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Cimini A, Imperi E, Picano A, Rossi M. Electrospun nanofibers for medical face mask with protection capabilities against viruses: State of the art and perspective for industrial scale-up. APPLIED MATERIALS TODAY 2023; 32:101833. [PMID: 37152683 PMCID: PMC10151159 DOI: 10.1016/j.apmt.2023.101833] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 04/13/2023] [Accepted: 04/25/2023] [Indexed: 05/09/2023]
Abstract
Face masks have proven to be a useful protection from airborne viruses and bacteria, especially in the recent years pandemic outbreak when they effectively lowered the risk of infection from Coronavirus disease (COVID-19) or Omicron variants, being recognized as one of the main protective measures adopted by the World Health Organization (WHO). The need for improving the filtering efficiency performance to prevent penetration of fine particulate matter (PM), which can be potential bacteria or virus carriers, has led the research into developing new methods and techniques for face mask fabrication. In this perspective, Electrospinning has shown to be the most efficient technique to get either synthetic or natural polymers-based fibers with size down to the nanoscale providing remarkable performance in terms of both particle filtration and breathability. The aim of this Review is to give further insight into the implementation of electrospun nanofibers for the realization of the next generation of face masks, with functionalized membranes via addiction of active material to the polymer solutions that can give optimal features about antibacterial, antiviral, self-sterilization, and electrical energy storage capabilities. Furthermore, the recent advances regarding the use of renewable materials and green solvent strategies to improve the sustainability of electrospun membranes and to fabricate eco-friendly filters are here discussed, especially in view of the large-scale nanofiber production where traditional membrane manufacturing may result in a high environmental and health risk.
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Affiliation(s)
- A Cimini
- Department of Basic and Applied Sciences for Engineering, University of Rome Sapienza, Rome 00161, Italy
- LABOR s.r.l., Industrial Research Laboratory, Via Giacomo Peroni, 386, Rome, Italy
| | - E Imperi
- LABOR s.r.l., Industrial Research Laboratory, Via Giacomo Peroni, 386, Rome, Italy
| | - A Picano
- LABOR s.r.l., Industrial Research Laboratory, Via Giacomo Peroni, 386, Rome, Italy
| | - M Rossi
- Department of Basic and Applied Sciences for Engineering, University of Rome Sapienza, Rome 00161, Italy
- Research Center for Nanotechnology for Engineering of Sapienza (CNIS), University of Rome Sapienza, Rome 00185, Italy
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2
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Deng Y, Zhu M, Lu T, Fan Q, Ma W, Zhang X, Chen L, Min H, Xiong R, Huang C. Hierarchical fiber with granular-convex structure for highly efficient PM2.5 capture. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122235] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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3
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Özen HA, Mutuk T, Yiğiter M. Smoke filtration performances of membranes produced from commercial PVA and recycled PET by electrospinning method and ANN modeling. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:2469-2479. [PMID: 35927407 DOI: 10.1007/s11356-022-22383-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 07/31/2022] [Indexed: 06/15/2023]
Abstract
Plastic waste and air pollution are becoming a great concern due to their adverse effect on human health and the environment. There is increasing number of evidence showing that recycling plastic and filtering harmful air pollutants are one of the most effective and promising way to eliminate their hazard on the environment. In this purpose, we developed eco-friendly filtration materials from recycled PET by electrospinning method to be used in air filtration and compared them with conventional PVA membranes. Filtration efficiency of prepared membranes were tested homemade membrane system using cigarette smoke source. Characterization results and smoke filtration performance of recycled PET and PVA membranes before and after smoke filtration were examined. The results demonstrated that the removal efficiencies of PVA-5 wt.%, PVA-10 wt.%, and PVA-15 wt.% were 4.11%, 11.32%, and 12.14%, respectively. A similar trend was also observed in recycled PET-5 wt.%, PET-10 wt.%, and PET-15 wt.% membranes with 4.32%, 10.79%, and 11.68% of filtration efficiency, respectively. Based on this result, using recycled PET can be an alternative way to produce a higher value product compared to traditional polymer membranes used commercially. This result is also supported by the neural network model of this study.
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Affiliation(s)
- Hülya Aykaç Özen
- Department of Environmental Engineering, Ondokuz Mayis University, 55200, Samsun, Turkey
| | - Tuğba Mutuk
- Department of Metallurgical and Materials Engineering, Ondokuz Mayis University, 55200, Samsun, Turkey.
| | - Merve Yiğiter
- Department of Metallurgical and Materials Engineering, Ondokuz Mayis University, 55200, Samsun, Turkey
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4
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Yuan K, Zeng Y, Gan J, Zhong Z, Xing W. Construction of Pt@CNTs/SiC Catalytic Membrane for High-Efficiency Removal of Formaldehyde and Dust. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c03670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Kai Yuan
- State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing211816, PR China
| | - Yiqing Zeng
- State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing211816, PR China
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing211816, PR China
| | - Jinxin Gan
- State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing211816, PR China
| | - Zhaoxiang Zhong
- State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing211816, PR China
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing211816, PR China
| | - Weihong Xing
- State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing211816, PR China
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5
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Atighi M, Hasanzadeh M, Sadatalhosseini AA, Azimzadeh HR. Metal–Organic Framework@Graphene Oxide Composite-Incorporated Polyacrylonitrile Nanofibrous Filters for Highly Efficient Particulate Matter Removal and Breath Monitoring. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c03825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Milad Atighi
- Department of Textile Engineering, Yazd University, P.O. Box 89195-741, Yazd89195-741, Iran
| | - Mahdi Hasanzadeh
- Department of Textile Engineering, Yazd University, P.O. Box 89195-741, Yazd89195-741, Iran
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6
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Hossain MT, Shahid MA, Ali A. Development of nanofibrous membrane from recycled polyethene terephthalate bottle by electrospinning. OPENNANO 2022. [DOI: 10.1016/j.onano.2022.100089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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7
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Aerosol filtration performance of electrospun membranes comprising polyacrylonitrile and cellulose nanocrystals. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120392] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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8
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Yang X, Merenda A, AL-Attabi R, Dumée LF, Zhang X, Thang SH, Pham H, Kong L. Towards next generation high throughput ion exchange membranes for downstream bioprocessing: A review. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120325] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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9
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Zhou Y, Liu Y, Zhang M, Feng Z, Yu DG, Wang K. Electrospun Nanofiber Membranes for Air Filtration: A Review. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:1077. [PMID: 35407195 PMCID: PMC9000692 DOI: 10.3390/nano12071077] [Citation(s) in RCA: 45] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 03/17/2022] [Accepted: 03/22/2022] [Indexed: 12/12/2022]
Abstract
Nanomaterials for air filtration have been studied by researchers for decades. Owing to the advantages of high porosity, small pore size, and good connectivity, nanofiber membranes prepared by electrospinning technology have been considered as an outstanding air-filter candidate. To satisfy the requirements of material functionalization, electrospinning can provide a simple and efficient one-step process to fabricate the complex structures of functional nanofibers such as core-sheath structures, Janus structures, and other multilayered structures. Additionally, as a nanoparticle carrier, electrospun nanofibers can easily achieve antibacterial properties, flame-retardant properties, and the adsorption properties of volatile gases, etc. These simple and effective approaches have benefited from the significate development of electrospun nanofibers for air-filtration applications. In this review, the research progress on electrospun nanofibers as air filters in recent years is summarized. The fabrication methods, filtration performances, advantages, and disadvantages of single-polymer nanofibers, multipolymer composite nanofibers, and nanoparticle-doped hybrid nanofibers are investigated. Finally, the basic principles of air filtration are concluded upon and prospects for the application of complex-structured nanofibers in the field of air filtration are proposed.
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Affiliation(s)
- Yangjian Zhou
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (Y.Z.); (Y.L.); (M.Z.); (Z.F.)
| | - Yanan Liu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (Y.Z.); (Y.L.); (M.Z.); (Z.F.)
| | - Mingxin Zhang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (Y.Z.); (Y.L.); (M.Z.); (Z.F.)
| | - Zhangbin Feng
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (Y.Z.); (Y.L.); (M.Z.); (Z.F.)
| | - Deng-Guang Yu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (Y.Z.); (Y.L.); (M.Z.); (Z.F.)
- Shanghai Engineering Technology Research Center for High-Performance Medical Device Materials, Shanghai 200093, China
| | - Ke Wang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (Y.Z.); (Y.L.); (M.Z.); (Z.F.)
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10
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Baselga-Lahoz M, Yus C, Arruebo M, Sebastián V, Irusta S, Jiménez S. Submicronic Filtering Media Based on Electrospun Recycled PET Nanofibers: Development, Characterization, and Method to Manufacture Surgical Masks. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:925. [PMID: 35335738 PMCID: PMC8952864 DOI: 10.3390/nano12060925] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 03/02/2022] [Accepted: 03/07/2022] [Indexed: 02/01/2023]
Abstract
The disposal of single-use personal protective equipment has brought a notable environmental impact in the context of the COVID-19 pandemic. During these last two years, part of the global research efforts has been focused on preventing contagion using nanotechnology. This work explores the production of filter materials with electrohydrodynamic techniques using recycled polyethylene terephthalate (PET). PET was chosen because it is one of the materials most commonly present in everyday waste (such as in food packaging, bags, or bottles), being the most frequently used thermoplastic polymer in the world. The influence of the electrospinning parameters on the filtering capacity of the resulting fabric was analyzed against both aerosolized submicron particles and microparticulated matter. Finally, we present a new scalable and straightforward method for manufacturing surgical masks by electrospinning and we validate their performance by simulating the standard conditions to which they are subjected to during use. The masks were successfully reprocessed to ensure that the proposed method is able to reduce the environmental impact of disposable face masks.
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Affiliation(s)
- Marta Baselga-Lahoz
- Institute for Health Research Aragon (IIS Aragón), 50009 Zaragoza, Spain; (M.A.); (V.S.); (S.I.)
| | - Cristina Yus
- Instituto de Nanociencia y Materiales de Aragon (INMA), CSIC—University of Zaragoza, 50009 Zaragoza, Spain;
- Department of Chemical Engineering, University of Zaragoza, Campus Río Ebro—I + D Building, 50018 Zaragoza, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain
| | - Manuel Arruebo
- Institute for Health Research Aragon (IIS Aragón), 50009 Zaragoza, Spain; (M.A.); (V.S.); (S.I.)
- Instituto de Nanociencia y Materiales de Aragon (INMA), CSIC—University of Zaragoza, 50009 Zaragoza, Spain;
- Department of Chemical Engineering, University of Zaragoza, Campus Río Ebro—I + D Building, 50018 Zaragoza, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain
| | - Víctor Sebastián
- Institute for Health Research Aragon (IIS Aragón), 50009 Zaragoza, Spain; (M.A.); (V.S.); (S.I.)
- Instituto de Nanociencia y Materiales de Aragon (INMA), CSIC—University of Zaragoza, 50009 Zaragoza, Spain;
- Department of Chemical Engineering, University of Zaragoza, Campus Río Ebro—I + D Building, 50018 Zaragoza, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain
| | - Silvia Irusta
- Institute for Health Research Aragon (IIS Aragón), 50009 Zaragoza, Spain; (M.A.); (V.S.); (S.I.)
- Instituto de Nanociencia y Materiales de Aragon (INMA), CSIC—University of Zaragoza, 50009 Zaragoza, Spain;
- Department of Chemical Engineering, University of Zaragoza, Campus Río Ebro—I + D Building, 50018 Zaragoza, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain
| | - Santiago Jiménez
- Laboratorio de Fluidodinámica y Tecnologías de la Combustión (Liftec), CSIC—University of Zaragoza, 50018 Zaragoza, Spain;
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11
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Yang X, Hsia T, Merenda A, AL-Attabi R, Dumee LF, Thang SH, Kong L. Constructing novel nanofibrous polyacrylonitrile (PAN)-based anion exchange membrane adsorber for protein separation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Hung SH, Bowden JW, Peltier RE, Schiffman JD. Optimizing the Packing Density and Chemistry of Cellulose Nanofilters for High-Efficiency Particulate Removal. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c03051] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Shao-Hsiang Hung
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003-9303, United States
| | - Jared W. Bowden
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003-9303, United States
| | - Richard E. Peltier
- School of Public Health & Health Sciences, University of Massachusetts Amherst, Amherst, Massachusetts 01003-9303, United States
| | - Jessica D. Schiffman
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003-9303, United States
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13
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Slip effect based bimodal nanofibrous membrane for high-efficiency and low-resistance air purification. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119258] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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14
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Wei Z, Su Q, Wang X, Long S, Zhang G, Lin Q, Yang J. Nanofiber Air Filters with High-Temperature Stability and Superior Chemical Resistance for the High-Efficiency PM2.5 Removal. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c01821] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Zhimei Wei
- Institute of Materials Science and Technology, Analytical & Testing Center, Sichuan University, Chengdu 610065, China
| | - Qing Su
- College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Xiaojun Wang
- Institute of Materials Science and Technology, Analytical & Testing Center, Sichuan University, Chengdu 610065, China
| | - Shengru Long
- Institute of Materials Science and Technology, Analytical & Testing Center, Sichuan University, Chengdu 610065, China
| | - Gang Zhang
- Institute of Materials Science and Technology, Analytical & Testing Center, Sichuan University, Chengdu 610065, China
| | - Qingyu Lin
- Research Center of Analytical Instrumentation, School of Mechanical Engineering, Sichuan University, Chengdu 610065, China
| | - Jie Yang
- Institute of Materials Science and Technology, Analytical & Testing Center, Sichuan University, Chengdu 610065, China
- State Key Laboratory of Polymer Materials Engineering (Sichuan University), Chengdu 610065, China
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15
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Advances in the Use of Nanocomposite Membranes for Carbon Capture Operations. INTERNATIONAL JOURNAL OF CHEMICAL ENGINEERING 2021. [DOI: 10.1155/2021/6666242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The adoption of nanodoped membranes in the areas of gas stream separation, water, and wastewater treatments due to the physical and operational advantages of such membranes has significantly increased. The literature has shown that the surface structure and physicochemical properties of nanodoped membranes contribute significantly to the interaction and rejection characteristics when compared to bare membranes. This study reviews the recent developments on nanodoped membranes, and their hybrids for carbon capture and gas separation operations. Features such as the nanoparticles/materials and hybrids used for membrane doping and the effect of physicochemical properties and water vapour in nanodoped membrane performance for carbon capture are discussed. The highlights of this review show that nanodoped membrane is a facile modification technique which improves the membrane performance in most cases and holds a great potential for carbon capture. Membrane module design and material, thickness, structure, and configuration were identified as key factors that contribute directly, to nanodoped membrane performance. This study also affirms that the three core parameters satisfied before turning a microporous material into a membrane are as follows: high permeability and selectivity, ease of fabrication, and robust structure. From the findings, it is also observed that the application of smart models and knowledge-based systems have not been extensively studied in nanoparticle-/material-doped membranes. More studies are encouraged because technical improvements are needed in order to achieve high performance of carbon capture using nanodoped membranes, as well as improving their durability, permeability, and selectivity of the membrane.
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16
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Development of Filter Media by Electrospinning for Air Filtration of Nanoparticles from PET Bottles. MEMBRANES 2021; 11:membranes11040293. [PMID: 33921575 PMCID: PMC8073527 DOI: 10.3390/membranes11040293] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/13/2021] [Accepted: 04/14/2021] [Indexed: 11/16/2022]
Abstract
Air pollution and solid pollution are considered global problems, and endanger human health mainly due to the emission of fine particulate matter released into the atmosphere and improper disposal of post-consumer plastic bottles. Therefore, it is urgent to develop filter media to effectively protect the public. The properties of plastics make them potential candidates for nanofiber mat formers due to their attractive structural and mechanical characteristics. This work aims to produce and evaluate novel PET electrospun fibers dispensed with the use of support materials to be used as filter media to remove nanoparticles from the air. The electrospinning process was carried out by changing the concentration of the polymer solution, the needle diameter, and the electrospinning processing time at two rotation speeds. The average diameters of the micro- and nanofibers of the filter media produced ranged from 3.25 μm to 0.65 μm and it was possible to conclude that, as the size of the fibers decreased, the mechanical strength increased from 3.2 to 4.5 MPa. In filtration tests, a collection efficiency of up to 99% with low-pressure drops (19.4 Pa) was obtained for nanoparticles, demonstrating high quality factor filter media, which could be applicable in gas filtration.
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Falcucci S, Paolini F, Mileo AM, Franconi R, Massa S, Rinaldi A, Venuti A. ePCL Electrospun Microfibrous Layers for Immune Assays: Sensitive ELISA for the Detection of Serum Antibodies Against HPV16 E7 Oncoprotein. ACS OMEGA 2021; 6:8778-8783. [PMID: 33842749 PMCID: PMC8028003 DOI: 10.1021/acsomega.0c03976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 10/26/2020] [Indexed: 06/12/2023]
Abstract
Human papillomavirus (HPV) type 16 is the etiologic agent of more than 50% anal/cervical cancers and about 20% oropharyngeal cancers. HPV16 E6 and E7 oncogenes favor the transformation and are essential for maintaining the transformed status. Serum anti-E6 and anti-E7 antibodies appear to have prognostic significance for HPV-associated cancers. However, most of the previous attempts to establish diagnostic tools based on serum detection of E6 and/or E7 antibodies have been unsuccessful, mainly due to the low accuracy of applied tests. This paper reports on a feasibility study to prove the possibility to easily immobilize HPV16 E7 onto electrospun substrates for application in diagnostic tools. In this study, poly(ε-caprolactone) electrospun scaffolds (called ePCL) are used to provide a microstructured substrate with a high surface-to-volume ratio, capable of binding E7 proteins when used for enzyme-linked immunosorbent assay (ELISA) tests. ePCL functionalized with E7 exhibited superior properties compared to standard polystyrene plates, increasing the detection signal from serum antibodies by 5-6 times. Analysis of the serum samples from mice immunized with HPV16 E7 DNA vaccine showed higher efficiency of this new anti-E7 ePCL-ELISA test vs control in E7-specific antibody detection. In addition, ePCL-E7-ELISA is prepared with a relatively low amount of antigen, decreasing the manufacturing costs.
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Affiliation(s)
- Susanna Falcucci
- HPV-Unit
UOSD Tumor Immunology and Immunotherapy—IRCCS Regina Elena
National Cancer Institute, Via Elio Chianesi 53, 00144 Rome, Italy
| | - Francesca Paolini
- HPV-Unit
UOSD Tumor Immunology and Immunotherapy—IRCCS Regina Elena
National Cancer Institute, Via Elio Chianesi 53, 00144 Rome, Italy
| | - Anna Maria Mileo
- UOSD
Tumor Immunology and Immunotherapy—IRCCS Regina Elena National
Cancer Institute, Via
Elio Chianesi 53, 00144 Rome, Italy
| | - Rosella Franconi
- Department
of Sustainability, ENEA (Italian National
Agency for New Technologies, Energy and Sustainable Economic Development),
Casaccia Research Centre, Via Anguillarese, 301, S. Maria di Galeria, 00123 Rome, Italy
| | - Silvia Massa
- Department
of Sustainability, ENEA (Italian National
Agency for New Technologies, Energy and Sustainable Economic Development),
Casaccia Research Centre, Via Anguillarese, 301, S. Maria di Galeria, 00123 Rome, Italy
| | - Antonio Rinaldi
- Department
of Sustainability, ENEA (Italian National
Agency for New Technologies, Energy and Sustainable Economic Development),
Casaccia Research Centre, Via Anguillarese, 301, S. Maria di Galeria, 00123 Rome, Italy
| | - Aldo Venuti
- HPV-Unit
UOSD Tumor Immunology and Immunotherapy—IRCCS Regina Elena
National Cancer Institute, Via Elio Chianesi 53, 00144 Rome, Italy
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18
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Al-Attabi R, Morsi Y, Schütz JA, Cornu D, Maghe M, Dumée LF. Flexible and reusable carbon nano-fibre membranes for airborne contaminants capture. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 754:142231. [PMID: 33254856 DOI: 10.1016/j.scitotenv.2020.142231] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 08/09/2020] [Accepted: 09/03/2020] [Indexed: 06/12/2023]
Abstract
Airborne aerosol pollutants generated from combustion vehicles exhausts, industrial facilities and microorganisms represent serious health challenges. Although membrane separation has emerged as a technique of choice for airborne contaminants removal, allowing for both size exclusion and surface adsorption. Here, electrospun carbon nanofibre mats were formed from poly(acrylonitrile) by systematic stabilization and carbonization processes to generate flexible and self-standing membranes for air filtration. The great mechanical flexibility of the electrospun carbon-nanofibre membranes was achieved through extreme quenching conditions on a carbon fibre processing line, allowing for complete carbonization in just 3 min. The carbonized nanofibre membranes, with fibre diameters in the range of 218 to 565 nm exhibited modulus of elasticity around 277.5 MPa. The samples exhibited air filtration efficiencies in the range of 97.2 to 99.4% for aerosol particle in the size of 300 nm based on face velocity, higher than benchmark commercial glass fibre (GF) air filters. The carbonized electrospun nanofibre membranes also yielded excellent thermal stability withstanding temperatures up to 450 °C, thus supporting the development of autoclavable and recyclable membranes. This significant and scalable strategy provides opportunities to mass-produce reusable air filters suitable for otherwise complex airborne pollutants, including volatile organic carbons and bio-contaminants, such as viruses.
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Affiliation(s)
- Riyadh Al-Attabi
- Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia; Deakin University, Institute for Frontier Materials, Waurn Ponds, Victoria 3216, Australia; Middle Technical University, Al-Za'franiya, Baghdad 10074, Iraq
| | - Yosry Morsi
- Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Jürg A Schütz
- CSIRO Manufacturing, Waurn Ponds, Victoria 3216, Australia
| | - David Cornu
- Institut Europeen des Membranes, UMR 5635, Université de Montpellier, CNRS, ENSCM, Montpellier, France
| | - Maxime Maghe
- Carbon Nexus, Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia
| | - Ludovic F Dumée
- Deakin University, Institute for Frontier Materials, Waurn Ponds, Victoria 3216, Australia.
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19
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Xie F, Wang Y, Zhuo L, Jia F, Ning D, Lu Z. Electrospun Wrinkled Porous Polyimide Nanofiber-Based Filter via Thermally Induced Phase Separation for Efficient High-Temperature PMs Capture. ACS APPLIED MATERIALS & INTERFACES 2020; 12:56499-56508. [PMID: 33275401 DOI: 10.1021/acsami.0c18143] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Benefiting from its superior thermal stability, polyimide (PI) fiber-based composites have attracted wide attention in the field of high-temperature filtration and separation. However, the trade-off between filtration efficiency and pressure drop of traditional PI filters with single morphology and structure still remains challenging. Herein, the electrospun PI high-temperature-resistant air filter was fabricated via thermal-induced phase separation (TIPS), employing polyacrylonitrile (PAN) as a template. The PI nanofibers exhibited special wrinkled porous structure, and the filter possessed a high specific surface area of 304.77 m2/g. The removal of PAN changed the chemical composition of the fiber and induced PI molecules to form complex folds on the surface of the fiber, thus forming the wrinkled porous structure. Additionally, the wrinkled porous PI nanofiber filter displayed a high PM0.3 removal efficiency of 99.99% with a low pressure drop of 43.35 Pa at room temperature, and the filtration efficiency was still over 97% after being used for long time. Moreover, the efficiency of the filter could even reach 95.55% at a high temperature of 280 °C. The excellent filtration performance was attributed to the special wrinkled porous surface, which could limit the Brownian motion of PMs and reinforce the mechanical interception effect to capture the particulate matters (PMs) on the surface of the filter. Therefore, this work provided a novel strategy for the fabrication of filters with special morphology to cope with increasingly serious air pollution in the industrial field.
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Affiliation(s)
- Fan Xie
- College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, National Demonstration Center for Experimental Light Chemistry Engineering Education, Key Laboratory of Paper Based Functional Materials of China National Light Industry, Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Yafang Wang
- College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, National Demonstration Center for Experimental Light Chemistry Engineering Education, Key Laboratory of Paper Based Functional Materials of China National Light Industry, Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Longhai Zhuo
- College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, National Demonstration Center for Experimental Light Chemistry Engineering Education, Key Laboratory of Paper Based Functional Materials of China National Light Industry, Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Fengfeng Jia
- College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, National Demonstration Center for Experimental Light Chemistry Engineering Education, Key Laboratory of Paper Based Functional Materials of China National Light Industry, Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Doudou Ning
- College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, National Demonstration Center for Experimental Light Chemistry Engineering Education, Key Laboratory of Paper Based Functional Materials of China National Light Industry, Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Zhaoqing Lu
- College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, National Demonstration Center for Experimental Light Chemistry Engineering Education, Key Laboratory of Paper Based Functional Materials of China National Light Industry, Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi'an 710021, China
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20
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Lee S, Han KS, Kim M, Kim MC, Anh CV, Nah J. Polybenzimidazole-Benzophenone Composite Nanofiber Window Air Filter with Superb UV Resistance and High Chemical and Thermal Durability. ACS APPLIED MATERIALS & INTERFACES 2020; 12:23914-23922. [PMID: 32369331 DOI: 10.1021/acsami.0c03868] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
There is a growing interest in window air filters to protect indoor air quality from ultrafine particulate matter (PM) in outdoor air. The filters for this purpose must achieve high filtering efficiency without compromising the original functions of the window, such as high air permeability and visibility. Several filters meeting these requirements have been developed and demonstrate a high PM2.5 filtering efficiency. However, these filters are installed outside the window or on the window screen guard, thereby requiring high levels of ultraviolet (UV), chemical, and thermal resistance. These requirements have been overlooked so far. In this study, we examine the fabrication and performance of a polybenzimidazole-benzophenone (PBI-BP) composite nanofiber air filter that demonstrates superb UV resistance and chemical and thermal durability. Because of the UV absorbance of the BP in the nanofibers, the filter membrane is robust even under prolonged UV exposure, which is essential for filters for this purpose. The filter membrane is not damaged even after treatment in strong acids or annealing at high temperature up to 400 °C. Thus, the PBI-BP composite filter is suitable for practical application in window air filters and can be adapted to develop filters used under other harsh environments.
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Affiliation(s)
- Sol Lee
- Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Korea
| | - Kyung Seok Han
- Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Korea
| | - Minje Kim
- Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Korea
| | - Min Cheol Kim
- Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Korea
| | - Cao Viet Anh
- Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Korea
| | - Junghyo Nah
- Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Korea
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Zhou M, Hu M, Quan Z, Zhang H, Qin X, Wang R, Yu J. Polyacrylonitrile/polyimide composite sub-micro fibrous membranes for precise filtration of PM 0.26 pollutants. J Colloid Interface Sci 2020; 578:195-206. [PMID: 32526523 DOI: 10.1016/j.jcis.2020.05.081] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 05/19/2020] [Accepted: 05/20/2020] [Indexed: 10/24/2022]
Abstract
Particulate matter (PM) pollution has enormously threatened ecosystem and public health. Among various air filtration medium, fibrous ones are very attracting and promising, with an array of advantages such as high specific surface area, and good internal connectivity. Even so, the large-scale fabrication of fibrous filtration materials still remains challenging. Here, three-dimensional polyacrylonitrile/polyimide (PAN/PI) composite sub-micro fibrous membranes were fabricated facilely via free surface electrospinning for precise filtration of PM0.26 pollutants, where the waste PI short fibers were utilized as raw material. The resultant composite fibrous membranes, featuring thin fiber diameter (~150 nm), low areal density (<0.8 g m-2), large porosity, and highly tortuous airflow channels with uniform poresize distribution, possessed excellent mechanical property with tensile strength of 4.95 MPa (twice that of pristine PAN), high thermal durability as well as remarkable filtration performance for ultrafine NaCl aerosol particles (≤0.26 µm) even after multiple filtration tests at high airflow velocity of 14.1 cm s-1. The deepened aperture channels inside three-dimensional sub-micro fibrous membranes are tortuous enough for capturing ultrafine PMs from the airstream mainly via diffusion, interception, and impaction mechanisms, and the reported large-scale fabrication of cost-effective homogeneous PAN/PI fibrous filter media is promising for industrial production and commercial applications.
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Affiliation(s)
- Mengjuan Zhou
- Key Laboratory of Textile Science and Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Min Hu
- Key Laboratory of Textile Science and Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Zhenzhen Quan
- Key Laboratory of Textile Science and Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China; Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China
| | - Hongnan Zhang
- Key Laboratory of Textile Science and Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Xiaohong Qin
- Key Laboratory of Textile Science and Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China.
| | - Rongwu Wang
- Key Laboratory of Textile Science and Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China.
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China
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Canalli Bortolassi AC, Guerra VG, Aguiar ML, Soussan L, Cornu D, Miele P, Bechelany M. Composites Based on Nanoparticle and Pan Electrospun Nanofiber Membranes for Air Filtration and Bacterial Removal. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1740. [PMID: 31817692 PMCID: PMC6956291 DOI: 10.3390/nano9121740] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 12/02/2019] [Accepted: 12/03/2019] [Indexed: 12/11/2022]
Abstract
Often, solid matter is separated from particle-laden flow streams using electrospun filters due to their high specific surface area, good ability to capture aerial particulate matter, and low material costs. Moreover, electrospinning allows incorporating nanoparticles to improve the filter's air filtration efficiency and bacterial removal. Therefore, a new, improved polyacrylonitrile (PAN) nanofibers membrane that could be used to remove air pollutants and also with antibacterial activity was developed. We engineered three different filters that are characterized by the different particles embedded in the PAN nanofibers: titanium dioxide (TiO2), zinc oxide (ZnO), and silver (Ag). Then, their filtration performance was assessed by quantifying the filtration of sodium chloride (NaCl) aerosol particles of 9 to 300 nm in diameter using a scanning mobility particle sizer. The TiO2_F filter displayed the smallest fiber diameter and the highest filtration efficiency (≈100%). Conversely, the Ag_F filter showed the highest quality factor (≈0.06 Pa-1) because of the lower air pressure drop. The resulting Ag_F nanofibers displayed a very good antibacterial activity using an Escherichia coli suspension (108 CFU/mL). Moreover, the quality factor of these membranes was higher than that of the commercially available nanofiber membrane for air filtration.
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Affiliation(s)
- Ana Cláudia Canalli Bortolassi
- Departamento de Engenharia Química, Universidade Federal de São Carlos–UFSCar, Rodovia Washington Luiz, km 235–SP 310, São Carlos 13565-905, Brazil; (A.C.C.B.); (V.G.G.); (M.L.A.)
| | - Vádila Giovana Guerra
- Departamento de Engenharia Química, Universidade Federal de São Carlos–UFSCar, Rodovia Washington Luiz, km 235–SP 310, São Carlos 13565-905, Brazil; (A.C.C.B.); (V.G.G.); (M.L.A.)
| | - Mônica Lopes Aguiar
- Departamento de Engenharia Química, Universidade Federal de São Carlos–UFSCar, Rodovia Washington Luiz, km 235–SP 310, São Carlos 13565-905, Brazil; (A.C.C.B.); (V.G.G.); (M.L.A.)
| | - Laurence Soussan
- Institut Européen des Membranes, IEM–UMR 5635, ENSCM, CNRS, Univ Montpellier, 34070 Montpellier, France; (L.S.); (D.C.); (P.M.)
| | - David Cornu
- Institut Européen des Membranes, IEM–UMR 5635, ENSCM, CNRS, Univ Montpellier, 34070 Montpellier, France; (L.S.); (D.C.); (P.M.)
| | - Philippe Miele
- Institut Européen des Membranes, IEM–UMR 5635, ENSCM, CNRS, Univ Montpellier, 34070 Montpellier, France; (L.S.); (D.C.); (P.M.)
| | - Mikhael Bechelany
- Institut Européen des Membranes, IEM–UMR 5635, ENSCM, CNRS, Univ Montpellier, 34070 Montpellier, France; (L.S.); (D.C.); (P.M.)
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Ryšánek P, Benada O, Tokarský J, Syrový M, Čapková P, Pavlík J. Specific structure, morphology, and properties of polyacrylonitrile (PAN) membranes prepared by needleless electrospinning; Forming hollow fibers. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 105:110151. [DOI: 10.1016/j.msec.2019.110151] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 08/20/2019] [Accepted: 08/29/2019] [Indexed: 01/03/2023]
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Al-Attabi R, Rodriguez-Andres J, Schütz JA, Bechelany M, des Ligneris E, Chen X, Kong L, Morsi YS, Dumée LF. Catalytic electrospun nano-composite membranes for virus capture and remediation. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.115806] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Yang X, Pu Y, Li S, Liu X, Wang Z, Yuan D, Ning X. Electrospun Polymer Composite Membrane with Superior Thermal Stability and Excellent Chemical Resistance for High-Efficiency PM2.5 Capture. ACS APPLIED MATERIALS & INTERFACES 2019; 11:43188-43199. [PMID: 31644871 DOI: 10.1021/acsami.9b15219] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
To address the challenge of high-temperature air filtration, a novel electreted polysulfonamide/polyacrylonitrile-boehmite (PSA/PAN-B) composite nanofiber based filter was developed via electrospinning for effective high-temperature dust removal. In this study, the spinnability of PSA was greatly improved by adding a small amount of PAN as an auxiliary polymer, and the introduction of a boehmite electret further significantly reinforced the properties of PSA fibers. As a result, the PSA/PAN-B membrane exhibited a high filtration efficiency (up to 99.52 ± 0.32%), low pressure drop (45.16 ± 1.39 Pa), excellent flexibility, good mechanical properties, high thermal stability (up to approximately 300 °C), and superior chemical resistance. Through data analysis and 3D simulation, the important benefits of the boehmite electret in the optimization of the PSA fibrous membrane performance were determined: it increases the charge storage capacity, constructs a rough surface morphology, improves the specific surface area, and enhances the mechanical properties. More importantly, the PSA/PAN-B film possessed a robust PM2.5 purification capacity, and the particulate matter removal efficiency was kept unchanged after high-temperature, acid, or alkali treatment-a performance derived from the intrinsic molecular structure of PSA. The PSA/PAN-B composite fibrous membrane, with excellent comprehensive properties, is a promising candidate for air filters, especially in harsh environments, further broadening the applications of PSA and providing new insight into the design of high-performance filters with high-temperature and corrosion resistance.
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Affiliation(s)
- Xue Yang
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing , Qingdao University , Qingdao 266071 , Shandong , People's Republic of China
| | - Yi Pu
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing , Qingdao University , Qingdao 266071 , Shandong , People's Republic of China
| | - Shuxia Li
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing , Qingdao University , Qingdao 266071 , Shandong , People's Republic of China
| | - Xiaofang Liu
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing , Qingdao University , Qingdao 266071 , Shandong , People's Republic of China
| | - Zheshan Wang
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing , Qingdao University , Qingdao 266071 , Shandong , People's Republic of China
| | - Ding Yuan
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing , Qingdao University , Qingdao 266071 , Shandong , People's Republic of China
| | - Xin Ning
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing , Qingdao University , Qingdao 266071 , Shandong , People's Republic of China
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26
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Wang B, Sun Z, Sun Q, Wang J, Du Z, Li C, Li X. The preparation of bifunctional electrospun air filtration membranes by introducing attapulgite for the efficient capturing of ultrafine PMs and hazardous heavy metal ions. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 249:851-859. [PMID: 30954833 DOI: 10.1016/j.envpol.2019.03.122] [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: 12/12/2018] [Revised: 03/28/2019] [Accepted: 03/29/2019] [Indexed: 05/29/2023]
Abstract
The comprehensive sources of particulate matter (PM) require air purification materials to possess both high filtration efficiencies and low air resistances in an effort to provide healthcare. However, the assembly of multiple-layered filters with different functions leads to high pressure drop and high operating cost. Therefore, a multifunctional air filter that can provide excellent air filtration capacity and healthcare is highly desired. Here, a novel bifunctional polyacrylonitrile/attapulgite hierarchical-structured filter with low air resistance and high adsorption capacity was designed and fabricated by embedding attapulgite nanorods during a facile electrospinning process. The hierarchical polyacrylonitrile/attapulgite membranes showed only a ∼64 Pa resistance for 0.1 μm PM. Another benefit of using the attapulgite nanorods is an adsorption effect for hazardous heavy metal ions that accompany airborne ultrafine PMs. Thereby this hierarchical membrane simultaneously exhibits an enhanced filtration performance and hazardous protection ability. Furthermore, due to the electret effect of the attapulgite nanorods, the surface potential of the membrane remains at above 2.2 kV after 600 min of continuous use, which could improve the air filtration efficiency and ensure the long-term service life of the filters. This work may provide a new approach for the design and development of multifunctional air filters for simultaneously capturing ultrafine PMs and any other accompanying hazardous chemicals.
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Affiliation(s)
- Bin Wang
- School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing, 100029, China; Beijing Key Laboratory of Clothing Materials R & D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, Beijing Institute of Fashion Technology, Beijing, 100029, China
| | - Zhiming Sun
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Qing Sun
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Jie Wang
- School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing, 100029, China
| | - Zongxi Du
- School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing, 100029, China
| | - Congju Li
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Xiuyan Li
- School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing, 100029, China.
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Cao M, Gu F, Rao C, Fu J, Zhao P. Improving the electrospinning process of fabricating nanofibrous membranes to filter PM2.5. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 666:1011-1021. [PMID: 30970468 DOI: 10.1016/j.scitotenv.2019.02.207] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 02/13/2019] [Accepted: 02/13/2019] [Indexed: 05/12/2023]
Abstract
To mitigate PM2.5 emissions is becoming a pressing concern, because these particles pose a threat to public health. Evidence shows that bead-free nanofiber with diameter of <100 nm is more likely to capture the PM2.5, however, currently it is impossible to fabricate bead-free nanofiber with such diameter without introduction of other substances. To fabricate bead-free polyacrylonitrile (PAN) nanofibers with diameter of <100 nm, we improved the electrospinning process of membrane fabrication via design of experiment (DOE), and we then used these nanofibers to filter PM2.5 emissions from burning cigarettes and fused deposition modeling (FDM) three-dimensional (3D) printing. The DOE was based on a L27 (313) orthodoxy array, which consists of six controllable factors, that is, the concentration of solution, the spinning voltage, the rotating speed, the tip-to-collector distance, the flow rate of the syringe pump, and the electrospinning temperature, each of them has three levels. The results showed that the nanofibers of the least diameter (i.e., 77 nm) can be fabricated under the following condition: 8 wt% PAN solution, 12 kV voltage, 5000 r/min, 12 cm tip-to-collector distance, 0.6 ml/h flow rate, and 50 °C electrospinning temperature. Range analysis and analysis of variance (ANOVA) showed that the concentration of PAN solution has the most significant effect on the diameter, and their values are positively correlated. An examination in a two-chamber filtering device showed the PAN membrane with the least fiber diameter has a PM2.5 filtration efficiency of 99.26%. A filtration test on standard FDM 3D printing process showed the membrane has a PM2.5 removal efficiency of 81.16%. This work could mitigate PM2.5 emissions from cigarette tobacco and FDM 3D printing, and it would be used to other scenarios, such as industrial and traffic emissions.
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Affiliation(s)
- Mingyi Cao
- The State Key Laboratory of Fluid Power and Mechatronic Systems, College of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China; The Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, College of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Fu Gu
- The State Key Laboratory of Fluid Power and Mechatronic Systems, College of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China; Department of Industrial and System Engineering, Zhejiang University, Hangzhou 310027, China; National Institute of Innovation Management, Zhejiang University, Hangzhou 310027, China
| | - Chengchen Rao
- The State Key Laboratory of Fluid Power and Mechatronic Systems, College of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China; The Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, College of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jianzhong Fu
- The State Key Laboratory of Fluid Power and Mechatronic Systems, College of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China; The Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, College of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Peng Zhao
- The State Key Laboratory of Fluid Power and Mechatronic Systems, College of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China; The Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, College of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China.
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Al-Attabi R, Morsi Y, Kujawski W, Kong L, Schütz JA, Dumée LF. Wrinkled silica doped electrospun nano-fiber membranes with engineered roughness for advanced aerosol air filtration. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.01.049] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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29
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Efficient nanoparticles removal and bactericidal action of electrospun nanofibers membranes for air filtration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 102:718-729. [PMID: 31147044 DOI: 10.1016/j.msec.2019.04.094] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 04/26/2019] [Accepted: 04/29/2019] [Indexed: 01/10/2023]
Abstract
Human exposure to air pollution and especially to nanoparticles is increasing due to the combustion of carbon-based energy vectors. Fibrous filters are among the various types of equipment potentially able to remove particles from the air. Nanofibers are highly effective in this area; however, their utilization is still a challenge due to the lack of studies taking into account both nanoparticle collection efficiency and antibacterial effect. The aim of this work is to produce and evaluate novel silver/polyacrylonitrile (Ag/PAN) electrospun fibers deposited on a nonwoven substrate to be used as air filters to remove nanoparticles from the air and also showing antibacterial activity. In order to determine the optimum manufacturing conditions, the effects of several electrospinning process parameters were analyzed such as solution concentration, collector to needle distance, flow rate, voltage, and duration. Ag/PAN nanofibers were characterized by X-ray diffraction (XRD), Transmission Electron Microscopy (TEM), Fourier Transform Infra-Red spectroscopy (FTIR), Energy-dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), and Scanning Electron Microscopy (SEM). In addition, filtration performances were determined by measuring the pressure drop and collection efficiency of sodium chloride (NaCl) aerosol particles (9 to 300 nm diameters) using Scanning Mobility Particle Sizers (SMPS). Filters with high filtration efficiency (≈100%) and high-quality factor (≈0.05 Pa-1) were obtained even adding different concentrations of Ag nanoparticles (AgNPs) to PAN nanofibers. The resultant Ag/PAN nanofibers showed excellent antibacterial activity against 104 CFU/mL E. coli bacteria.
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30
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Cai RR, Lu H, Zhang LZ. Evaluation the effect of fiber alignment on particle collection performance of mechanical/electret filters based on Voronoi tessellations. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2018.12.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Rojas J, Ardila-Rodríguez L, Diniz M, Gonçalves M, Ribeiro B, Rezende M. Highly porous multiwalled carbon nanotube buckypaper using electrospun polyacrylonitrile nanofiber as a sacrificial material. Heliyon 2019; 5:e01386. [PMID: 30963122 PMCID: PMC6434183 DOI: 10.1016/j.heliyon.2019.e01386] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 02/06/2019] [Accepted: 03/15/2019] [Indexed: 11/28/2022] Open
Abstract
Polyacrylonitrile (PAN) was solubilized in N,N-dimethyl formamide (DMF) and the electrospinning process has been employed to obtain PAN nanofibers (PF). Multiwalled carbon nanotubes (MWCNT) were dispersed with the aid of Triton X-100 surfactant and subsequently centrifugated. Buckypapers (BP/PF) were prepared by vacuum filtration procedure of MWCNT suspension supernatant stacking four PF layers over a nylon membrane. The PF removal was carried out by immersing the BP/PF system in DMF and removal periods of 10 and 30 min were evaluated. Scanning electron microscopy (SEM) has not shown any PAN residue in the MWCNT network resulting in highly porous BP. However, by Fourier transform infrared spectroscopy (FT-IR) a PAN band was found around of 2243 cm-1 corresponding to nitrile group (C≡N). Besides, PAN leftover was evidenced by thermogravimetric analysis (TGA), high-resolution transmission electron microscopy (HR-TEM), electrical characterization through four-point probe, nitrogen adsorption at 77 K, and X-ray diffraction (XRD).
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Affiliation(s)
- J.A. Rojas
- Federal University of São Paulo (UNIFESP), Institute of Science and Technology, São José dos Campos, SP, 12231280, Brazil
| | - L.A. Ardila-Rodríguez
- Technological Institute of Aeronautics (ITA), Division of Fundamental Science, São José dos Campos, SP, 12228, Brazil
| | - M.F. Diniz
- Departamento de Ciência e Tecnologia Aeroespacial (DCTA), Instituto de Aeronáutica e Espaço (IAE), São José dos Campos, SP, 12228904, Brazil
| | - M. Gonçalves
- Federal University of São Paulo (UNIFESP), Institute of Science and Technology, São José dos Campos, SP, 12231280, Brazil
| | - B. Ribeiro
- Federal University of São Paulo (UNIFESP), Institute of Science and Technology, São José dos Campos, SP, 12231280, Brazil
| | - M.C. Rezende
- Federal University of São Paulo (UNIFESP), Institute of Science and Technology, São José dos Campos, SP, 12231280, Brazil
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Al-Attabi R, Morsi Y, Schütz JA, Dumée LF. One-pot synthesis of catalytic molybdenum based nanocomposite nano-fiber membranes for aerosol air remediation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 647:725-733. [PMID: 30092529 DOI: 10.1016/j.scitotenv.2018.08.050] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 08/03/2018] [Accepted: 08/04/2018] [Indexed: 05/29/2023]
Abstract
The development of fibrous air filters exhibiting high air filtration efficiency, low energy consumption, and self-cleaning properties is a critical challenge to generate the next generation of resilient air filtration systems. Nano-fibrous mats typically exhibit higher particle capture efficiency but may also lead to higher airflow resistance compared to macro-fibrous materials due to their tighter structure. In this paper, novel catalytic membranes mats were fabricated through a one-pot synthesis from ammonium tetrathiomolybdate (ATTM) doped poly(acrylonitrile) (PAN) nanofibers for sub-micron diameter aerosol particle removal. The presence of ATTM as a dopant in conjunction with a PAN polymeric matrix was found to not only enhance the air filtration performance by increasing aerosol particle removal down to 300 nm, but also increase the photocatalytic properties of the PAN material. The enhanced separation properties compared to bare polymeric PAN nanofibrous membranes were attributed to surface nanotexturation of the fibers, leading to protrusions and pores across the nano-fiber structures, thus leading to more permeable and lightweight membranes with higher particle capture capacities. The samples were benchmarked against commercial glass fiber air filters and found to offer higher filtration efficiency, lower pressure drop, and higher quality factor than the commercial filters. Specifically, the quality factors of the catalytic nano-fiber membranes were found to be up to four times higher than that of the benchmarked commercial air filters for PM2.5 particles, while two times higher for 300 nm sized contaminants. The presence of the ATTM across the PAN matrix was also found to enhance the photocatalytic activity of the membranes by up to 130% compared to the bare PAN reference nanofibers. This novel strategy opens avenues to engineering advanced multifunctional catalytic membranes, to capture toxic particulate matter from air while offering self-cleaning properties when exposed to sunlight.
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Affiliation(s)
- Riyadh Al-Attabi
- Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Vic 3122, Australia; Deakin University, Geelong, Institute for Frontier Materials, Waurn Ponds, Victoria 3216, Australia; Middle Technical University, Al-Za'franiya, Baghdad 10074, Iraq.
| | - Yosry Morsi
- Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Vic 3122, Australia
| | - Jürg A Schütz
- CSIRO Manufacturing, Waurn Ponds, Victoria 3216, Australia
| | - Ludovic F Dumée
- Deakin University, Geelong, Institute for Frontier Materials, Waurn Ponds, Victoria 3216, Australia.
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Vanangamudi A, Dumée LF, Duke MC, Yang X. Dual Functional Ultrafiltration Membranes with Enzymatic Digestion and Thermo-Responsivity for Protein Self-Cleaning. MEMBRANES 2018; 8:E85. [PMID: 30235868 PMCID: PMC6161312 DOI: 10.3390/membranes8030085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 09/11/2018] [Accepted: 09/17/2018] [Indexed: 06/08/2023]
Abstract
Controlling surface⁻protein interaction during wastewater treatment is the key motivation for developing functionally modified membranes. A new biocatalytic thermo-responsive poly vinylidene fluoride (PVDF)/nylon-6,6/poly(N-isopropylacrylamide)(PNIPAAm) ultrafiltration membrane was fabricated to achieve dual functionality of protein-digestion and thermo-responsive self-cleaning. The PVDF/nylon-6,6/PNIPAAm composite membranes were constructed by integrating a hydrophobic PVDF cast layer and hydrophilic nylon-6,6/PNIPAAm nanofiber layer on to which trypsin was covalently immobilized. The enzyme immobilization density on the membrane surface decreased with increasing PNIPAAm concentration, due to the decreased number of amine functional sites. An ultrafiltration study was performed using the synthetic model solution containing BSA/NaCl/CaCl2, where the PNIPAAm containing biocatalytic membranes demonstrated a combined effect of enzymatic and thermo-switchable self-cleaning. The membrane without PNIPAAm revealed superior fouling resistance and self-cleaning with an RPD of 22%, compared to membranes with 2 and 4 wt % PNIPAAm with 26% and 33% RPD, respectively, after an intermediate temperature cleaning at 50 °C, indicating that higher enzyme density offers more efficient self-cleaning than the combined effect of enzyme and PNIPAAm at low concentration. The conformational volume phase transition of PNIPAAm did not affect the stability of immobilized trypsin on membrane surfaces. Such novel surface engineering design offer a promising route to mitigate surface⁻protein contamination in wastewater applications.
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Affiliation(s)
- Anbharasi Vanangamudi
- Institute for Sustainable Industries and Liveable Cities, College of Engineering and Science, Victoria University, P.O. Box 14428, Melbourne, VIC 8001, Australia.
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Geelong, VIC 3216, Australia.
| | - Ludovic F Dumée
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Geelong, VIC 3216, Australia.
| | - Mikel C Duke
- Institute for Sustainable Industries and Liveable Cities, College of Engineering and Science, Victoria University, P.O. Box 14428, Melbourne, VIC 8001, Australia.
| | - Xing Yang
- Institute for Sustainable Industries and Liveable Cities, College of Engineering and Science, Victoria University, P.O. Box 14428, Melbourne, VIC 8001, Australia.
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Performance Assessment of Ordered Porous Electrospun Honeycomb Fibers for the Removal of Atmospheric Polar Volatile Organic Compounds. NANOMATERIALS 2018; 8:nano8050350. [PMID: 29883432 PMCID: PMC5977364 DOI: 10.3390/nano8050350] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 05/14/2018] [Accepted: 05/15/2018] [Indexed: 11/29/2022]
Abstract
This study explored a new facile method of preparing ordered porous electrospun honeycomb fibers to obtain the most promising composites for maximal adsorption of volatile organic compounds (VOCs). The self-assembly ordered porous material (OPM) and polyacrylonitrile (PAN) were formulated into a blend solution to prepare honeycomb fibers. SEM and TEM images showed that OPM was effectively bonded in PAN fibers because of the composite’s structure. Acetone was used as a model to assess the VOC adsorption performances of electrospun honeycomb fibers with different OPM contents. Experimental results revealed that the adsorption capacity of honeycomb fibers increased with the increase of loaded OPM within the PAN fibers. The highest adsorption capacity was 58.2 μg g−1 by the fibers containing with 60% OPM in weight. After several recycling times, the adsorption capacities of the reused honeycomb fibers were almost the same with the fresh fibers. This finding indicated that the electrospun honeycomb fibers have potential application in removing VOCs in the workplace, and promote the performance of masks for odor removal.
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