Large-Scale Fabrication of 3D gradient hierarchical fibrous filter materials with Micro-Submicro-Nanofibers for efficient and Long-Duration air filtration

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: 362, P. 131867 - 131867

Published: Jan. 30, 2025

Language: Английский

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Tetrabutylammonium Chloride Triggered Polyvinylidene Fluoride - Thermoplastic Polyurethane Branched-Nanofiber Films for Air Filtration

Journal of Membrane Science, Journal Year: 2025, Volume and Issue: unknown, P. 123739 - 123739

Published: Jan. 1, 2025

Language: Английский

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Highly air-permeable and dust-holding protective membranes by hierarchical structuring of electroactive poly(lactic acid) micro- and nanofibers

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 480, P. 136462 - 136462

Published: Nov. 9, 2024

Language: Английский

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Large-Scale Fabrication of 3d Gradient Hierarchical Fibrous Filter Materials with Micro-Submicro-Nanofibers for Efficient and Long-Duration Air Filtration

Published: Jan. 1, 2025

Atmospheric particulate matter pollution poses significant threats to human health and the environment. Submicron-fiber filtration materials have received widespread attention owing their ultrafine dimensions, high porosity, precise interception capabilities. However, low dust-holding capacity rapid resistance increase during use remain challenges. In this study, a modular helical linear free-surface multi-jet electrospinning device was employed prepare multi-scale fibers (80–800 nm) combine them with melt-blown non-woven fabrics in single-step process, creating three-dimensional gradient hierarchical material (3D-MNFG). The 3D-MNFG exhibits layered structure pore sizes transitioning from 18–32 μm 0.5–2.4 μm, 0.3–0.4 μm. Under an initial pressure decrease of 90 ± 3 Pa, it achieves efficiency (97%) quality factor 0.038 Pa−1, even after electrostatic treatment. Furthermore, novel overcomes limitations existing submicron-fiber membranes by offering dust holding 22.02 g/m2. dynamic tests at air velocities (28 m/s), its increased gradually, reaching lifespan limit (450 Pa) 29 d, significantly outperforming materials, which saturated within 8 d. Simulations validate synergistic mechanism micro/nano-fibers. fabricated shows promising potential for industrial production commercial applications.

Language: Английский

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Nylon-6/SiO2 composite fiber membranes with 2D narrow pore but 3D fluffy structure for high-efficiency and comfortable PM0.1 filter

Journal of Membrane Science, Journal Year: 2025, Volume and Issue: 718, P. 123714 - 123714

Published: Jan. 9, 2025

Language: Английский

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Arming Nanofibers with MnO2 Nanosheets for Fast and Durable Removal of Ozone and Particulate Matter from Air

Journal of Membrane Science, Journal Year: 2025, Volume and Issue: 722, P. 123915 - 123915

Published: Feb. 27, 2025

Language: Английский

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High‐Performance Integrated Micro‐Vortex Air Filter Enabled With Honeycomb‐Like Structured Nanofibrous Networks

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 14, 2025

Abstract Particulate matter (PM) pollution has posed a serious threat to public health, especially with the outbreak of respiratory infections. However, most existing fiber filters face an inevitable trade‐off between removal efficiency and air resistance, due their thick fibers uncontrolled flat stacking structure. Herein, unique high‐performance integrated micro‐vortex filter is created using honeycomb‐like structured cellular nanofibrous networks via innovative electro‐netting‐assembly nanotechnique for filtration. Manipulation ejection, deformation, self‐assembly charged droplets from Taylor cone enables one‐step construction 3D cells 2D nano architectured consisted 1D nanowires diameter ≈45 nm on large‐scale. The resultant filter, functioned as system, achieved remarkable slip effect striking cascade filtration mode, showing >99.97% PM 0.3 removal, ≈0.12% atmosphere pressure 27 g m −2 dust holding, along robust mechanical stability. This work may provide promising avenue design development novel separation purification materials.

Language: Английский

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All Bio-Based Nanofiber Membrane with Conductive Polymer Reinforcement for High-Efficiency Antibacterial Air Filtration

Published: Jan. 1, 2025

Language: Английский

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Electrospun polyurethane nanofiber-coated air filter paper with high interfacial adhesion strength

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 133371 - 133371

Published: May 1, 2025

Language: Английский

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An Innovative Filtration Approach With Triboelectric and Bimodal PA6/PVDF Nanofibrous Air Filters via the Electro‐Blowing Method

Journal of Polymer Science, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 19, 2024

ABSTRACT Fibers with electrostatic capture properties and bimodal structures, combining fibers of different diameters, offer innovative filtration approaches low‐pressure drop high efficiency. In this study, PA6 dielectric PVDF nanofibrous mats, positioned differently in the triboelectric series, are produced via electro‐blowing technique. To identify most effective factors influencing filter performance, four groups prepared: unimodal single‐layer filters, group X (fibers same diameters but polymers for effect), Y + effects), Z only effect). The mats show 100% higher surface potential highest efficiency (99.233%) among single‐layered samples. Multi‐layered samples perform better, four‐layered PA6/PVDF showing greatest improvement due to both structure effect. After corona charging, sample Y3's increases from 99.886% 99.997%, minimal change pressure drop. one month IPA treatment, it retains a −0.26 kV 99.829% confirms effect, while its superior performance highlights advantages electret effects. Trial Registration: Not applicable, as study does not involve clinical trial.

Language: Английский

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