou, China
| | - Qixuan Lin
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China
| | - Banggui Cheng
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China
| | - Xinxin Liu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China
| | - Feng Peng
- College of Materials Science and Technology, Institute of Biomass Chemistry and Technology, Beijing Forestry University, Beijing, China
| | - Junli Ren
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China
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20
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Su J, Cheng C, Guo Y, Xu H, Ke Q. OMS-2-based catalysts with controllable hierarchical morphologies for highly efficient catalytic oxidation of formaldehyde. JOURNAL OF HAZARDOUS MATERIALS 2019; 380:120890. [PMID: 31325698 DOI: 10.1016/j.jhazmat.2019.120890] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 06/05/2019] [Accepted: 07/11/2019] [Indexed: 06/10/2023]
Abstract
Cryptomelane-type octahedral molecular sieve (OMS-2) catalysts are currently attracting tremendous attention due to their low-cost and remarkable thermo-catalytic activity. However, it is still difficult for OMS-2 catalysts to completely degrade formaldehyde at relatively low or even ambient temperature. In this work, OMS-2 catalysts with different ratios of length to diameter were prepared and the OMS-2-s with the minim ratio of length to diameter (1-3) exhibited the best catalytic performance than the other samples. Then, the optimized OMS-2-s nanorods were loaded on the SiO2 nanofibers via a simultaneous electrospining-spray strategy. The evaluation for the dynamic catalytic activities of the samples showed that, the T50 (HCHO conversion reached to 50%) for the OMS-2/SiO2 nanofibrous membranes was decreased by 24 °C than the OMS-2-s nanorods. Furthermore, in the static experiment of HCHO decomposition, the composite membrane could achieve a catalytic efficiency of 52.3% at 25 °C, much higher than that of the OMS-2-s nanorods (45.9%). This work offers a new strategy to improve the catalytic efficiency of OMS-2 by controlling the morphology and loading of OMS-2 nanorods, and also designs a kind of advanced nano OMS-2-based nanofibrous membranes with hierarchical nanostructures for the highly efficient formaldehyde elimination during the practical application.
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Affiliation(s)
- Jiafei Su
- College of Life and Environmental Sciences, Shanghai Normal University, No. 100 Guilin Road, Shanghai 200234, China
| | - Cuilian Cheng
- College of Life and Environmental Sciences, Shanghai Normal University, No. 100 Guilin Road, Shanghai 200234, China
| | - Yaping Guo
- College of Life and Environmental Sciences, Shanghai Normal University, No. 100 Guilin Road, Shanghai 200234, China
| | - He Xu
- College of Life and Environmental Sciences, Shanghai Normal University, No. 100 Guilin Road, Shanghai 200234, China.
| | - Qinfei Ke
- College of Life and Environmental Sciences, Shanghai Normal University, No. 100 Guilin Road, Shanghai 200234, China.
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21
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Zhu S, Wang J, Nie L. Progress of Catalytic Oxidation of Formaldehyde over Manganese Oxides. ChemistrySelect 2019. [DOI: 10.1002/slct.201902701] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Silong Zhu
- Hubei Provincial Key Laboratory of Green Materials for Light IndustryHubei University of Technology Wuhan 430068 P. R. China
| | - Jie Wang
- Hubei Provincial Key Laboratory of Green Materials for Light IndustryHubei University of Technology Wuhan 430068 P. R. China
| | - Longhui Nie
- Hubei Provincial Key Laboratory of Green Materials for Light IndustryHubei University of Technology Wuhan 430068 P. R. China
- Collaborative Innovation Center of Green Light-weight Materials and ProcessingHubei University of Technology Wuhan 430068 P. R. China
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22
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Kang YG, Yoon H, Lee CS, Kim EJ, Chang YS. Advanced oxidation and adsorptive bubble separation of dyes using MnO 2-coated Fe 3O 4 nanocomposite. WATER RESEARCH 2019; 151:413-422. [PMID: 30622085 DOI: 10.1016/j.watres.2018.12.038] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 12/07/2018] [Accepted: 12/13/2018] [Indexed: 06/09/2023]
Abstract
In this study, MnO2-coated Fe3O4 nanocomposite (Fe3O4@MnO2) was utilized to decompose H2O2 to remove dyes via advanced oxidation processes and adsorptive bubble separation (advanced ABS system). The combination of H2O2 and Fe3O4@MnO2 generated bubbles and formed a stable foam layer in the presence of a surfactant; sodium dodecyl sulfate (SDS) or cetyltrimethylammonium chloride (CTAC), separating dye from the solution. On the basis of radical quenching experiments, electron paramagnetic resonance and X-ray photoelectron spectroscopy analyses, it was confirmed that the MnO2 shell of catalyst was reduced to Mn2O3 by H2O2, generating radicals and oxygen gas for the removal of dyes. In the advanced ABS system, ∙OH and 1O2 were the main radical species and the O2 concentrations of 0.34 and 0.71 mM were increased in the solution and headspace, respectively. The advanced ABS system demonstrated a high removal efficiency of methylene blue (MB) (99.0%) and the removal rate increased with increasing amounts of components (H2O2, catalyst and SDS). Also, the advanced ABS system maintained high removal efficiency of MB at a wide pH range of 3-9. In addition to the anionic surfactant of SDS, CTAC was applied as a cationic surfactant for the advanced ABS of anionic dyes. Lastly, the scale-up system was applied to remediate dye-contaminated river water and industrial wastewater for possible practical applications.
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Affiliation(s)
- Yu-Gyeong Kang
- Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Hakwon Yoon
- Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Chung-Seop Lee
- Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Eun-Ju Kim
- Center for Water Resource Cycle Research, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Yoon-Seok Chang
- Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.
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23
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Xie A, Tao Y, Jin X, Gu P, Huang X, Zhou X, Luo S, Yao C, Li X. A γ-Fe2O3-modified nanoflower-MnO2/attapulgite catalyst for low temperature SCR of NOx with NH3. NEW J CHEM 2019. [DOI: 10.1039/c8nj04524k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel mesoporous γ-Fe2O3-modified nanoflower-MnO2/attapulgite catalyst has been fabricated through a facile hydrothermal method and used for low temperature SCR of NOx with NH3.
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Affiliation(s)
- Aijuan Xie
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- P. R. China
| | - Yiyang Tao
- School of Fine Arts
- Nanjing Normal University
- Nanjing
- P. R. China
| | - Xiang Jin
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- P. R. China
| | - Pengfei Gu
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- P. R. China
| | - Xiaoyan Huang
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- P. R. China
| | - Xingmeng Zhou
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- P. R. China
| | - Shiping Luo
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- P. R. China
| | - Chao Yao
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- P. R. China
| | - Xiazhang Li
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- P. R. China
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24
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Conversion of biomass components to methyl levulinate over an ultra-high performance fiber catalyst in impellers of the agitation system. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.04.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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25
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Yi Y, Li C, Zhao L, Du X, Gao L, Chen J, Zhai Y, Zeng G. The synthetic evaluation of CuO-MnO x-modified pinecone biochar for simultaneous removal formaldehyde and elemental mercury from simulated flue gas. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:4761-4775. [PMID: 29198026 DOI: 10.1007/s11356-017-0855-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Accepted: 11/27/2017] [Indexed: 05/28/2023]
Abstract
A series of low-cost Cu-Mn-mixed oxides supported on biochar (CuMn/HBC) synthesized by an impregnation method were applied to study the simultaneous removal of formaldehyde (HCHO) and elemental mercury (Hg0) at 100-300° C from simulated flue gas. The metal loading value, Cu/Mn molar ratio, flue gas components, reaction mechanism, and interrelationship between HCHO removal and Hg0 removal were also investigated. Results suggested that 12%CuMn/HBC showed the highest removal efficiency of HCHO and Hg0 at 175° C corresponding to 89%and 83%, respectively. The addition of NO and SO2 exhibited inhibitive influence on HCHO removal. For the removal of Hg0, NO showed slightly positive influence and SO2 had an inhibitive effect. Meanwhile, O2 had positive impact on the removal of HCHO and Hg0. The samples were characterized by SEM, XRD, BET, XPS, ICP-AES, FTIR, and H2-TPR. The sample characterization illustrated that CuMn/HBC possessed the high pore volume and specific surface area. The chemisorbed oxygen (Oβ) and the lattice oxygen (Oα) which took part in the removal reaction largely existed in CuMn/HBC. What is more, MnO2 and CuO (or Cu2O) were highly dispersed on the CuMn/HBC surface. The strong synergistic effect between Cu-Mn mixed oxides was critical to the removal reaction of HCHO and Hg0 via the redox equilibrium of Mn4+ + Cu+ ↔ Mn3+ + Cu2+.
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Affiliation(s)
- Yaoyao Yi
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, People's Republic of China
| | - Caiting Li
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China.
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, People's Republic of China.
| | - Lingkui Zhao
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, People's Republic of China
- College of Environmental Science and Resources, Xiangtan University, Xiangtan, 411105, People's Republic of China
| | - Xueyu Du
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, People's Republic of China
| | - Lei Gao
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, People's Republic of China
| | - Jiaqiang Chen
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, People's Republic of China
| | - Yunbo Zhai
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, People's Republic of China
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, People's Republic of China
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26
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Lu S, Wang X, Zhu Q, Chen C, Zhou X, Huang F, Li K, He L, Liu Y, Pang F. Ag–K/MnO2 nanorods as highly efficient catalysts for formaldehyde oxidation at low temperature. RSC Adv 2018; 8:14221-14228. [PMID: 35540748 PMCID: PMC9079893 DOI: 10.1039/c8ra01611a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 03/26/2018] [Indexed: 11/21/2022] Open
Abstract
A series of Ag–K/MnO2 nanorods with various molar ratios of K/Ag were synthesized by a conventional wetness incipient impregnation method. The as-prepared catalysts were used for the catalytic oxidation of HCHO. The Ag–K/MnO2 nanorods with an optimal K/Ag molar ratio of 0.9 demonstrated excellent HCHO conversion efficiency of 100% at a low temperature of 60 °C. The structures of the samples were investigated by BET, TEM, SEM, XRD, H2-TPR, O2-TPD and XPS. The results showed that Ag–0.9K/MnO2-r exhibited more facile reducibility and greatly abundant surface active oxygen species, endowing it with the best catalytic activity of the studied catalysts. This work provides new insights into the development of low-cost and highly efficient catalysts for the removal of HCHO. Ag–K/MnO2 nanorods with appropriate K/Ag ratio demonstrated excellent catalytic activity for complete oxidation of formaldehyde.![]()
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Affiliation(s)
- Suhong Lu
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Xue Wang
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Qinyu Zhu
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Canchang Chen
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Xuefeng Zhou
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Fenglin Huang
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Kelun Li
- Shaanxi Coal and Chemical Technology Institute Co., Ltd
- Xi'an 710070
- China
| | - Lulu He
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Yanxiong Liu
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Fanjue Pang
- College of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
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27
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Su J, Yang G, Cheng C, Huang C, Xu H, Ke Q. Hierarchically structured TiO2/PAN nanofibrous membranes for high-efficiency air filtration and toluene degradation. J Colloid Interface Sci 2017; 507:386-396. [DOI: 10.1016/j.jcis.2017.07.104] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 07/25/2017] [Accepted: 07/28/2017] [Indexed: 12/22/2022]
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28
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A potential industrialized fiber-supported copper catalyst for one-pot multicomponent CuAAC reactions in water. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2017.04.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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