Electrospun flexible self-standing γ-alumina fibrous membranes and their potential as high-efficiency fine particulate filtration media

2014 ◽  
Vol 2 (36) ◽  
pp. 15124-15131 ◽  
Author(s):  
Yan Wang ◽  
Wei Li ◽  
Yuguo Xia ◽  
Xiuling Jiao ◽  
Dairong Chen
Keyword(s):  
High Efficiency ◽  
Fine Particulate ◽  
Electrospinning Method ◽  
Fibrous Membranes ◽  
Particulate Filtration

Flexible self-standing γ-alumina fibrous membranes with high-efficiency filtration of sub-micron aerosols have been fabricated by the electrospinning method.

scholarly journals Formation and characterization of polytetrafluoroethylene nanofiber membranes for high-efficiency fine particulate filtration

RSC Advances ◽  
2019 ◽  
Vol 9 (24) ◽  
pp. 13631-13645 ◽  
Author(s):  
Huan Xu ◽  
Wangyong Jin ◽  
Feng Wang ◽  
Guojin Liu ◽  
Chengcai Li ◽  
...  
Keyword(s):  
High Temperature ◽  
High Efficiency ◽  
Porous Membranes ◽  
Fine Particulate ◽  
Nanofiber Membranes ◽  
Particulate Filtration

Polytetrafluoroethylene (PTFE) porous membranes are widely used for high-temperature filtration.

Silica nanofibrous membranes with robust flexibility and thermal stability for high-efficiency fine particulate filtration

RSC Advances ◽  
2012 ◽  
Vol 2 (32) ◽  
pp. 12216 ◽  
Author(s):  
Xue Mao ◽  
Yang Si ◽  
Yuecheng Chen ◽  
Liping Yang ◽  
Fan Zhao ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Efficiency ◽  
Fine Particulate ◽  
Nanofibrous Membranes ◽  
Particulate Filtration

High Efficiency Fine Particulate Filtration Using Carbon Nanotube Coatings

2004 ◽  
Vol 16 (22) ◽  
pp. 2045-2049 ◽  
Author(s):  
G. Viswanathan ◽  
D. B. Kane ◽  
P. J. Lipowicz
Keyword(s):  
Carbon Nanotube ◽  
High Efficiency ◽  
Fine Particulate ◽  
Particulate Filtration

Electrospun polyacrylonitrile/polyvinyl pyrrolidone composite nanofibrous membranes with high-efficiency PM2.5 filter

2020 ◽  
Vol 40 (6) ◽  
pp. 487-493
Author(s):  
Chen Wang ◽  
Kun Yan ◽  
Jun Wang ◽  
Siyu Chen ◽  
Jiaming Cui ◽  
...  
Keyword(s):  
Pore Structure ◽  
Composite Nanofibers ◽  
High Efficiency ◽  
Fine Particulate Matter ◽  
Polyvinyl Pyrrolidone ◽  
Indoor Dust ◽  
Mass Ratio ◽  
Filter Efficiency ◽  
Fine Particulate ◽  
Closed Pore

AbstractIn this research, we successfully fabricated a novel closed pore polyacrylonitrile (PAN)/polyvinyl pyrrolidone (PVP) composite nanofibrous membrane (PCNM) on the substrate of a commercial polypropylene window mesh. First, smooth and uniform PAN/PVP composite nanofibers (PCNs) were manufactured by blending PAN and PVP with a mass ratio of 5:5 during electrospinning. Subsequently, the prepared PCNs were hot pressed in a vacuum drying oven at a given temperature of 90°C. The morphology and filter efficiency of PCN and PCNM were investigated. It was found that hot-pressing treatment significantly affected the pore structure and orientation of PCNM, which contributed to its closed pore structure and good alignment. The filter efficiency results indicated that the hot-pressed PCNMs have excellent removal efficiency of up to 96.8% of fine particulate matter. This research demonstrates that PCNMs have potential as filters for indoor dust removal and will provide a new idea for the development of air filters.

Large-scale preparation of micro-gradient structured sub-micro fibrous membranes with narrow diameter distributions for high-efficiency air purification

2019 ◽  
Vol 6 (12) ◽  
pp. 3560-3578 ◽  
Author(s):  
Mengjuan Zhou ◽  
Mengzhen Fang ◽  
Zhenzhen Quan ◽  
Hongnan Zhang ◽  
Xiaohong Qin ◽  
...  
Keyword(s):  
Free Surface ◽  
Large Scale ◽  
High Efficiency ◽  
Air Purification ◽  
Air Filters ◽  
Large Scale Preparation ◽  
Free Surface Electrospinning ◽  
One Step ◽  
Scale Preparation ◽  
Fibrous Membranes

Micro-gradient structured PAN sub-micro fibrous membrane with high-efficiency air purification performance was fabricated via one-step free surface electrospinning with large-scale yield, firstly demonstrated as air filters.

Electrospun flexible self-standing silica/mesoporous alumina core–shell fibrous membranes as adsorbents toward Congo red

RSC Advances ◽  
2014 ◽  
Vol 4 (58) ◽  
pp. 30790-30797 ◽  
Author(s):  
Yan Wang ◽  
Wande Ding ◽  
Xiuling Jiao ◽  
Dairong Chen
Keyword(s):  
Adsorption Capacity ◽  
Congo Red ◽  
Mesoporous Alumina ◽  
Coaxial Electrospinning ◽  
Core Shell ◽  
Electrospinning Method ◽  
Fibrous Membranes

Flexible silica/mesoporous alumina core–shell fibrous membranes with good adsorption capacity toward Congo red have been fabricated by a coaxial electrospinning method.

Fibrous membranes of cellulose acetate and poly(vinyl pyrrolidone) by electrospinning method: Preparation and characterization

2010 ◽  
pp. NA-NA
Author(s):  
M. M. Castillo-Ortega ◽  
J. Romero-García ◽  
F. Rodríguez ◽  
A. Nájera-Luna ◽  
P. J. Herrera-Franco
Keyword(s):  
Cellulose Acetate ◽  
Vinyl Pyrrolidone ◽  
Electrospinning Method ◽  
Fibrous Membranes ◽  
Poly Vinyl Pyrrolidone

scholarly journals A Cleanable Self-Assembled Nano-SiO2/(PTFE/PEI)n/PPS Composite Filter Medium for High-Efficiency Fine Particulate Filtration

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7853
Author(s):  
Yan Luo ◽  
Zhongyun Shen ◽  
Zhihao Ma ◽  
Hongfeng Chen ◽  
Xiaodong Wang ◽  
...  
Keyword(s):  
Composite Material ◽  
Three Dimensional ◽  
Filter Material ◽  
Filtration Efficiency ◽  
Filter Medium ◽  
Network Structures ◽  
Fine Particulate ◽  
Dimensional Network ◽  
Composite Filter ◽  
Particulate Filtration

A silicon dioxide/polytetrafluoroethylene/polyethyleneimine/polyphenylene sulfide (SiO2/PTFE/PEI/PPS) composite filter medium with three-dimensional network structures was fabricated by using PPS nonwoven as the substrate which was widely employed as a cleanable filter medium. The PTFE/PEI bilayers were firstly coated on the surfaces of the PPS fibers through the layer-by-layer self-assembly technique ten times, followed by the deposition of SiO2 nanoparticles, yielding the SiO2/(PTFE/PEI)10/PPS composite material. The contents of the PTFE component were easily controlled by adjusting the number of self-assembled PTFE/PEI bilayers. As compared with the pure PPS nonwoven, the obtained SiO2/(PTFE/PEI)10/PPS composite material exhibits better mechanical properties and enhanced wear, oxidation and heat resistance. When employed as a filter material, the SiO2/(PTFE/PEI)10/PPS composite filter medium exhibited excellent filtration performance for fine particulate. The PM2.5 (particulate matter less than 2.5 μm) filtration efficiency reached up to 99.55%. The superior filtration efficiency possessed by the SiO2/(PTFE/PEI)10/PPS composite filter medium was due to the uniformly modified PTFE layers, which played a dual role in fine particulate filtration. On the one hand, the PTFE layers not only increase the specific surface area and pore volume of the composite filter material but also narrow the spaces between the fibers, which were conducive to forming the dust cake quickly, resulting in intercepting the fine particles more efficiently than the pure PPS filter medium. On the other hand, the PTFE layers have low surface energy, which is in favor of the detachment of dust cake during pulse-jet cleaning, showing superior reusability. Thanks to the three-dimensional network structures of the SiO2/(PTFE/PEI)10/PPS composite filter medium, the pressure drop during filtration was low.

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