LbL assembly of sulfonated cyclohexanone–formaldehyde condensation polymer and poly(ethyleneimine) towards rejection of both cationic ions and dyes

Guo, Honglian; Chen, Mengmeng; Liu, Qiang; Wang, Ziming; Cui, Suping; Zhang, Guojun

doi:10.1016/j.desal.2015.01.021

Cited by 39 publications

(16 citation statements)

References 42 publications

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“…6,7,48 The effective membrane area for ltration in the cell was 22.9 cm 2 . 6,7,48 The effective membrane area for ltration in the cell was 22.9 cm 2 .…”

Section: Nanoltration Performance Of the Membranesmentioning

confidence: 99%

Self-cleaning and antifouling nanofiltration membranes—superhydrophilic multilayered polyelectrolyte/CSH composite films towards rejection of dyes

Guo

Sun

et al. 2015

RSC Adv.

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Superhydrophilic poly(ethyleneimine)/poly(sodium-4-styrenesulfonate) (PEI/PSS)-calcium silicate hydrate (CSH) multilayered membranes (PEI/PSS) 2.0 (PEI/PSS-CSH) n on polyacrylonitrile (PAN) substrate were prepared via layer-by-layer (LbL) assembly with in situ precipitation of consecutive Ca 2+integrated multilayered polyelectrolytes and sodium silicate. The surface structure and properties of these multilayered membranes (PEI/PSS) 2.0 (PEI/PSS-CSH) n were characterized by zeta potential, infrared resonance spectra, water contact angles, scanning electron microscopy, and atomic force microscopy, and the separation performances were evaluated by rejection of dyes, such as xylenol orange (XO) and rhodamine B (RB). The long term performance, self-cleaning and antifouling behaviors were investigated by retention of aqueous solutions of both dyes and bovine serum albumin (BSA) aqueous solution. The results indicated that the in situ incorporation of controlled CSH contents into PEI/PSS multilayers greatly improved the hydrophilicity of the multilayered membranes, resulting in the formation of a superhydrophilic (PEI/PSS-CSH) 2.0 membrane with a water contact angle of 2.1 and the highest permeate fluxes of 191.5 and 183.5 L m À2 h À1 MPa À1 accompanied by the rejection of 94.0% and 91.2% for XO and RB aqueous solutions, respectively. When the number of assembled (PEI/ PSS-CSH) n multilayers was higher than 2.0 bilayers, the rejection increased but the flux markedly decreased to XO and RB dyes, showing a characteristic trade-off phenomenon. Moreover, the superhydrophilic (PEI/PSS-CSH) 2.0 membrane possessed a higher antifouling and self-cleaning behavior than the hydrophilic polyelectrolytes (PEI/PSS) 2.0 .

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“…6,7,48 The effective membrane area for ltration in the cell was 22.9 cm 2 . 6,7,48 The effective membrane area for ltration in the cell was 22.9 cm 2 .…”

Section: Nanoltration Performance Of the Membranesmentioning

confidence: 99%

Self-cleaning and antifouling nanofiltration membranes—superhydrophilic multilayered polyelectrolyte/CSH composite films towards rejection of dyes

Guo

Sun

et al. 2015

RSC Adv.

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“…The filtration performance of the flat‐sheet and hollow‐fiber porous PTFE membrane was evaluated by a cross‐flow filtration system as described in our previous works . The effective area of the flat‐sheet membrane in the cell was 28.26 cm 2 , and that of the hollow fiber in a module was 9.42 cm 2 .…”

Section: Methodsmentioning

confidence: 99%

Modification of a Poly(tetrafluoroethylene) Porous Membrane to Superhydrophilicity with Improved Durability

et al. 2019

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The commercial fluorocarbon surfactant (FCS) DuPont Zonyl 321 fluorinated cationic surfactants, was employed to modify both flat-sheet and hollow-fiber poly(tetrafluoroethylene) (PTFE) porous membranes. The variation of morphology, wettability, and hydrophilicity durability to acid and alkali as well as the filtration performance of both membranes were investigated. Such superhydrophilic membranes showed better wetting stability and higher resistance to acid and alkali solutions. Moreover, both membranes exhibited good filtration performance.

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“…Nanofiltration (NF) technology has attracted growing concern due to its advantages, such as high efficiency, energy savings and being environmentally friendly [5]. Presently, most of nanofiltration membranes are mainly prepared by organic polymers, including cellulose acetate, polyamide, sulfonated polyethersulfone, sulfonated polysulfone, polyvinyl alcohol, polyphenylene oxide, polyethylenimine, polyacrylonitrile, and so on [6][7][8]. Although these membranes show good rejection toward various molecules, the performances are still unsatisfactory for industrial application because of the poor mechanical strength and intolerance with acid and alkali [9,10].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of MoS2/polyelectrolyte composite membrane on ceramic tube with enhanced nanofiltration performance

Qin¹,

Liu²,

An³

et al. 2019

DWT

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In order to improve the separation performance of the nanofiltration (NF) membranes, numerous inorganic components have been introduced into polymer membranes. Molybdenum disulfide (MoS 2) is an emerging graphene-like nanomaterials, which has many advantages, and expected to have novel applications in the NF fields. Herein, this work the PDDA modified MoS 2 nanosheets were prepared, which showed better dispersion in aqueous solution, and the modified PDDA@MoS 2 displayed higher compatibility with the polyelectrolyte. Then, the prepared PDDA@MoS 2 nanosheets was introduced into polyelectrolyte membrane through LbL self-assembled method to get an organic/inorganic composite NF membrane with ceramic tube as substrate. The membrane was used to NF separation of dyes from aqueous solution. The results suggested that the membrane flux increased first and then decreased with increasing PDDA@MoS 2 nanosheets concentration, while the rejection remained almost constant. Specifically, under optimum condition, the prepared (PSS/ PDDA-MoS 2) 4.5 ceramic composite membrane showed 97.2% of rejection for 0.20 g/L methyl blue dye solution, along with flux of 163.2 L•m-2 •h-1 •MPa-1 , which was ~2.4 times compared with pure (PSS/ PDDA) 4.5 membrane without sacrificing rejection.

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LbL assembly of sulfonated cyclohexanone–formaldehyde condensation polymer and poly(ethyleneimine) towards rejection of both cationic ions and dyes

Cited by 39 publications

References 42 publications

Self-cleaning and antifouling nanofiltration membranes—superhydrophilic multilayered polyelectrolyte/CSH composite films towards rejection of dyes

Self-cleaning and antifouling nanofiltration membranes—superhydrophilic multilayered polyelectrolyte/CSH composite films towards rejection of dyes

Modification of a Poly(tetrafluoroethylene) Porous Membrane to Superhydrophilicity with Improved Durability

Fabrication of MoS2/polyelectrolyte composite membrane on ceramic tube with enhanced nanofiltration performance

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