Air Filter

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Bin Ding - One of the best experts on this subject based on the ideXlab platform.

  • a controlled design of ripple like polyamide 6 nanofiber nets membrane for high efficiency Air Filter
    Small, 2017
    Co-Authors: Shichao Zhang, Jianyong Yu, Bin Ding
    Abstract:

    The filtration capacity of fibrous media for Airborne particles is restricted by their thick diameter, low porosity, and limited frontal area. The ability to solve this problem would have broad technological implications for various Air filtration applications; despite many past efforts, it remains a great challenge to achieve. Herein, a facile and scalable strategy to fabricate the ripple-like polyamide-6 nanofiber/nets (PA-6 NF/N) Air Filter via combining electrospinning/netting technique with receiving substrate design is demonstrated. This proposed approach allows the scaffold filaments to orderly embed into 2D PA-6 nanonets layer with Steiner-tree structures and nanoscale diameter of ≈20 nm, resulting in the ripple-like membrane with extremely small pore size, highly porous structure, and hugely extended frontal surface, by facilely adjusting its pleat span and pleat pitch. These unique structural advantages enable the ripple-like PA-6 NF/N Filter to filtrate the ultrafine particles with high removal efficiency of 99.996%, low Air resistance of 95 Pa, and robust quality factor of >0.11 Pa−1; using its superlight weight of 0.9 g m−2 and physical sieving manner. This approach has the potentialities to give rise to a novel generation of Filter media displaying enhanced filtration capacity for various applications thanks to their nanoscale features and designed macrostructures.

  • Cleanable Air Filter Transferring Moisture and Effectively Capturing PM2.5
    Small, 2017
    Co-Authors: Xinglei Zhao, Pan Jiang, Yuyao Li, Jianyong Yu, Bin Ding
    Abstract:

    The lethal danger of particulate matter (PM) pollution on health leads to the development of challenging individual protection materials that should ideally exhibit a high PM2.5 purification efficiency, low Air resistance, an important moisture-vapor transmission rate (MVTR), and an easy-to-clean property. Herein, a cleanable Air Filter able to rapidly transfer moisture and efficiently capture PM2.5 is designed by electrospinning superhydrophilic polyacrylonitrile/silicon-dioxide fibers as the adsorption–desorption vector for moisture-vapor, and hydrophobic polyvinylidene fluoride fibers as the repellent components to avoid the formation of capillary water under high humidity. The desorption rate of water molecules increases from 10 to 18 mg min−1, while the diameters of polyacrylonitrile fibers reduce from 1.02 to 0.14 µm. Significantly, by introducing the hydroxyl on the surface of polyacrylonitrile nanofibers, rapid adsorption–desorption of the water molecules is observed. Moreover, by constructing a hydrophobic to super-hydrophilic gradient structure, the MVTR increases from 10 346 to 14 066 g m−2 d−1. Interestingly, the prepared fibrous membranes is easy to clean. More importantly, benefiting from enhanced slip effect, the resultant fibrous membranes presented a low Air resistance of 86 Pa. A field test in Shanghai shows that the Air Filter maintains stable PM2.5 purification efficiency of 99.99% at high MVTR during haze event.

  • A Controlled Design of Ripple‐Like Polyamide‐6 Nanofiber/Nets Membrane for High‐Efficiency Air Filter
    Small, 2017
    Co-Authors: Shichao Zhang, Jianyong Yu, Bin Ding
    Abstract:

    The filtration capacity of fibrous media for Airborne particles is restricted by their thick diameter, low porosity, and limited frontal area. The ability to solve this problem would have broad technological implications for various Air filtration applications; despite many past efforts, it remains a great challenge to achieve. Herein, a facile and scalable strategy to fabricate the ripple-like polyamide-6 nanofiber/nets (PA-6 NF/N) Air Filter via combining electrospinning/netting technique with receiving substrate design is demonstrated. This proposed approach allows the scaffold filaments to orderly embed into 2D PA-6 nanonets layer with Steiner-tree structures and nanoscale diameter of ≈20 nm, resulting in the ripple-like membrane with extremely small pore size, highly porous structure, and hugely extended frontal surface, by facilely adjusting its pleat span and pleat pitch. These unique structural advantages enable the ripple-like PA-6 NF/N Filter to filtrate the ultrafine particles with high removal efficiency of 99.996%, low Air resistance of 95 Pa, and robust quality factor of >0.11 Pa−1; using its superlight weight of 0.9 g m−2 and physical sieving manner. This approach has the potentialities to give rise to a novel generation of Filter media displaying enhanced filtration capacity for various applications thanks to their nanoscale features and designed macrostructures.

Shichao Zhang - One of the best experts on this subject based on the ideXlab platform.

  • a controlled design of ripple like polyamide 6 nanofiber nets membrane for high efficiency Air Filter
    Small, 2017
    Co-Authors: Shichao Zhang, Jianyong Yu, Bin Ding
    Abstract:

    The filtration capacity of fibrous media for Airborne particles is restricted by their thick diameter, low porosity, and limited frontal area. The ability to solve this problem would have broad technological implications for various Air filtration applications; despite many past efforts, it remains a great challenge to achieve. Herein, a facile and scalable strategy to fabricate the ripple-like polyamide-6 nanofiber/nets (PA-6 NF/N) Air Filter via combining electrospinning/netting technique with receiving substrate design is demonstrated. This proposed approach allows the scaffold filaments to orderly embed into 2D PA-6 nanonets layer with Steiner-tree structures and nanoscale diameter of ≈20 nm, resulting in the ripple-like membrane with extremely small pore size, highly porous structure, and hugely extended frontal surface, by facilely adjusting its pleat span and pleat pitch. These unique structural advantages enable the ripple-like PA-6 NF/N Filter to filtrate the ultrafine particles with high removal efficiency of 99.996%, low Air resistance of 95 Pa, and robust quality factor of >0.11 Pa−1; using its superlight weight of 0.9 g m−2 and physical sieving manner. This approach has the potentialities to give rise to a novel generation of Filter media displaying enhanced filtration capacity for various applications thanks to their nanoscale features and designed macrostructures.

  • A Controlled Design of Ripple‐Like Polyamide‐6 Nanofiber/Nets Membrane for High‐Efficiency Air Filter
    Small, 2017
    Co-Authors: Shichao Zhang, Jianyong Yu, Bin Ding
    Abstract:

    The filtration capacity of fibrous media for Airborne particles is restricted by their thick diameter, low porosity, and limited frontal area. The ability to solve this problem would have broad technological implications for various Air filtration applications; despite many past efforts, it remains a great challenge to achieve. Herein, a facile and scalable strategy to fabricate the ripple-like polyamide-6 nanofiber/nets (PA-6 NF/N) Air Filter via combining electrospinning/netting technique with receiving substrate design is demonstrated. This proposed approach allows the scaffold filaments to orderly embed into 2D PA-6 nanonets layer with Steiner-tree structures and nanoscale diameter of ≈20 nm, resulting in the ripple-like membrane with extremely small pore size, highly porous structure, and hugely extended frontal surface, by facilely adjusting its pleat span and pleat pitch. These unique structural advantages enable the ripple-like PA-6 NF/N Filter to filtrate the ultrafine particles with high removal efficiency of 99.996%, low Air resistance of 95 Pa, and robust quality factor of >0.11 Pa−1; using its superlight weight of 0.9 g m−2 and physical sieving manner. This approach has the potentialities to give rise to a novel generation of Filter media displaying enhanced filtration capacity for various applications thanks to their nanoscale features and designed macrostructures.

Jianyong Yu - One of the best experts on this subject based on the ideXlab platform.

  • a controlled design of ripple like polyamide 6 nanofiber nets membrane for high efficiency Air Filter
    Small, 2017
    Co-Authors: Shichao Zhang, Jianyong Yu, Bin Ding
    Abstract:

    The filtration capacity of fibrous media for Airborne particles is restricted by their thick diameter, low porosity, and limited frontal area. The ability to solve this problem would have broad technological implications for various Air filtration applications; despite many past efforts, it remains a great challenge to achieve. Herein, a facile and scalable strategy to fabricate the ripple-like polyamide-6 nanofiber/nets (PA-6 NF/N) Air Filter via combining electrospinning/netting technique with receiving substrate design is demonstrated. This proposed approach allows the scaffold filaments to orderly embed into 2D PA-6 nanonets layer with Steiner-tree structures and nanoscale diameter of ≈20 nm, resulting in the ripple-like membrane with extremely small pore size, highly porous structure, and hugely extended frontal surface, by facilely adjusting its pleat span and pleat pitch. These unique structural advantages enable the ripple-like PA-6 NF/N Filter to filtrate the ultrafine particles with high removal efficiency of 99.996%, low Air resistance of 95 Pa, and robust quality factor of >0.11 Pa−1; using its superlight weight of 0.9 g m−2 and physical sieving manner. This approach has the potentialities to give rise to a novel generation of Filter media displaying enhanced filtration capacity for various applications thanks to their nanoscale features and designed macrostructures.

  • Cleanable Air Filter Transferring Moisture and Effectively Capturing PM2.5
    Small, 2017
    Co-Authors: Xinglei Zhao, Pan Jiang, Yuyao Li, Jianyong Yu, Bin Ding
    Abstract:

    The lethal danger of particulate matter (PM) pollution on health leads to the development of challenging individual protection materials that should ideally exhibit a high PM2.5 purification efficiency, low Air resistance, an important moisture-vapor transmission rate (MVTR), and an easy-to-clean property. Herein, a cleanable Air Filter able to rapidly transfer moisture and efficiently capture PM2.5 is designed by electrospinning superhydrophilic polyacrylonitrile/silicon-dioxide fibers as the adsorption–desorption vector for moisture-vapor, and hydrophobic polyvinylidene fluoride fibers as the repellent components to avoid the formation of capillary water under high humidity. The desorption rate of water molecules increases from 10 to 18 mg min−1, while the diameters of polyacrylonitrile fibers reduce from 1.02 to 0.14 µm. Significantly, by introducing the hydroxyl on the surface of polyacrylonitrile nanofibers, rapid adsorption–desorption of the water molecules is observed. Moreover, by constructing a hydrophobic to super-hydrophilic gradient structure, the MVTR increases from 10 346 to 14 066 g m−2 d−1. Interestingly, the prepared fibrous membranes is easy to clean. More importantly, benefiting from enhanced slip effect, the resultant fibrous membranes presented a low Air resistance of 86 Pa. A field test in Shanghai shows that the Air Filter maintains stable PM2.5 purification efficiency of 99.99% at high MVTR during haze event.

  • A Controlled Design of Ripple‐Like Polyamide‐6 Nanofiber/Nets Membrane for High‐Efficiency Air Filter
    Small, 2017
    Co-Authors: Shichao Zhang, Jianyong Yu, Bin Ding
    Abstract:

    The filtration capacity of fibrous media for Airborne particles is restricted by their thick diameter, low porosity, and limited frontal area. The ability to solve this problem would have broad technological implications for various Air filtration applications; despite many past efforts, it remains a great challenge to achieve. Herein, a facile and scalable strategy to fabricate the ripple-like polyamide-6 nanofiber/nets (PA-6 NF/N) Air Filter via combining electrospinning/netting technique with receiving substrate design is demonstrated. This proposed approach allows the scaffold filaments to orderly embed into 2D PA-6 nanonets layer with Steiner-tree structures and nanoscale diameter of ≈20 nm, resulting in the ripple-like membrane with extremely small pore size, highly porous structure, and hugely extended frontal surface, by facilely adjusting its pleat span and pleat pitch. These unique structural advantages enable the ripple-like PA-6 NF/N Filter to filtrate the ultrafine particles with high removal efficiency of 99.996%, low Air resistance of 95 Pa, and robust quality factor of >0.11 Pa−1; using its superlight weight of 0.9 g m−2 and physical sieving manner. This approach has the potentialities to give rise to a novel generation of Filter media displaying enhanced filtration capacity for various applications thanks to their nanoscale features and designed macrostructures.

Yi Cui - One of the best experts on this subject based on the ideXlab platform.

  • Roll-to-Roll Transfer of Electrospun Nanofiber Film for High-Efficiency Transparent Air Filter
    Nano Letters, 2016
    Co-Authors: Jinwei Xu, Yayuan Liu, Po-chun Hsu, Rufan Zhang, Kai Liu, Chong Liu, Yi Cui
    Abstract:

    Particulate matter (PM) pollution in Air has become a serious environmental issue calling for new type of Filter technologies. Recently, we have demonstrated a highly efficient Air Filter by direct electrospinning of polymer fibers onto supporting mesh although its throughput is limited. Here, we demonstrate a high throughput method based on fast transfer of electrospun nanofiber film from roughed metal foil to a receiving mesh substrate. Compared with the direct electrospinning method, the transfer method is 10 times faster and has better filtration performance at the same transmittance, owing to the uniformity of transferred nanofiber film (>99.97% removal of PM2.5 at ∼73% of transmittance). With these advantages, large area freestanding nanofiber film and roll-to-roll production of Air Filter are demonstrated.

Yingying Zhang - One of the best experts on this subject based on the ideXlab platform.

  • Silk nanofibers as high efficient and lightweight Air Filter
    Nano Research, 2016
    Co-Authors: Chunya Wang, Muqiang Jian, Jiarong Xie, Xudong Yang, Quanshui Zheng, Yingying Zhang
    Abstract:

    Silk is a widely available, edible, biocompatible, and environmentally sustainable natural material. Particulate matter (PM) pollution has drawn considerable attention because it is a serious threat to public health. Herein, we report a human-friendly silk nanofiber Air Filter, which exhibits superior filtration efficiency for both PM2.5 and submicron particles with obviously low pressure drop and low basis weight compared to typical commercial microfiber Air Filters. Additionally, other functions such as antibacterial activity could be easily integrated into the silk nanofiber Air Filters, enabling the fabrication of multifunctional Air Filters. All the above characteristics, combined with the natural abundance and biocompatibility of silk, suggest a great potential for the use of silk nanofibers as Air Filters, especially as comfortable and personal Air purifiers.