High flux and rejection of hierarchical composite membranes based on carbon nanotube network and ultrathin electrospun nanofibrous layer for dye removal

Xu, Zhiwei; Li, Xian‐Hua; Teng, Kunyue; Zhou, Baoming; Ma, Meijun; Shan, Mingjing; Jiao, Kunyan; Qian, Xiaoming; Fan, Jintu

doi:10.1016/j.memsci.2017.04.029

Cited by 70 publications

(14 citation statements)

References 55 publications

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“…PAN is an important polymer widely used as membrane filtration, because of the strong intermolecular interaction of the chains; which has shown good mechanical strength and high permeation flux 58,59 . Furthermore, Xu et al 60 proved that the PAN nanofibers are responsible for flux enhancement because of its hydrophilicity.…”

Section: Resultsmentioning

confidence: 99%

Manipulating of polyacrylonitrile membrane porosity via SiO₂ and TiO₂ nanoparticles: Thermodynamic and experimental point of view

Hamta

Ashtiani

Karimi

et al. 2020

Polymers for Advanced Techs

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In this work, the membrane formation of the polyacrylonitrile (PAN) was investigated in the presence of different solvents named N‐methyl‐2‐pyrrolidone (NMP) and dimethylformamide (DMF). In this way, two ternary systems water/NMP/PAN and water/DMF/PAN were studied and compared both experimentally and thermodynamically. According to the binodal data, changing the solvent from NMP to DMF could expand the two‐phase region, which was proved by Hansen solubility parameters. The binodal data were predicted and the results showed that the Flory‐Huggins results are in good agreement with experimental data with less than 2% deviation, which is important to have a rational design of porous membrane and appropriate prediction of its morphology. Furthermore, the effects of TiO2 and SiO2 nanoparticles were investigated on dope solution viscosity, thickness, porosity and contact angle of the membranes in both solvents. The results showed that the pattern of changes in characteristics was similar using each nanoparticle. Lower concentrations of nanoparticles enhance the porosity of the membranes and above the optimum amount, adding the NPs leads to decrement the porosity of the nanocomposite membranes. Finally, the fluxes of the manufactured membranes in both cases were examined using distilled water or oil‐in‐water emulsion as feed. The initial permeate flux of oil‐in‐water emulsion was increased from 62 to 73 L m−2 hr−1 using the membrane fabricated by DMF instead of NMP and this fact showed that the PAN membranes potentially can be used for oil/water separation due to the low fouling and hence, the low flux drop during the time.

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Section: Resultsmentioning

confidence: 99%

Manipulating of polyacrylonitrile membrane porosity via SiO₂ and TiO₂ nanoparticles: Thermodynamic and experimental point of view

Hamta

Ashtiani

Karimi

et al. 2020

Polymers for Advanced Techs

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“…Flux recovery ratio (FRR) was also calculated to determine the antifouling properties of the membranes. Flux recovery ratio value was calculated by the formula [29]:…”

Section: Synthesis Of Chitosan-sodium Tri-polyphosphate (Tpp)zinc Oximentioning

confidence: 99%

Synthesis, Characterization and Flux Evaluation of Chitosan tri-polyphosphate Membrane and Chitosan/tri-polyphosphate Membrane Impregnated with Zinc Oxide Nanoparticles

Febriasari¹,

Siswanta²,

Riyanto³

et al. 2018

Asian J. Chem.

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A membrane is a thin lining material which can selectively transport the mass of a component as a result of thrust force and the chemical and physical properties between the membrane and permeated compound [1]. Membranes are often used for purification, in processes such as haemodialysis [2], biodiesel purification [3] and waste water purification [4]. Compared with other waste-water treatment methods such as adsorption and coagulation, a membrane is effective because it saves time, is continuous and conserves energy [5]. However, this method has some drawbacks, one of which is fouling [6,7]. Some studies have been conducted into ways to prevent fouling in membrane-based filtration processes, including research into bioreactor membranes in which microorganisms act to degrade contaminants, thus minimizing fouling in the filtration process and improving the efficiency of the membranes used [8]. Some

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“…Many novel applications such as desalination, energy conversion, and molecular sensing have been realized by nanoporous devices. The nanoporous membranes, for example, aiming at effective separation and purification, are deemed to break the flux‐selectivity tradeoff and solve the problems like water shortage . On one hand, nanochannels can perform extremely efficient water transport.…”

Section: Introductionmentioning

confidence: 99%

Structure and Transport Properties of Water and Hydrated Ions in Nano‐Confined Channels

Zhu

Wang

Fan

et al. 2019

Advcd Theory and Sims

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Nano-confined flow is ubiquitous in modern engineering and biomedical applications. As the peculiar phenomena of nano-confined flow were continuously reported and traditional theories failed to describe them accurately, simulation efforts have been made to gain deeper insight. The objective of this paper is to provide an overview of the recent progress on nano-confined flow, including water flow and hydrated ions transport. This report starts with the water behavior under nano-confinement, summarizing the water structures, flow properties and their dependence on wall wettability, channel size, etc. The report also presents the efforts made to modify the existing theories to describe nano-confined flows. Then, the report goes to the hydrated ions. The dehydration process of hydrated ions and ions sieving are discussed in detail, and the effects of membrane surface charge, grafting functional groups, and external field on ions transport are reviewed. In this Progress Report, the transport properties of water and hydrated ions in nano-confined channels are highlighted, which is critical to the design and application of nanofluidic devices, such as nanofiltration membranes, biosensors, and other related fields.

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High flux and rejection of hierarchical composite membranes based on carbon nanotube network and ultrathin electrospun nanofibrous layer for dye removal

Cited by 70 publications

References 55 publications

Manipulating of polyacrylonitrile membrane porosity via SiO₂ and TiO₂ nanoparticles: Thermodynamic and experimental point of view

Manipulating of polyacrylonitrile membrane porosity via SiO₂ and TiO₂ nanoparticles: Thermodynamic and experimental point of view

Synthesis, Characterization and Flux Evaluation of Chitosan tri-polyphosphate Membrane and Chitosan/tri-polyphosphate Membrane Impregnated with Zinc Oxide Nanoparticles

Structure and Transport Properties of Water and Hydrated Ions in Nano‐Confined Channels

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High flux and rejection of hierarchical composite membranes based on carbon nanotube network and ultrathin electrospun nanofibrous layer for dye removal

Cited by 70 publications

References 55 publications

Manipulating of polyacrylonitrile membrane porosity via SiO2 and TiO2 nanoparticles: Thermodynamic and experimental point of view

Manipulating of polyacrylonitrile membrane porosity via SiO2 and TiO2 nanoparticles: Thermodynamic and experimental point of view

Synthesis, Characterization and Flux Evaluation of Chitosan tri-polyphosphate Membrane and Chitosan/tri-polyphosphate Membrane Impregnated with Zinc Oxide Nanoparticles

Structure and Transport Properties of Water and Hydrated Ions in Nano‐Confined Channels

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Manipulating of polyacrylonitrile membrane porosity via SiO₂ and TiO₂ nanoparticles: Thermodynamic and experimental point of view

Manipulating of polyacrylonitrile membrane porosity via SiO₂ and TiO₂ nanoparticles: Thermodynamic and experimental point of view