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Sun Z, Kong Y, Lan L, Meng Y, You T, Pauer R, Wang H, Zhang Y, Tang M, deMello A, Liang Y, Hu J, Wang J. A High Efficiency, Low Resistance Antibacterial Filter Formed by Dopamine-Mediated In Situ Deposition of Silver onto Glass Fibers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2301074. [PMID: 38659180 DOI: 10.1002/smll.202301074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/13/2024] [Indexed: 04/26/2024]
Abstract
The coating of filter media with silver is typically achieved by chemical deposition and aerosol processes. Whilst useful, such approaches struggle to provide uniform coating and are prone to blockage. To address these issues, an in situ method for coating glass fibers is presented via the dopamine-mediated electroless metallization method, yielding filters with low air resistance and excellent antibacterial performance. It is found that the filtration efficiency of the filters is between 94 and 97% and much higher than that of silver-coated filters produced using conventional dipping methods (85%). Additionally, measured pressure drops ranged between 100 and 150 Pa, which are lower than those associated with dipped filters (171.1 Pa). Survival rates of Escherichia coli and Bacillus subtilis bacteria exposed to the filters decreased to 0 and 15.7%±1.49, respectively after 2 h, with no bacteria surviving after 6 h. In contrast, survival rates of E. coli and B. subtilis bacteria on the uncoated filters are 92.5% and 89.5% after 6 h. Taken together, these results confirm that the in situ deposition of silver onto fiber surfaces effectively reduces pore clogging, yielding low air resistance filters that can be applied for microbial filtration and inhibition in a range of environments.
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Affiliation(s)
- Zhaoxia Sun
- School of Light Industry and Engineering, South China University of Technology, Guangzhou, 510640, China
- Institute of Environmental Engineering, ETH Zürich, Zürich, 8093, Switzerland
- Laboratory for Advanced Analytical Technologies, Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, 8600, Switzerland
| | - Ying Kong
- Institute of Environmental Engineering, ETH Zürich, Zürich, 8093, Switzerland
- Laboratory for Advanced Analytical Technologies, Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, 8600, Switzerland
| | - Liang Lan
- School of Light Industry and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Yingchao Meng
- Department of Chemistry & Applied Biosciences, ETH Zürich, Zürich, 8093, Switzerland
| | - Tianle You
- School of Light Industry and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Robin Pauer
- Laboratory for Advanced Analytical Technologies, Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, 8600, Switzerland
| | - Hao Wang
- National Key Laboratory of Nuclear, Biological and Chemical Disaster Protection, Academy of Chemical Prevention, Academy of Military Sciences, Beijing, 100191, China
| | - Yizhou Zhang
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Min Tang
- School of Light Industry and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Andrew deMello
- Department of Chemistry & Applied Biosciences, ETH Zürich, Zürich, 8093, Switzerland
| | - Yun Liang
- School of Light Industry and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Jian Hu
- School of Light Industry and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Jing Wang
- Institute of Environmental Engineering, ETH Zürich, Zürich, 8093, Switzerland
- Laboratory for Advanced Analytical Technologies, Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, 8600, Switzerland
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2
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Shang H, Xu K, Li T, Yang HR, Gao J, Li S, Zhu J, He X, Zhang S, Xu H, Shen B. Bioelectret poly(lactic acid) membranes with simultaneously enhanced physical interception and electrostatic adsorption of airborne PM 0.3. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:132010. [PMID: 37423132 DOI: 10.1016/j.jhazmat.2023.132010] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 06/18/2023] [Accepted: 07/05/2023] [Indexed: 07/11/2023]
Abstract
Traditional polymeric fibrous membranes have been extensively used to reduce the health risks caused by airborne particulate matter (PM), leading to the dramatically increasing pollution of plastics and microplastics. Although great efforts have been made to develop poly(lactic acid) (PLA)-based membrane filters, they are frequently dwarfed by their relatively poor electret properties and electrostatic adsorptive mechanisms. To resolve this dilemma, a bioelectret approach was proposed in this work, strategically involving the bioinspired adhesion of dielectric hydroxyapatite nanowhiskers as a biodegradable electret to promote the polarization properties of PLA microfibrous membranes. In addition to significant improvements in tensile properties, the incorporation of hydroxyapatite bioelectret (HABE) enabled remarkable increase in the removal efficiencies of ultrafine PM0.3 in a high-voltage electrostatic field (10 and 25 kV). This was exemplified by the largely increased filtering performance (69.75%, 23.1 Pa) for PLA membranes loaded with 10 wt% HABE at the normal airflow rate (32 L/min) compared to the pristine PLA counterpart (32.89%, 7.2 Pa). Although the filtration efficiency of PM0.3 for the counterpart dramatically decreased to 21.6% at 85 L/min, the increment was maintained at nearly 196% for the bioelectret PLA, while an ultralow pressure drop (74.5 Pa) and high humidity resistance (RH 80%) were achieved. The unusual property combination were ascribed to the HABE-enabled realization of multiple filtration mechanisms, including the simultaneous enhancement of physical interception and electrostatic adsorption. The significant filtration applications, unattainable with conventional electret membranes, demonstrate the bioelectret PLA as a promising biodegradable platform that allows high filtration properties and humidity resistance.
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Affiliation(s)
- Han Shang
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
| | - Keke Xu
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
| | - Tian Li
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
| | - Hao-Ran Yang
- State Laboratory of Surface and Interface Science and Technology, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
| | - Jiefeng Gao
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 272100, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, 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; School of Materials Science and Engineering, Southeast University, Nanjing 211189, 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; School of Materials Science and Engineering, Southeast University, Nanjing 211189, 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; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
| | - Shenghui Zhang
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
| | - Huan Xu
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China; Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China.
| | - Baolong Shen
- Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China; School of Materials Science and Engineering, Southeast University, Nanjing 211189, China.
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3
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Ke L, Yang T, Liang C, Guan X, Li T, Jiao Y, Tang D, Huang D, Li S, Zhang S, He X, Xu H. Electroactive, Antibacterial, and Biodegradable Poly(lactic acid) Nanofibrous Air Filters for Healthcare. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37378641 DOI: 10.1021/acsami.3c05834] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
Poly(lactic acid) (PLA)-based nanofibrous membranes (NFMs) hold great potential in the field of biodegradable filters for air purification but are largely limited by the relatively low electret properties and high susceptibility to bacteria. Herein, we disclosed a facile approach to the fabrication of electroactive and antibacterial PLA NFMs impregnated with a highly dielectric photocatalyst. In particular, the microwave-assisted doping (MAD) protocol was employed to yield Zn-doped titanium dioxide (Zn-TIO), featuring the well-defined anatase phase, a uniform size of ∼65 nm, and decreased band gap (3.0 eV). The incorporation of Zn-TIO (2, 6, and 10 wt %) into PLA gave rise to a significant refinement of the electrospun nanofibers, decreasing from the highest diameter of 581 nm for pure PLA to the lowest value of 264 nm. More importantly, dramatical improvements in the dielectric constants, surface potential, and electret properties were simultaneously achieved for the composite NFMs, as exemplified by a nearly 94% increase in surface potential for 3-day-aged PLA/Zn-TIO (90/10) compared with that of pure PLA. The well regulation of morphological features and promotion of electroactivity contributed to a distinct increase in the air filtration performance, as demonstrated by 98.7% filtration of PM0.3 with the highest quality factor of 0.032 Pa-1 at the airflow velocity of 32 L/min for PLA/Zn-TIO (94/6), largely surpassing pure PLA (89.4%, 0.011 Pa-1). Benefiting from the effective generation of reactive radicals and gradual release of Zn2+ by Zn-TIO, the electroactive PLA NFMs were ready to profoundly inactivate Escherichia coli and Staphylococcus epidermidis. The exceptional combination of remarkable electret properties and excellent antibacterial performance makes the PLA membrane filters promising for healthcare.
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Affiliation(s)
- Lv Ke
- School of Materials Science and Physics, 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
| | - Chenyu Liang
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Xin Guan
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Tian Li
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Yang Jiao
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Daoyuan Tang
- Anhui Sentai WPC Group Share Co., Ltd., Guangde 242299, China
| | - Donghui Huang
- Anhui Sentai WPC Group Share Co., Ltd., Guangde 242299, 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
| | - Shenghui Zhang
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, 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
| | - Huan Xu
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
- Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China
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4
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Zhou G, Xu Z, Chen G, Liu R, Wang Y. Hydrophobic/oleophobic nanofibrous filter media with bead-on-string structure for efficient personal protection of dust in mines. ENVIRONMENTAL RESEARCH 2023; 226:115699. [PMID: 36933635 DOI: 10.1016/j.envres.2023.115699] [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: 12/27/2022] [Revised: 03/07/2023] [Accepted: 03/14/2023] [Indexed: 06/18/2023]
Abstract
Pneumoconiosis in mines occupied more than 90% of the total number of occupational diseases, poses tremendous pressure and challenges on the development of personal protection materials with high dust filtration efficiency and long-lasting comfortable wearing. In this study, a kind of polyethylene terephthalate (PET) based filter media with the bead-on-string structure and hydrophobic/oleophobic property was designed and fabricated by electrospinning technology. Nanoscale silicon dioxide (SiO2NPs) and fluorinated polyurethane (PU) used in this work were benefited for the microstructure, surface energy and hydrophobic/oleophobic property, respectively. The morphology and composition of the membranes were conducted by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and fourier transform infrared spectroscopy (FTIR). Furthermore, the filtration performance, pressure drop, moisture permeability and breathing comfortable performance were measured for the study of personal protection of dust. The results showed that at the air flow of 85 L min-1, PET/SiO2/FPU double-layer nanofibrous membrane showed high filtration efficiency and low pressure drop with the filtration efficiency of 99.96%, pressure drop of 142.5 Pa and quality factor of 0.055 Pa-1, respectively. A long term of 24 h water vapor test had proved that this membrane held an outstanding moisture permeability ability of 5296.325 g (m2 24 h)-1. Compared with the commercial 3701CN filter media, the advantages of the regular breathing frequency and strong heart rate control ability indicated that this PET/SiO2/FPU double-layer membrane had the better wearing comfortable performance with broad application prospects in the personal protection of dust in mines.
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Affiliation(s)
- Gang Zhou
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China; State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Zhuo Xu
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China; State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Guanshuang Chen
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China; State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Rulin Liu
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China; State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Yongmei Wang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China; State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, 266590, China.
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5
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Yang Y, Wang H, Wang C, Chen Y, Dang B, Liu M, Zhang X, Li Y, Sun Q. Dual-Network Structured Nanofibrous Membranes with Superelevated Interception Probability for Extrafine Particles. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 36907989 DOI: 10.1021/acsami.3c01385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Airborne particulate matter (PM) pollution has caused a public health threat, including nanoscale particles, especially with emerging infectious diseases and indoor and vehicular environmental pollution. However, most existing indoor air filtration units are expensive, energy-intensive, and bulky, and there is an unavoidable trade-off between low-efficiency PM0.3/pathogen interception, PM removal, and air resistance. Herein, we designed and synthesized a two-dimensional continuous cellulose-sheath/net with a unique dual-network corrugated architecture to manufacture high-efficiency air filters and even N95 particulate face mask. Combined with its sheath/net structured pores (size 100-200 nm) consisting of a cellulose framework (1-100 nm diameter), the cellulose sheath/net filter offers high-efficiency air filtration (>99.5338%, Extrafine particles; >99.9999%, PM2.5), low-pressure drops, and a robustness quality factor of >0.14 Pa-1, utilizing their ultralight weight of 30 mg/m2 and physical adhesion and sieving behaviors. Simultaneously, masks prepared with cellulose-sheath/net filters are more likely to capture and block smaller particles than the N95 standard. The synthesis of such materials with their nanoscale features and designed macrostructures may suggest new design criteria for a novel generation of high-efficiency air filter media for different applications such as personal protection products and industrial dust removal.
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Affiliation(s)
- Yushan Yang
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, P. R. China
| | - Hanwei Wang
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, P. R. China
| | - Chao Wang
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, P. R. China
| | - Yipeng Chen
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, P. R. China
| | - Baokang Dang
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, P. R. China
| | - Ming Liu
- Guangxi Fenglin Wood Industry Group Co., Ltd., Nanning 530000, P. R. China
| | - Xiaochun Zhang
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, P. R. China
| | - Yingying Li
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, P. R. China
| | - Qingfeng Sun
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, P. R. China
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6
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Zhang X, Ma J, Wang J, Shi H, Guo J, Fan Y, Nie X, Guo T, Luo X. Modifying the Fiber Structure and Filtration Performance of Polyester Materials Based on Two Different Preparation Methods. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:3502-3511. [PMID: 36802660 DOI: 10.1021/acs.langmuir.3c00095] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
How to build a satisfactory indoor environment has become increasingly important. In this paper, the synthesis and improvement of the most widely used polyester materials in China were carried out based on two different preparation methods, and the structures and filtration performances were tested and analyzed. The results showed that a carbon black coating was wrapped on the surfaces of the new synthetic polyester filter fibers. Compared with the original materials, the filtration efficiencies of PM10, PM2.5, and PM1 were increased by 0.88-6.26, 1.68-8.78, and 0.42-4.84%, respectively. The best filtration velocity was 1.1 m/s, and the new synthetic polyester materials with direct impregnation demonstrated superior filtration performance. The filtration efficiency of the new synthetic polyester materials was improved on the particulates with sizes of 1.0-5.0 μm. The filtration performance of G4 was better than that of G3. The filtration efficiencies of PM10, PM2.5, and PM1 were improved by 4.89, 4.20, and 11.69%, respectively. The quality factor value can be used to assess the comprehensive filtration performance of air filters in practical applications. It could provide reference values for the selection of synthetic methods of new filter materials.
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Affiliation(s)
- Xin Zhang
- School of Resources Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, China
| | - Jingyao Ma
- School of Resources Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, China
| | - Jiahui Wang
- School of Resources Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, China
| | - Huixin Shi
- CSCEC Northwest Design and Research Institute Co., Ltd., Xi'an, Shaanxi 710018, China
| | - Jinping Guo
- School of Resources Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, China
| | - Yuesheng Fan
- School of Building Services Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, China
| | - Xingxin Nie
- School of Resources Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, China
| | - Tong Guo
- Zhashui Qintong Construction Co., Ltd., Shangluo, Shaanxi 726000, China
| | - Xiaoxin Luo
- Shaanxi Metallurgical Design & Research Institute Co., Ltd., Xi'an, Shaanxi 710000, China
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7
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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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8
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Nanocellulose implantation enriched the pore structure of aerogel for effective particulate matter removal. Int J Biol Macromol 2022; 219:1237-1243. [PMID: 36058392 DOI: 10.1016/j.ijbiomac.2022.08.188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 08/15/2022] [Accepted: 08/30/2022] [Indexed: 11/22/2022]
Abstract
Particulate matter (PM) pollution poses a serious threat to public health, disposable and degradable filter materials are expected to handle the problem in the future. Here, polyvinyl alcohol (PVA)/borax/cellulose nanofibrils (CNF) aerogels were implanted on a biodegradable corrugated paper to form composite air filters for the first time via freeze-drying the coated composite hydrogels. The low content of CNF and PVA could be cross-linked by borax to form hydrogels, which enhanced its maneuverability for surface implanting on the substrate. More importantly, the addition of CNF greatly enriched the pore structure of aerogels, which provided a structural basis for PM capture. The as-prepared composite air filters exhibited excellent filtration efficiencies of 92 % and 96 % toward PM1.0 and PM3.0, respectively. Moreover, the addition of dimethylol-5,5-dimethylhydantoin endowed the filters with an antibacterial property. This work shows a new possibility for the design of degradable and functional filter materials.
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9
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Su Q, Wei Z, Zhu C, Wang X, Zeng W, Wang S, Long S, Yang J. Multilevel structured PASS nanofiber filter with outstanding thermal stability and excellent mechanical property for high-efficiency particulate matter removal. JOURNAL OF HAZARDOUS MATERIALS 2022; 431:128514. [PMID: 35217345 DOI: 10.1016/j.jhazmat.2022.128514] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 02/12/2022] [Accepted: 02/17/2022] [Indexed: 05/25/2023]
Abstract
Particulate matter (PM) pollution from industrialization poses a great threat to people's health. Although fiber-based filters are used effectively to capture PM, the traditional filters with large diameter suffer from low filtration efficiency, high pressure drop and low temperature resistance. In this study, multilayer poly arylene sulfide sulfone (M-PASS) composite filter was designed and fabricated via electrospinning technology. The M-PASS composite filter is sandwich-structure. Due to the unique structure and composition, the M-PASS filter exhibited outstanding removal efficiency of 99.97 ± 0.0050%, extremely low air resistance of 44.3 ± 0.7 Pa, excellent quality factor (QF) of 0.19 ± 0.0019 Pa-1, and desirable mechanical strength of 7.0 ± 0.2 MPa. Furthermore, the as-prepared M-PASS filter can remain outstanding filtration performance at 200.0 ℃ due to the high thermal stability of PASS and the removal efficiency was still above 95.2 ± 0.4% after long-term filtration test. These results demonstrate that the structure of filter is the important one for air filtration and the M-PASS nanofiber filters have great potential in PM removal, especially under high temperature conditions.
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Affiliation(s)
- Qing Su
- Institute of Materials Science and Technology, Analytical & Testing Center, Sichuan University, Chengdu 610065, China; College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Zhimei Wei
- 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.
| | - Chuanren Zhu
- College of Polymer Science and Engineering, Sichuan University, Chengdu 610064, China
| | - Xiaojun Wang
- Institute of Materials Science and Technology, Analytical & Testing Center, Sichuan University, Chengdu 610065, China
| | - Wei Zeng
- College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Shaoyu Wang
- College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Shengru Long
- Institute of Materials Science and Technology, Analytical & Testing Center, 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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10
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Dong T, Hua Y, Zhu X, Huang X, Chi S, Liu Y, Lou CW, Lin JH. Highly Efficient and Sustainable PM Filtration Using Piezo Nanofibrous Membrane with Gradient Shrinking Porous Network. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120753] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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11
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Zhai F, Luo Y, Zhang Y, Liao S, Cheng J, Meng X, Zeng Y, Wang X, Yang J, Yin J, Li L. Viscosity Simulation of Glass Microfiber and an Unusual Air Filter with High-Efficiency Antibacterial Functionality Enabled by ZnO/Graphene-Modified Glass Microfiber. ACS OMEGA 2022; 7:14211-14221. [PMID: 35559200 PMCID: PMC9089376 DOI: 10.1021/acsomega.2c00838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 04/05/2022] [Indexed: 05/25/2023]
Abstract
The current global pandemic of new coronary pneumonia clearly reveals the importance of developing highly efficient filtration and fast germicidal performance of multifunctional air filters. In this study, a novel air filter with a controllable morphology based on the rod-like to flower-like zinc oxide/graphene-based photocatalytic composite particles loaded on glass microfiber was prepared by one-step microwave rapid synthesis. The multifunctional air filter shows the following special functions: the 10 mg·L-1 organic pollutant solution RhB was completely degraded within 2 h under a 500 W xenon lamp, and also 99% of Escherichia coli and Staphylococcus aureus were inactivated under a 60 W light-emitting diode lamp. Furthermore, after introducing the controllable morphology zinc oxide/graphene-based photocatalytic composite particles, the filtration efficiency of the multifunctional air filter was also kept at the same level (99.8%) as the one without any addition, indicating no loss of high-efficiency filtration while obtaining the rapid bactericidal function. The rapid antibacterial principle of the multifunctional air filter has also been proposed through the UV-vis spectroscopies, photoluminescence, and electron-spin resonance spectrum. The zinc oxide/graphene-based photocatalytic composite particles tightly coated on the glass microfiber surface could increase the active sites by changing the morphology of zinc oxide and, in the meantime, promote the separation of zinc oxide photo-generated electron-hole pairs to improve the rapid sterilization ability of the multifunctional air filters. In addition, an empirical formula to evaluate the relationship between the composition, viscosity, and viscosity modulus of glass microfiber was proposed by testing the viscosity of glass microfiber composed of 14 different compositions at 1300 and 1400 °C, which can be used as a criterion to evaluate the production technology of glass microfiber filters.
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Affiliation(s)
- Fuqiang Zhai
- Research
Institute for New Materials and Technology, Chongqing University of Arts and Sciences, Chongqing 402160, China
- Chongqing
Materials Research Institute Co., Ltd., Chongqing 400707, China
| | - Yongyi Luo
- School
of Materials and Energy, Southwest University, Chongqing 400715, China
| | - Yingchun Zhang
- College
of Pharmaceutical Sciences, Southwest University, Chongqing 402160, China
| | - Shichang Liao
- School
of Materials and Energy, Southwest University, Chongqing 400715, China
| | - Jiang Cheng
- Research
Institute for New Materials and Technology, Chongqing University of Arts and Sciences, Chongqing 402160, China
| | - Xiang Meng
- Research
Institute for New Materials and Technology, Chongqing University of Arts and Sciences, Chongqing 402160, China
| | - Yue Zeng
- College
of Pharmaceutical Sciences, Southwest University, Chongqing 402160, China
| | - Xinhui Wang
- College
of Pharmaceutical Sciences, Southwest University, Chongqing 402160, China
| | - Jinming Yang
- Chongqing
Zisun Technology Co., Ltd., Chongqing 401120, China
| | - Jiaqi Yin
- Beijing
Aerospace Smart Manufacturing Technology Development Co., Ltd., Beijing 100144, China
| | - Lu Li
- Research
Institute for New Materials and Technology, Chongqing University of Arts and Sciences, Chongqing 402160, China
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12
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Xu Y, Zhang X, Teng D, Zhao T, Li Y, Zeng Y. Multi-layered micro/nanofibrous nonwovens for functional face mask filter. NANO RESEARCH 2022; 15:7549-7558. [PMID: 35578617 PMCID: PMC9094123 DOI: 10.1007/s12274-022-4350-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/08/2022] [Accepted: 03/22/2022] [Indexed: 05/03/2023]
Abstract
UNLABELLED The worldwide COVID-19 pandemic has led to an attention on the usage of personal protective face masks. However, the longevity and safety of the commercial face masks are limited due to the charge dissipation of the electret meltblown nonwovens, which are dominate in the face mask filters. Herein, we design a type of multi-layer structured nonwovens using meltblowing and electrospinning technologies. The complex nonwovens involving meltblown and electrospun fibers are designed to possess multilevel fiber diameters and pore sizes. The micro/nanofibers with porous and wrinkled surface morphologies can well capture particulate matters (PMs), and the multilevel pore sizes contribute to low air resistance under high filtration efficiency. Airflow field simulation was carried out to understand the pressure distribution within the nonwovens in the filtration process. Meanwhile, by adding Ag nanoparticles (AgNPs) as additives, the nonwovens exhibit excellent antibacterial performance. The resultant nonwovens exhibit filtration efficiency of 99.1% for PM0.3 and low pressure drop of 105 Pa under the 10.67 cm/s inlet air velocity, and antibacterial rate of > 99.99% for Escherichia coli. These performances and functions make the designed complex nonwovens a promising filter core for face masks. ELECTRONIC SUPPLEMENTARY MATERIAL Supplementary material (Fig. S1. The filtration efficiencies of a brand of surgical mask changes with the storage time under the condition of 100% humidity. Fig. S2. The FE-SEM images of the fibers after blocking PMs. Fig. S3. Illustration of 3D structure models of the nonwovens. Fig. S4. Diameter distribution of AgNPs. Table S1. The structure parameters and filtration performances of the PP-M fibers with and without pores and wrinkles. Table S2. Filtration performance of PP-M/PLA-M/PLA-N nonwovens and commercial face masks. Table S3. The structural parameters for the nonwovens. Table S4. The filtration efficiencies and pressure drops of the PP, PE spunbonded nonwovens, and PP-M/PLA-M/PLA-N@AgNPs nonwovens) is available in the online version of this article at 10.1007/s12274-022-4350-2.
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Affiliation(s)
- Yuanqiang Xu
- College of Textiles, Donghua University, Shanghai, 201620 China
| | - Xiaomin Zhang
- College of Textiles, Donghua University, Shanghai, 201620 China
| | - Defang Teng
- College of Textiles, Donghua University, Shanghai, 201620 China
| | - Tienan Zhao
- College of Textiles, Donghua University, Shanghai, 201620 China
| | - Ying Li
- College of Textiles, Donghua University, Shanghai, 201620 China
| | - Yongchun Zeng
- College of Textiles, Donghua University, Shanghai, 201620 China
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13
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Zhong C, Xiong X. Preparation of a composite coating film via vapor induced phase separation for air purification and real-time bacteria photocatalytic inactivation. PROGRESS IN ORGANIC COATINGS 2021; 161:106486. [PMID: 34511697 PMCID: PMC8415738 DOI: 10.1016/j.porgcoat.2021.106486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 07/27/2021] [Accepted: 08/25/2021] [Indexed: 06/13/2023]
Abstract
Infectious diseases resulted from transmitting of bacteria or virus like COVID-19 via air-borne droplets have brought severe threat to human beings worldwide. Cutting the spreading paths to obtain clean air is one of the promising strategies to prevent people from such dangerous diseases. In this work, we have employed a strategy of spray coating in combination with vapor induced phase separation to prepare a composite coating film to fulfill that purpose. A stable mixture suspension containing micelles of block copolymer of poly(styrene-block-butadiene-block-styrene) and TiO2 nanoparticles was sprayed onto stainless steel mesh to evaporate solvent in non-solvent vapor atmospheres. A water vapor atmosphere and an ethanol vapor atmosphere were in turn employed to improve the mechanical strength of the obtained coating film. The porous microstructure, the porosity, and the superhydrophobicity of the coating film were carefully characterized and analyzed. The air pressure-drop of the coating film was determined to be lower than 100 Pa, indicating a high air permeability. Moreover, a foggy air containing E. coli was pressed through the coating film via a home-made apparatus to simulate the air purification system, where E. coli contained air-borne droplets were intercepted by the film matrix in a physical manner, and the bacteria was photocatalytically inactivated at the meantime. A filtration efficiency of 99.7% and a 99.6% efficiency of real-time photocatalytic inactivation of E. coli demonstrate the promising potential of the coating film.
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Affiliation(s)
- Chengtang Zhong
- Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, China
| | - Xiaopeng Xiong
- Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, China
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14
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Versatile nanofibrous filters against fine particulates and bioaerosols containing tuberculosis and virus: Multifunctions and scalable processing. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119171] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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15
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Wang Q, Wei Y, Li W, Luo X, Zhang X, Di J, Wang G, Yu J. Polarity-Dominated Stable N97 Respirators for Airborne Virus Capture Based on Nanofibrous Membranes. Angew Chem Int Ed Engl 2021; 60:23756-23762. [PMID: 34448329 PMCID: PMC8652953 DOI: 10.1002/anie.202108951] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Indexed: 11/07/2022]
Abstract
The longevity and reusability of N95-grade filtering facepiece respirators (N95 FFRs) are limited by consecutive donning and disinfection treatments. Herein, we developed stable N97 nanofibrous respirators based on chemically modified surface to enable remarkable filtration characteristics via polarity driven interaction. This was achieved by a thin-film coated polyacrylonitrile nanofibrous membrane (TFPNM), giving an overall long-lasting filtration performance with high quality factor at 0.42 Pa-1 (filtration efficiency: over 97 %; pressure drop: around 10 Pa), which is higher than that of the commercial N95 FFRs (0.10-0.41 Pa-1 ) tested with a flow rate of 5 L min-1 and the 0.26 μm NaCl aerosol. A coxsackie B4 virus filtration test demonstrated that TFPNM also had strong virus capture capacity of 97.67 %. As compared with N95 FFRs, the TFPNM was more resistant to a wider variety of disinfection protocols, and the overall filtration characteristics remained N97 standard.
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Affiliation(s)
- Qifei Wang
- State Key Laboratory of Inorganic Synthesis and Preparative ChemistryCollege of ChemistryJilin UniversityChangchun130012P. R. China
| | - Yingzhen Wei
- State Key Laboratory of Inorganic Synthesis and Preparative ChemistryCollege of ChemistryJilin UniversityChangchun130012P. R. China
| | - Wenbo Li
- State Key Laboratory of Inorganic Synthesis and Preparative ChemistryCollege of ChemistryJilin UniversityChangchun130012P. R. China
| | - Xizi Luo
- Department of PathogenbiologyChinese Ministry of EducationCollege of Basic MedicineJilin UniversityChangchun130021P. R. China
| | - Xinyue Zhang
- Department of PathogenbiologyChinese Ministry of EducationCollege of Basic MedicineJilin UniversityChangchun130021P. R. China
| | - Jiancheng Di
- State Key Laboratory of Inorganic Synthesis and Preparative ChemistryCollege of ChemistryJilin UniversityChangchun130012P. R. China
| | - Guoqing Wang
- Department of PathogenbiologyChinese Ministry of EducationCollege of Basic MedicineJilin UniversityChangchun130021P. R. China
| | - Jihong Yu
- State Key Laboratory of Inorganic Synthesis and Preparative ChemistryCollege of ChemistryJilin UniversityChangchun130012P. R. China
- International Center of Future ScienceJilin UniversityChangchun130012P. R. China
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16
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Wang Q, Wei Y, Li W, Luo X, Zhang X, Di J, Wang G, Yu J. Polarity‐Dominated Stable N97 Respirators for Airborne Virus Capture Based on Nanofibrous Membranes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108951] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Qifei Wang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Yingzhen Wei
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Wenbo Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Xizi Luo
- Department of Pathogenbiology Chinese Ministry of Education College of Basic Medicine Jilin University Changchun 130021 P. R. China
| | - Xinyue Zhang
- Department of Pathogenbiology Chinese Ministry of Education College of Basic Medicine Jilin University Changchun 130021 P. R. China
| | - Jiancheng Di
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Guoqing Wang
- Department of Pathogenbiology Chinese Ministry of Education College of Basic Medicine Jilin University Changchun 130021 P. R. China
| | - Jihong Yu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
- International Center of Future Science Jilin University Changchun 130012 P. R. China
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17
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Lu T, Cui J, Qu Q, Wang Y, Zhang J, Xiong R, Ma W, Huang C. Multistructured Electrospun Nanofibers for Air Filtration: A Review. ACS APPLIED MATERIALS & INTERFACES 2021; 13:23293-23313. [PMID: 33974391 DOI: 10.1021/acsami.1c06520] [Citation(s) in RCA: 126] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Air filtration materials (AFMs) have gradually become a research hotspot on account of the increasing attention paid to the global air quality problem. However, most AFMs cannot balance the contradiction between high filtration efficiency and low pressure drop. Electrospinning nanofibers have a large surface area to volume ratio, an adjustable porous structure, and a simple preparation process that make them an appropriate candidate for filtration materials. Therefore, electrospun nanofibers have attracted increased attention in air filtration applications. In this paper, first, the preparation methods of high-performance electrospun air filtration membranes (EAFMs) and the typical surface structures and filtration principles of electrospun fibers for air filtration are reviewed. Second, the research progress of EAFMs with multistructures, including nanoprotrusion, wrinkled, porous, branched, hollow, core-shell, ribbon, beaded, nets structure, and the application of these nanofibers in air filtration are summarized. Finally, challenges with the fabrication of EAFMs, limitations of their use, and trends for future developments are presented.
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Affiliation(s)
- Tao Lu
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Jiaxin Cui
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Qingli Qu
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Yulin Wang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Jian Zhang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Ranhua Xiong
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Wenjing Ma
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Chaobo Huang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
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18
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Tang Y, Qin Z, Yin S, Sun H. Transition metal oxide and chalcogenide-based nanomaterials for antibacterial activities: an overview. NANOSCALE 2021; 13:6373-6388. [PMID: 33885521 DOI: 10.1039/d1nr00664a] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A new battle line is drawn where antibiotic misuse and mismanagement have made treatment of bacterial infection a thorny issue. It is highly desirable to develop active antibacterial materials for bacterial control and destruction without drug resistance. A large amount of effort has been devoted to transition metal oxide and chalcogenide (TMO&C) nanomaterials as possible candidates owing to their unconventional physiochemical, electronic and optical properties and feasibility of functional architecture assembly. This review expounds multiple TMO&C-based strategies to combat pathogens, opening up new possibilities for the design of simple, yet highly effective systems that are crucial for antimicrobial treatment. A special emphasis is placed on the multiple mechanisms of these nanoagents, including mechanical rupture, photocatalytic/photothermal activity, Fenton-type reaction, nanozyme-assisted effect, released metal ions and the synergistic action of TMO&C in combination with other antibacterial agents. The applications of TMO&C nanomaterials mostly in air/water purification and wound healing along with their bactericidal activities and mechanisms are also described. Finally, the contemporary challenges and trends in the development of TMO&C-based antibacterial strategies are proposed.
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Affiliation(s)
- Yanan Tang
- Key Laboratory of Bionic Engineering (Ministry of Education), College of Biological and Agricultural Engineering, Jilin University, Changchun, Jilin Province 130022, PR China.
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19
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Wu J, Zhou H, Zhou J, Zhu X, Zhang B, Feng S, Zhong Z, Kong L, Xing W. Meltblown fabric vs nanofiber membrane, which is better for fabricating personal protective equipments. Chin J Chem Eng 2020; 36:1-9. [PMID: 33250602 PMCID: PMC7682934 DOI: 10.1016/j.cjche.2020.10.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 10/19/2020] [Accepted: 10/26/2020] [Indexed: 11/07/2022]
Abstract
The coronavirus disease 2019 (COVID-19) pandemic has led to a great demand on the personal protection products such as reusable masks. As a key raw material for masks, meltblown fabrics play an important role in rejection of aerosols. However, the electrostatic dominated aerosol rejection mechanism of meltblown fabrics prevents the mask from maintaining the desired protective effect after the static charge degradation. Herein, novel reusable masks with high aerosols rejection efficiency were fabricated by the introduction of spider-web bionic nanofiber membrane (nano cobweb-biomimetic membrane). The reuse stability of meltblown and nanofiber membrane mask was separately evaluated by infiltrating water, 75% alcohol solution, and exposing under ultraviolet (UV) light. After the water immersion test, the filtration efficiency of meltblown mask was decreased to about 79%, while the nanofiber membrane was maintained at 99%. The same phenomenon could be observed after the 75% alcohol treatment, a high filtration efficiency of 99% was maintained in nanofiber membrane, but obvious negative effect was observed in meltblown mask, which decreased to about 50%. In addition, after long-term expose under UV light, no filtration efficiency decrease was observed in nanofiber membrane, which provide a suitable way to disinfect the potential carried virus. This work successfully achieved the daily disinfection and reuse of masks, which effectively alleviate the shortage of masks during this special period.
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Affiliation(s)
- Junwei Wu
- State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing 210009, China.,Jiangsu Jiulang High-Tech Co., Ltd, Nanjing 210009, China
| | - Hongjia Zhou
- Jiangsu Jiulang High-Tech Co., Ltd, Nanjing 210009, China
| | - Jingyi Zhou
- Department of Material and Chemical Engineering, Soochow University, Suzhou 215006, China
| | - Xiao Zhu
- State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing 210009, China
| | - Bowen Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing 210009, China
| | - Shasha Feng
- State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing 210009, China
| | - Zhaoxiang Zhong
- State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing 210009, China
| | - Lingxue Kong
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Weihong Xing
- State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing 210009, China
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20
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Liao J, Zhang Y, Yang H. Hybrid membrane with controllable surface microroughness by micro-nano structure processing for diluted PM 2.5 capture. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 266:115249. [PMID: 32738727 DOI: 10.1016/j.envpol.2020.115249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 07/04/2020] [Accepted: 07/12/2020] [Indexed: 06/11/2023]
Abstract
Tremendous efforts have been devoted by researchers on air particulate matter pollution for the increasing harm, however, the Air Pollution Index (API) from "good" to "excellent" is something hard to achieve. Here, halloysite nanotubes/polyvinyl alcohol (HNTs/PVA) hybrid membrane with surface micro-nano structure processing using a one-step method for efficient PM2.5 capture was prepared. The filtration efficiency is 45.35% and the pressure drop is 41.57 Pa of composite membrane with a 60 wt% halloysite dosage. Specially, it resulted in a relatively safer PM index value of about 16.54, which tends to be more stringent than the restriction by Government of China (PM2.5 < 35 μg/m3). The filtration performance was mainly attributed to the controllable microroughness surface as well as the hierarchical structure constructed by one-step method, which has a functional role in obstruction and adsorption for diluted PM2.5. The methodology can employ halloysite onto various polymers, like polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), polyacrylonitrile (PAN) and also polycaprolactone (PCL) to yield hybrid membranes with the similar modification of surface and structure. Such versatile membrane filters can be purposely designed and scaled up, which endows the existing hybrid membrane with great potentials in both residential and public areas pollution control to achieve a healthier living environment.
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Affiliation(s)
- Juan Liao
- Hunan Key Lab of Mineral Materials and Application, Central South University, Changsha, 410083, China; School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China
| | - Yi Zhang
- Hunan Key Lab of Mineral Materials and Application, Central South University, Changsha, 410083, China; School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China.
| | - Huaming Yang
- Hunan Key Lab of Mineral Materials and Application, Central South University, Changsha, 410083, China; School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China.
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21
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22
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Self-Powered Electrospun Composite Nanofiber Membrane for Highly Efficient Air Filtration. NANOMATERIALS 2020; 10:nano10091706. [PMID: 32872502 PMCID: PMC7557972 DOI: 10.3390/nano10091706] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 08/21/2020] [Accepted: 08/27/2020] [Indexed: 11/24/2022]
Abstract
Highly efficient air filtration with low pressure drop is the key to air purification. In this work, a self-powered electrospun nanofiber membrane with an electrostatic adsorption effect was prepared to improve the filtration efficiency of micro/nano particles. The composite membrane was comprised of polyvinyl chloride (PVC) nanofibers and polyamide-6 (PA6) nanofibers. The triboelectric effect between the two adjacent nanofiber membranes generated electrostatic charges under the action of air vibration, by which the electrostatic adsorption with the same pressure drop was enhanced. The electrostatic voltage on the self-powered nanofiber membrane was 257.1 mV when the flow velocity was 0.1 m/s. For sodium chloride (NaCl) aerosol particles with a diameter of 0.3 μm, the removal efficiency of the self-powered composite nanofiber membrane was 98.75% and the pressure drop was 67.5 Pa, which showed a higher quality factor than the membrane without electrostatic charges. This work provides an effective way to improve the filtration performance of air filter membranes.
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23
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Cui J, Lu T, Li F, Wang Y, Lei J, Ma W, Zou Y, Huang C. Flexible and transparent composite nanofibre membrane that was fabricated via a "green" electrospinning method for efficient particulate matter 2.5 capture. J Colloid Interface Sci 2020; 582:506-514. [PMID: 32911399 DOI: 10.1016/j.jcis.2020.08.075] [Citation(s) in RCA: 84] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/18/2020] [Accepted: 08/19/2020] [Indexed: 11/27/2022]
Abstract
Air particulate pollution from ever-increasing industrialization poses an enormous threat to public health. Thus, the development of a green air filter with high efficiency and performance is of urgent necessity. In this study, we introduce a new effective air filtration membrane that can be used for outdoor protection. The air filter's composite nanofibre materials were prepared from polyvinyl alcohol (PVA)-sodium lignosulfonate (LS) via a "green" electrospinning method and thermal crosslinking. The addition of LS helped increase the PM2.5 removal efficiency compared to that of a pure PVA nanofibre membrane. The pressure drops of the electrospun PVA-LS membranes exceeded those of the pristine PVA air filter. The remarkable air filtration performance was maintained even after 10 cycles of circulation filtration. In addition, the PVA-LS composite nanofibre membrane exhibited excellent mechanical properties and transparency due to the introduction of LS. This study provides new insight into the design and development of high-performance and high-visibility green filter media, which include personal protection and building screens.
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Affiliation(s)
- Jiaxin Cui
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), College of Chemical Engineering, Nanjing Forestry University (NFU), Nanjing 210037, PR China
| | - Tao Lu
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), College of Chemical Engineering, Nanjing Forestry University (NFU), Nanjing 210037, PR China
| | - Fanghua Li
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), College of Chemical Engineering, Nanjing Forestry University (NFU), Nanjing 210037, PR China
| | - Yulin Wang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), College of Chemical Engineering, Nanjing Forestry University (NFU), Nanjing 210037, PR China
| | - Jiandu Lei
- Beijing Key Laboratory of Lignocellulosic Chemistry, and MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, PR China
| | - Wenjing Ma
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), College of Chemical Engineering, Nanjing Forestry University (NFU), Nanjing 210037, PR China.
| | - Yan Zou
- Department of Mechanics, Huazhong University of Science and Technology, Wuhan 430074, PR China.
| | - Chaobo Huang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), College of Chemical Engineering, Nanjing Forestry University (NFU), Nanjing 210037, PR China.
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