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Zhu G, Wang C, Yang T, Gao N, Zhang Y, Zhu J, He X, Shao J, Li S, Zhang M, Zhang S, Gao J, Xu H. Bio-inspired gradient poly(lactic acid) nanofibers for active capturing of PM 0.3 and real-time respiratory monitoring. JOURNAL OF HAZARDOUS MATERIALS 2024; 474:134781. [PMID: 38824775 DOI: 10.1016/j.jhazmat.2024.134781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 05/17/2024] [Accepted: 05/30/2024] [Indexed: 06/04/2024]
Abstract
The concept of bio-inspired gradient hierarchies, in which the well-defined MOF nanocrystals serve as active nanodielectrics to create electroactive shell at poly(lactic acid) (PLA) nanofibers, is introduced to promote the surface activity and electroactivity of PLA nanofibrous membranes (NFMs). The strategy enabled significant refinement of PLA nanofibers during coaxial electrospinning (∼40 % decline of fiber diameter), accompanied by remarkable increase of specific surface area (nearly 1.5 m2/g), porosity (approximately 85 %) and dielectric constants for the bio-inspired gradient PLA (BG-PLA) NFMs. It largely boosted initial electret properties and electrostatic adsorption capability of BG-PLA NFMs, as well as charge regeneration by TENG mechanisms even under high-humidity environment. The BG-PLA NFMs thus featured exceptionally high PM0.3 filtration efficiencies with well-controlled air resistance (94.3 %, 163.4 Pa, 85 L/min), in contrast to the relatively low efficiency of only 80.0 % for normal PLA. During the application evaluation of outdoor air purification, excellent long-term filtering performance was demonstrated for the BG-PLA for up to 4 h (nearly 98.0 %, 53 Pa), whereas normal PLA exhibited a gradually declined filtration efficiency and an increased pressure drop. Moreover, the BG-PLA NFMs of increased electroactivity were ready to generate tribo-output currents as driven by respiratory vibrations, which enabled real-time monitoring of electrophysiological signals. This bio-inspired gradient strategy opens up promising pathways to engender biodegradable nanofibers of high surface activity and electroactivity, which has significant implications for intelligent protective membranes.
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Affiliation(s)
- Guiying Zhu
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Cunmin Wang
- School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China
| | - Ting Yang
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Na Gao
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Yifan Zhang
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Jintuo Zhu
- School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China; Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China
| | - Xinjian He
- School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China; Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China
| | - Jiang Shao
- School of Architecture & Design, China University of Mining and Technology, Xuzhou 221116, China; Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China
| | - Shihang Li
- Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, Carbon Neutrality Institute, China University of Mining and Technology, Xuzhou 221008, China; Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China
| | - Mingming Zhang
- China Academy of Safety Science & Technology, 100012 Beijing, China
| | - Shenghui Zhang
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Jiefeng Gao
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 272100, China
| | - Huan Xu
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China; College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Chengdu 610065, China; Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China.
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Zhao Y, Ming J, Cai S, Wang X, Ning X. One-step fabrication of polylactic acid (PLA) nanofibrous membranes with spider-web-like structure for high-efficiency PM 0.3 capture. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133232. [PMID: 38141315 DOI: 10.1016/j.jhazmat.2023.133232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/28/2023] [Accepted: 12/09/2023] [Indexed: 12/25/2023]
Abstract
High-efficiency air filters are in high demand to protect human health from the threat of ultrafine particulate matters (PM). However, most commercial air filters are less effective for PM0.3 capture and/or still suffer from undesirable pressure drops. They are also typically petroleum-based. Herein, a double-jet synchronous electrospinning technology was demonstrated to fabricate spider-web-like polylactic acid (PLA) nanofibrous membranes (SPNM) in one step. The properties of spinning solutions were regulated to construct favorable multi-scale nanofiber and bead structures that mimicked the structural units in spider-webs. The as-prepared SPNM exhibited excellent filtration efficiency (99.87 %) and high quality factor (0.321 Pa-1) against the PM0.3, while presenting an attractively low pressure drop (19 Pa). Additionally, the filtration performance of SPNM was almost completely preserved during 10-cycle tests and the 6-month long-term tests, showing excellent function stability and durability. Benefiting from its good hydrophobicity (WCA = 143.2°), SPNM also presented a satisfactory filtration efficiency (>99.37 %) with low pressure drop (18 Pa) at an environment with humidity at 90 % against PM0.3. Furthermore, the unique structure increased the mechanical strength of SPNM, facilitating the processability for practical applications. Overall, this work may shed light on a promising approach for developing biomass-based, highly efficient filtration materials with hierarchical structures.
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Affiliation(s)
- Yintao Zhao
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, Shandong, China; Shandong Center for Engineered Nonwovens, Qingdao University, Qingdao 266071, Shandong, China
| | - Jinfa Ming
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, Shandong, China; Shandong Center for Engineered Nonwovens, Qingdao University, Qingdao 266071, Shandong, China
| | - Shunzhong Cai
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, Shandong, China; Shandong Center for Engineered Nonwovens, Qingdao University, Qingdao 266071, Shandong, China
| | - Xuefang Wang
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, Shandong, China; Shandong Center for Engineered Nonwovens, Qingdao University, Qingdao 266071, Shandong, China.
| | - Xin Ning
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, Shandong, China; Shandong Center for Engineered Nonwovens, Qingdao University, Qingdao 266071, Shandong, China; State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, Shandong, China.
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Yang M, Gong X, Wang S, Tian Y, Yin X, Wang X, Yu J, Zhang S, Ding B. Two-Dimensional Nanofibrous Networks by Superspreading-Based Phase Inversion for High-Efficiency Separation. NANO LETTERS 2023; 23:10579-10586. [PMID: 37934045 DOI: 10.1021/acs.nanolett.3c03486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
Two-dimensional (2D) nanomaterials have been widely applied as building blocks of nanoporous materials for high-precision separations. However, most existing 2D nanomaterials suffer from poor continuity and a lack of interior linking, resulting in deteriorated performance when assembled into macroscopic bulk structures. Here, a unique superspreading-based phase inversion technique is proposed to directly construct 2D nanofibrous networks (NFNs) from a polymer solution. By tailoring capillary behavior, polymer solution droplets evolve into ultrathin liquid films through superspreading; manipulating phase instability, subsequently, enables the liquid film to phase invert into continuous nanostructured networks. The assembled single-layered NFNs possess integrated structural superiorities of 1D nanoscale fiber diameter (∼40 nm) and 2D lateral infinity, exhibiting a weblike nanoarchitecture with extremely small through-pores (∼100 nm). Our NFNs show remarkable performances in air filtration (PM0.3 removal) and water purification (microfiltration level). This creation of such attractive 2D fibrous nanomaterials can pave the way for versatile high-performance separation applications.
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Affiliation(s)
- Ming Yang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Xiaobao Gong
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Sai Wang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Yucheng Tian
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Xia Yin
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Xianfeng Wang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Shichao Zhang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Bin Ding
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
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Tronville P, Gentile V, Marval J. Guidelines for measuring and reporting particle removal efficiency in fibrous media. Nat Commun 2023; 14:5323. [PMID: 37658063 PMCID: PMC10474009 DOI: 10.1038/s41467-023-41154-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Accepted: 08/23/2023] [Indexed: 09/03/2023] Open
Abstract
Adopting standardized and reliable methodologies to accurately measure particle removal efficiency when developing fibrous materials for controlling airborne contamination is crucial. Here, the authors recommend best practices for experimental assessments and reporting to ensure a reliable evaluation of new airborne particle filtration media and technologies.
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Affiliation(s)
- Paolo Tronville
- Department of Energy, Politecnico di Torino, Corso Duca degli Abruzzi 24, Turin, Italy.
| | - Vincenzo Gentile
- Department of Energy, Politecnico di Torino, Corso Duca degli Abruzzi 24, Turin, Italy
| | - Jesus Marval
- Air Quality and Aerosol Metrology Group, Atmospheric Environmental Science Department, National Physical Laboratory (NPL), Hampton Road, Teddington, TW11 0LW, United Kingdom
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Su C, Zhang L, Zhang Y, Huang X, Ye Y, Xia Y, Gong Z, Qin X, Liu Y, Guo S. P(VDF-TrFE)/BaTiO 3 Nanofibrous Membrane with Enhanced Piezoelectricity for High PM 0.3 Filtration and Reusable Face Masks. ACS APPLIED MATERIALS & INTERFACES 2023; 15:5845-5855. [PMID: 36652453 DOI: 10.1021/acsami.2c19569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
In the background of air pollution and regular COVID-19 prevention, personal protective masks are necessary for our daily life. However, protective masks with high PM0.3 filtration usually have poor air permeability and are mostly disposable, leading to a heavy burden on the environment. In this work, a reusable membrane based on piezoelectric poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] nanofibers embedded with BaTiO3 nanoparticles (BTO NPs) was developed. The P(VDF-TrFE)/BTO composite nanofibers not only have enhanced piezoelectricity and surface polarity but also have reduced diameters that could be beneficial for electrostatic adhesion, pole-polar interactions, and mechanical sieving to increase the PM0.3 capture capacity. Moreover, the BTO NPs also improved the charge storage capacity of the composite membrane, which could further enhance the PM0.3 filtration efficiency after corona treatment. The piezoelectric mask based on P(VDF-TrFE)/BTO composite nanofibers has high filtration efficiencies of 96% for PM0.3 and 98% for bacteria, while the pressure drop was only 182 Pa, which is lower than the commercial N95 standard of 343.2 Pa. Furthermore, the piezoelectric mask has a long and stable filtration performance after 5 cycles of 75% alcohol disinfection, demonstrating that the P(VDF-TrFE)/BTO composite membrane has a potential application in personal protective masks with comfortable and reusable properties.
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Affiliation(s)
- Cuicui Su
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan430071, China
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan430072, China
| | - Lingling Zhang
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan430071, China
| | - Yuanzheng Zhang
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan430072, China
| | - Xiaocheng Huang
- Department of Materials Science and Engineering, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo315211, China
| | - Yumin Ye
- Department of Materials Science and Engineering, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo315211, China
| | - Yu Xia
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan430072, China
| | - Zhiyi Gong
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan430072, China
| | - Xiaojuan Qin
- Department of Materials and Chemical Engineering, Taiyuan University, Taiyuan030032, China
| | - Yichao Liu
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan430071, China
| | - Shishang Guo
- Hubei Yangtze Memory Laboratories, Wuhan430205, China
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan430072, China
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Cheng Z, Wang H, Li Z, Yang C, Zhang B, Zhou Y, Wang Y, Jia C, Li L, Wu H. Processing Nomex Nanofibers by Ionic Solution Blow-Spinning for Efficient High-Temperature Exhausts Treatment. ADVANCED FIBER MATERIALS 2022; 5:497-513. [PMID: 36530771 PMCID: PMC9735215 DOI: 10.1007/s42765-022-00231-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 10/26/2022] [Indexed: 06/17/2023]
Abstract
UNLABELLED Hard-to-dissolve polymers provide next-generation alternatives for high-performance filter materials owing to their intrinsically high chemical stability, superior mechanical performance, and excellent high-temperature resistance. However, the mass production of hard-to-dissolve nanofibers still remains a critical challenge. A simple, scalable, and low-cost ionic solution blow-spinning method has herein been provided for the large-scale preparation of hard-to-dissolve Nomex polymeric nanofibers with an average diameter of nearly 100 nm. After rapidly dissolving Nomex microfibers in the lithium chloride/dimethylacetamide (LiCl/DMAc) solution system, the conductive solution can be stably and conductivity-independently processed into nanofibers. The method optimizes electrospinning and avoids spinnability degradation and potential safety hazards caused by high electrical conductivity. Owing to nanofibrous structure and high dipole moment, Nomex nanofibrous filters show a stable high filtration efficiency of 99.92% for PM0.3 with a low areal density of 4.6 g m-2, as well as a low-pressure drop of 189.47 Pa. Moreover, the flame-retardant filter can work at 250 °C and 280 °C for a long and short time without shrinking or burning, respectively, exhibiting a high filtration efficiency of 99.50% for PM0.3-10.0. The outstanding properties and low cost enable the efficient capture of PM from various high-temperature exhausts, making Nomex nanofibrous membrane an even more ideal industrial-grade air filter than polypropylene, polytetrafluoroethylene, polyimide, and ceramic nanofibrous filters. GRAPHICAL ABSTRACT Hard-to-dissolve nanofibers provide alternatives for high-efficiency and low-resistant air filtration but are limited by the universality and economics of fabrication methods. A scalable and efficient ionic solution blow-spinning strategy has herein been proposed in preparing hard-to-dissolve nanofibrous filters. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s42765-022-00231-x.
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Affiliation(s)
- Zekun Cheng
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084 China
| | - Haiyang Wang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084 China
| | - Ziwei Li
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084 China
| | - Chong Yang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084 China
| | - Baopu Zhang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084 China
| | - Yiqian Zhou
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084 China
| | - Yuxuan Wang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084 China
| | - Chao Jia
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620 China
| | - Lei Li
- National Engineering Research Center of Electric Vehicles, Beijing Institute of Technology, Beijing, 100081 China
| | - Hui Wu
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084 China
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Sun Z, Huang Z, Guo L, Hu S, Wang H, Meng L, Tang M, Qi H. Acetylated tunicate nanocellulose-based high-efficient air filter media with antibacterial property. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Application of microfibrillated fibers in robust and reusable air filters with long service time in the ambient with high oily aerosols concentration. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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9
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Metal-organic frameworks decorated wood aerogels for efficient particulate matter removal. J Colloid Interface Sci 2022; 629:182-188. [DOI: 10.1016/j.jcis.2022.08.144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 08/22/2022] [Accepted: 08/24/2022] [Indexed: 11/19/2022]
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