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Lin M, Shen J, Qian Q, Li T, Zhang C, Qi H. Fabrication of Poly(Lactic Acid)@TiO 2 Electrospun Membrane Decorated with Metal-Organic Frameworks for Efficient Air Filtration and Bacteriostasis. Polymers (Basel) 2024; 16:889. [PMID: 38611147 PMCID: PMC11013116 DOI: 10.3390/polym16070889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 03/16/2024] [Accepted: 03/22/2024] [Indexed: 04/14/2024] Open
Abstract
The development of high-performance filtration materials is essential for the effective removal of airborne particles, and metal-organic frameworks (MOFs) anchored to organic polymer matrices are considered to be one of the most promising porous adsorbents for air pollutants. Nowadays, most air filters are generally based on synthetic fiber polymers derived from petroleum residues and have limited functionality, so the use of MOFs in combination with nanofiber air filters has received a lot of attention. Here, a conjugated electrostatic spinning method is demonstrated for the one-step preparation of poly(lactic acid) (PLA) nanofibrous membranes with a bimodal diameter distribution and the anchoring of Zeolitic Imidazolate Framework-8 (ZIF-8) by the introduction of TiO2 and in situ generation to construct favorable multiscale fibers and rough structures. The prepared PLA/TZ maintained a good PM2.5 capture efficiency of 99.97%, a filtration efficiency of 96.43% for PM0.3, and a pressure drop of 96.0 Pa, with the highest quality factor being 0.08449 Pa-1. Additionally, ZIF-8 was uniformly generated on the surface of PLA and TiO2 nanofibers, obtaining a roughened structure and a larger specific surface area. An enhanced filtration retention effect and electrostatic interactions, as well as active free radicals, can be generated for the deep inactivation of bacteria. Compared with the unmodified membrane, PLA/TZ prepared antibacterial characteristics induced by photocatalysis and Zn2+ release, with excellent bactericidal effects against S. aureus and E. coli. Overall, this work may provide a promising approach for the development of efficient biomass-based filtration materials with antimicrobial properties.
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Affiliation(s)
- Minggang Lin
- Institute of Smart & Ecological Textile, Quanzhou Normal University, Quanzhou 362002, China; (M.L.); (C.Z.)
- College of Textile and Apparel, Xinjiang University, Urumqi 830046, China
| | - Jinlin Shen
- Institute of Smart & Ecological Textile, Quanzhou Normal University, Quanzhou 362002, China; (M.L.); (C.Z.)
- College of Textile and Apparel, Quanzhou Normal University, Quanzhou 362002, China
| | - Qiaonan Qian
- Institute of Smart & Ecological Textile, Quanzhou Normal University, Quanzhou 362002, China; (M.L.); (C.Z.)
- College of Textile and Apparel, Quanzhou Normal University, Quanzhou 362002, China
| | - Tan Li
- Institute of Smart & Ecological Textile, Quanzhou Normal University, Quanzhou 362002, China; (M.L.); (C.Z.)
- College of Textile and Apparel, Xinjiang University, Urumqi 830046, China
| | - Chuyang Zhang
- Institute of Smart & Ecological Textile, Quanzhou Normal University, Quanzhou 362002, China; (M.L.); (C.Z.)
- College of Textile and Apparel, Xinjiang University, Urumqi 830046, China
| | - Huan Qi
- Institute of Smart & Ecological Textile, Quanzhou Normal University, Quanzhou 362002, China; (M.L.); (C.Z.)
- College of Textile and Apparel, Quanzhou Normal University, Quanzhou 362002, China
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Kim M, Yang E, Liang Y, Kim S, Byun J, Kim H, Choi H. Rational Design of a Necklace-like ZIF-67/Poly(vinylidene fluoride) Electrospun Nanofiber Hybrid Membrane for Simultaneous Removal of PM 0.3 and SO 2. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38471079 DOI: 10.1021/acsami.4c00523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/14/2024]
Abstract
Growing concerns over poor air quality, especially in urban and industrial regions, have led to increased global demands for advanced air-purification technologies. However, the stability and airborne pollutant control abilities of the available air-purification materials under diverse environmental conditions are limited. Thus, the advanced development of filtration materials that can effectively control different types of pollutants, such as particulate matter (PM) and gaseous pollutants, simultaneously has attracted attention. The zeolitic imidazolate framework (ZIF), a type of porous metal-organic framework (MOF), is a promising material for capturing weakly acidic toxic gases such as SO2 owing to its excellent adsorption performance and high thermal and chemical stability. In this study, we successfully developed an ultrastable necklace-like multifunctional hybrid membrane via the cetyltrimethylammonium bromide-assisted in situ growth of zeolitic imidazolate framework (ZIF)-67 crystals on electrospun Co2+-doped poly(vinylidene fluoride) nanofibers (70 nm) that can be used in different moisture environments to achieve sustainable air-filtration performance. The hybrid nanocomposite membrane demonstrated excellent performance for the simultaneous control of intractable fine PM0.3 (filtration efficiency, 99.461%) and SO2 (adsorption capacity, 1476.5 mg g-1) under different humidity conditions. This study contributes to the optimal synergistic integration of the advanced metal-organic framework (MOF)-nanofiber nanocomposite membranes and can guide the rational design and conceptualization of a facile and novel membrane for various applications in the environmental science and energy fields.
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Affiliation(s)
- Minbeom Kim
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Eunmok Yang
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Yejin Liang
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Soyoung Kim
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Jaehyun Byun
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Hyeonseo Kim
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Heechul Choi
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
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Liang C, Li J, Chen Y, Ke L, Zhu J, Zheng L, Li XP, Zhang S, Li H, Zhong GJ, Xu H. Self-Charging, Breathable, and Antibacterial Poly(lactic acid) Nanofibrous Air Filters by Surface Engineering of Ultrasmall Electroactive Nanohybrids. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 38048182 DOI: 10.1021/acsami.3c13825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
Despite the great promise in the development of biodegradable and ecofriendly air filters by electrospinning of poly(lactic acid) (PLA) nanofibrous membranes (NFMs), the as-electrospun PLA nanofibers are generally characterized by poor electroactivity and smooth surface, challenging the exploitation of electrostatic adsorption and physical interception that are in need for efficient removal of pathogens and particulate matters (PMs). Herein, a combined "electrospinning-electrospray" strategy was disclosed to functionalize the PLA nanofibers by direct anchoring of highly dielectric BaTiO3@ZIF-8 nanohybrids (BTO@ZIF-8), conferring simultaneous promotion of surface roughness, electret properties (surface potential as high as 7.5 kV), and self-charging capability (∼190% increase in tribo-output voltage compared to that of pure PLA). Benefiting from the well-tailored morphology and increased electroactivity, the electrospun-electrosprayed PLA/BTO@ZIF-8 exhibited excellent PM-capturing performance (up to 96.54% for PM0.3 and 99.49% for PM2.5) while providing desirable air resistance (only 87 Pa at 32 L/min) due primarily to the slip flow of air molecules over the nanohybrid protrusions. This was accompanied by excellent antibacterial properties (99.9% inhibition against both Staphylococcus aureus and Escherichia coli), arising presumably from the synergistic effects of enhanced reactive oxygen species (ROS) generation, plentiful ion release, and surface charges. Our proposed strategy opens up pathways to afford exceptional combination of high-efficiency and low-resistance filtration, excellent antibacterial performance, and mechanical robustness without sacrificing the biodegradation profiles of PLA NFMs, holding potential implications for efficient and long-term healthcare.
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Affiliation(s)
- Chenyu Liang
- School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China
| | - Jiaqi Li
- School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China
| | - Yuyang Chen
- School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China
| | - Lv Ke
- 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
| | - Lina Zheng
- 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
| | - Xiao-Peng Li
- State Key Laboratory of NBC Protection for Civilian, Institute of Chemical Defense, Beijing 100191, China
| | - Shenghui Zhang
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Heguo Li
- State Key Laboratory of NBC Protection for Civilian, Institute of Chemical Defense, Beijing 100191, China
| | - Gan-Ji Zhong
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Chengdu 610065, 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
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Chengdu 610065, China
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Wang C, Song X, Li T, Zhu X, Yang S, Zhu J, He X, Gao J, Xu H. Biodegradable Electroactive Nanofibrous Air Filters for Long-Term Respiratory Healthcare and Self-Powered Monitoring. ACS APPLIED MATERIALS & INTERFACES 2023; 15:37580-37592. [PMID: 37490285 DOI: 10.1021/acsami.3c08490] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
The concept of triboelectric nanogenerator (TENG)-based fibrous air filters, in which the electroactive fibers are ready to enhance the electrostatic adsorption by sustainable energy harvesting, is appealing for long-term respiratory protection and in vivo real-time monitoring. This effort discloses a self-reinforcing electroactivity strategy to confer extreme alignment and refinement of the electrospun poly(lactic acid) (PLA) nanofibers, significantly facilitating formation of electroactive phases (i.e., β-phase and highly aligned chains and dipoles) and promotion of polarization and electret properties. It endowed the PLA nanofibrous membranes (NFMs) with largely increased surface potential and filtration performance, as exemplified by efficient removal of PM0.3 and PM2.5 (90.68 and 99.82%, respectively) even at the highest airflow capacity of 85 L/min. With high electroactivity and a well-controlled morphology, the PLA NFMs exhibited superior TENG properties triggered by regular respiratory vibrations, enabling 9.21-fold increase of surface potential (-1.43 kV) and nearly 68% increase of PM0.3 capturing (94.3%) compared to those of conventional PLA membranes. The remarkable TENG mechanisms were examined to elaborately monitor the personal respiration characteristics, particularly those triggered large and rapid variations of output voltages like coughing and tachypnea. Featuring desirable biocompatibility and degradability, the self-powered PLA NFMs permit promising applications in the fabrication of ecofriendly air filters toward high-performance purification and intelligent monitoring.
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Affiliation(s)
- Cunmin Wang
- School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China
| | - Xinyi Song
- School of Safety Engineering, 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
| | - Xuanjin Zhu
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
| | - Shugui Yang
- Shaanxi International Research Center for Soft Matter, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jintuo Zhu
- School of Safety Engineering, 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
| | - 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
- Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China
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Fabrication of Laminated Micro/Nano Filter and Its Application for Inhalable PM Removal. Polymers (Basel) 2023; 15:polym15061459. [PMID: 36987239 PMCID: PMC10052305 DOI: 10.3390/polym15061459] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/12/2023] [Accepted: 03/13/2023] [Indexed: 03/17/2023] Open
Abstract
Particulate matter (PM) with a diameter of 0.3 µm is inhalable and brings great threats to human health. Traditional meltblown nonwovens used for air filtration need to be treated by high voltage corona charging, which has the problem of electrostatic dissipation and thus reduces the filtration efficiency. In this work, a kind of composite air-filter with high efficiency and low resistance was fabricated by alternating lamination of ultrathin electronspun nano-layer and melt-blown layer without corona charging treatment. The effects of fiber diameter, pore size, porosity, layer number, and weight on filtration performance were investigated. Meanwhile, the surface hydrophobicity, loading capacity, and storage stability of the composite filter were studied. The results indicate that the filters (18.5 gsm) laminated by 10 layers fiber-webs present excellent filtration efficiency (97.94%), low pressure drop (53.2 Pa), high quality factor (QF 0.073 Pa−1), and high dust holding capacity (9.72 g/m2) for NaCl aerosol particles. Increasing the layers and reducing individual layer weight can significantly improve filtration efficiency and reduce pressure drop of the filter. The filtration efficiency decayed slightly from 97.94% to 96.48% after 80 days storage. The alternate arrangement of ultra-thin nano and melt-blown layers constructed a layer-by-layer interception and collaborative filtering effect in the composite filter, realizing the high filtration efficiency and low resistance without high voltage corona charging. These results provided new insights for the application of nonwoven fabrics in air filtration.
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Zhang Q, Yang H, Zhou T, Chen X, Li W, Pang H. Metal-Organic Frameworks and Their Composites for Environmental Applications. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2204141. [PMID: 36106360 PMCID: PMC9661848 DOI: 10.1002/advs.202204141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/17/2022] [Indexed: 06/04/2023]
Abstract
From the point of view of the ecological environment, contaminants such as heavy metal ions or toxic gases have caused harmful impacts on the environment and human health, and overcoming these adverse effects remains a serious and important task. Very recent, highly crystalline porous metal-organic frameworks (MOFs), with tailorable chemistry and excellent chemical stability, have shown promising properties in the field of removing various hazardous pollutants. This review concentrates on the recent progress of MOFs and MOF-based materials and their exploit in environmental applications, mainly including water treatment and gas storage and separation. Finally, challenges and trends of MOFs and MOF-based materials for future developments are discussed and explored.
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Affiliation(s)
- Qian Zhang
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhou225009China
| | - Hui Yang
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhou225009China
| | - Ting Zhou
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhou225009China
| | - Xudong Chen
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhou225009China
| | - Wenting Li
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhou225009China
| | - Huan Pang
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhou225009China
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Lee H, Lee H, Ahn S, Kim J. MIL-100(Fe)-Hybridized Nanofibers for Adsorption and Visible Light Photocatalytic Degradation of Water Pollutants: Experimental and DFT Approach. ACS OMEGA 2022; 7:21145-21155. [PMID: 35755355 PMCID: PMC9219076 DOI: 10.1021/acsomega.2c01953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 05/31/2022] [Indexed: 06/15/2023]
Abstract
As rapid industrial growth spawns severe water contamination and a far-reaching impact on environmental safety, the development of a purification system is in high demand. Herein, a visible light-induced photocatalytic adsorbent membrane was developed by growing a porous metal-organic framework (MOF), MIL-100(Fe) crystals, onto electrospun polyacrylonitrile (PAN) nanofibers, and its purification capability by adsorption and the photocatalytic effect was investigated. As water-soluble organic foulants, a cationic dye, rhodamine B (RhB), and an anionic dye, methyl orange (MO), were employed, and the adsorption/desorption characteristics were analyzed. Since MIL-100(Fe) possesses positive charges in aqueous solution, MO was more rapidly adsorbed onto the MIL-100(Fe) grown PAN membrane (MIL-100(Fe)@PAN) than RhB. Under visible light, both photocatalytic degradation and adsorption occurred concurrently, facilitating the purification process. The reusability of MIL-100(Fe)@PAN as an adsorbent was explored by cyclic adsorption-desorption experiments. Density functional theory (DFT) calculations corroborated higher binding energy of charged MO over RhB and demonstrated the possible steric hindrance of RhB to adhere in MOF pores. The emphasis of the study lies in the combined investigation of the experimental approach and DFT calculations for the fundamental understanding of adsorption/desorption phenomena occurring in the purification process. This study provides theoretical support for the interaction between MOF-hybrid complexes and contaminants when MOF-hybridized composites adsorb or photodegrade water-soluble pollutants of different charges and sizes.
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Affiliation(s)
- Halim Lee
- Department
of Textiles, Merchandising and Fashion Design, Seoul National University, Seoul 08826, Republic
of Korea
| | - Hyungwoo Lee
- Institute
of Advanced Machines and Design, Seoul National
University, Seoul 08826, Republic of Korea
- Division
of Multiscale Mechanical Design, School of Mechanical and Aerospace
Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Soyeon Ahn
- Department
of Textiles, Merchandising and Fashion Design, Seoul National University, Seoul 08826, Republic
of Korea
| | - Jooyoun Kim
- Department
of Textiles, Merchandising and Fashion Design, Seoul National University, Seoul 08826, Republic
of Korea
- Research
Institute of Human Ecology, Seoul National
University, Seoul 08826, Republic of Korea
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Zhang M, Song W, Tang Y, Xu X, Huang Y, Yu D. Polymer-Based Nanofiber-Nanoparticle Hybrids and Their Medical Applications. Polymers (Basel) 2022; 14:351. [PMID: 35054758 PMCID: PMC8780324 DOI: 10.3390/polym14020351] [Citation(s) in RCA: 56] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/11/2022] [Accepted: 01/14/2022] [Indexed: 12/13/2022] Open
Abstract
The search for higher-quality nanomaterials for medicinal applications continues. There are similarities between electrospun fibers and natural tissues. This property has enabled electrospun fibers to make significant progress in medical applications. However, electrospun fibers are limited to tissue scaffolding applications. When nanoparticles and nanofibers are combined, the composite material can perform more functions, such as photothermal, magnetic response, biosensing, antibacterial, drug delivery and biosensing. To prepare nanofiber and nanoparticle hybrids (NNHs), there are two primary ways. The electrospinning technology was used to produce NNHs in a single step. An alternate way is to use a self-assembly technique to create nanoparticles in fibers. This paper describes the creation of NNHs from routinely used biocompatible polymer composites. Single-step procedures and self-assembly methodologies are used to discuss the preparation of NNHs. It combines recent research discoveries to focus on the application of NNHs in drug release, antibacterial, and tissue engineering in the last two years.
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Affiliation(s)
- Mingxin Zhang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (M.Z.); (Y.T.); (X.X.); (Y.H.)
| | - Wenliang Song
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (M.Z.); (Y.T.); (X.X.); (Y.H.)
| | - Yunxin Tang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (M.Z.); (Y.T.); (X.X.); (Y.H.)
| | - Xizi Xu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (M.Z.); (Y.T.); (X.X.); (Y.H.)
| | - Yingning Huang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (M.Z.); (Y.T.); (X.X.); (Y.H.)
| | - Dengguang Yu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (M.Z.); (Y.T.); (X.X.); (Y.H.)
- Shanghai Engineering Technology Research Center for High-Performance Medical Device Materials, Shanghai 200093, China
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