Electrically Pore‐Size‐Tunable Polypyrrole Membrane for Antifouling and Selective Separation

Tan, Xuecai; Hu, Chengzhi; Zhu, Zongqiang; Liu, Huijuan; Qu, Jiuhui

doi:10.1002/adfm.201903081

Cited by 50 publications

(36 citation statements)

References 42 publications

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“…Membrane separation technology is now widely used in pollutant treatment. [ 16–18 ] However, contamination of porous membrane surfaces is a bottleneck that prevents even wider use of this technology. [ 19–22 ] After dye‐containing wastewater is filtered, membranes are generally recycled by washing with organic solvents, but this process generates dye‐containing organic solvent waste.…”

Section: Methodsmentioning

confidence: 99%

Electrospinning Oriented Self‐Cleaning Porous Crosslinking Polymer for Efficient Dyes Removal

Chen

et al. 2020

Adv Materials Inter

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used to selectively separate molecules on the basis of their electrical properties or shapes. [8-10] The topological morphology of the interfacial polymerization substrate is very important for the construction of supramolecular crosslinking polymers. We believe that the combination of interfacial polymerization [11,12] and electrospinning technology [13] could be a good universal method for preparing composite nanofiltration membranes, the structures and properties of which can be controlled by means of surface modification, [14] adjustment of the electrospinning parameters, [15] and the addition of functional nanoparticles to the spinning solution. Membrane separation technology is now widely used in pollutant treatment. [16-18] However, contamination of porous membrane surfaces is a bottleneck that prevents even wider use of this technology. [19-22] After dye-containing wastewater is filtered, membranes are generally recycled by washing with organic solvents, but this process generates dye-containing organic solvent waste. If this new waste is not handled properly, the dissolved dyes can re-enter the environment and cause secondary pollution. Therefore, the development of innovative methods for controlling membrane surface structure and preparing self-cleaning membranes would be highly valuable. [23,24] Self-cleaning membranes responding to environmental stimuli such as magnetic fields, [25] temperature fluctuations, [26] and light [27,28] can cause changes in water flux and surface characteristics. Among the various stimulusresponsive materials, photocatalytic materials have attracted considerable attention; [29-31] and TiO 2 is of particular interest because of its high catalytic activity, good chemical stability, low cost, and low toxicity. [32,33] In the current study, we interfacially polymerized β-cyclodextrin and four crosslinking agents on polyacrylonitrile (PAN) electrospun nanofibrous substrates with different morphologies (depending on the PAN concentration and the spinning orientation), and we investigated the utility of the resulting composite membranes for dye removal from aqueous solution. If TiO 2 was incorporated in the PAN electrospun nanofibrous substrate, UV irradiation of the used composite membranes efficiently degraded the adsorbed dye, rendering the composite membranes self-cleaning and thus reusable (Scheme 1). First, electrospinning technology was used to fabricate nanofibrous PAN and PAN/TiO 2 membranes with controlled fiber diameter and morphology. Then, β-cyclodextrin and The separation of harmful substances by supramolecular crosslinking polymers is the focus of current research. As far as it is known, supramolecular crosslinking systems based on electrospun nanofibers are rarely reported. However, electrospun nanofibers should be promising candidates for interfacial crosslinking substrates because of their adjustable morphology and can be doped with different functional nanoparticles. In this study, β-cyclodextrin and acyl chloride compounds are interfacially polymerized on polya...

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Section: Methodsmentioning

confidence: 99%

Electrospinning Oriented Self‐Cleaning Porous Crosslinking Polymer for Efficient Dyes Removal

Chen

et al. 2020

Adv Materials Inter

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“…More commonly investigated are membrane filtration setups with conducting polymers. Polypyrrole and polyaniline for example were used on different membrane filter substrates exploiting polymer volume changes resulting from Red/Ox processes to electrochemically vary the cut off size [86][87][88] .…”

Section: Separation Applicationsmentioning

confidence: 99%

“…The specific properties of conducting polymers are also useful for antifouling measures in filter applications. Hereby changes in surface morphology, pore size variations as well as surface charge and wetting properties, all of which in the feature set of conducting polymers, can be exploited [88] .…”

mentioning

confidence: 99%

Investigating volume change and ion transport in conjugated polymers

Gladisch

2021

Linköping Studies in Science and Technology. Dissertations

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The e-plants team for being such a good team.The colleagues at LOE and RISE for helping with good ideas and solutions for all the small and big issues in the lab and providing a nice work environment.The lab crew for relentlessly fixing what we broke throughout our science endeavors.All the other administrative team members for keeping everything running.The numerous collaborators, internally and all over the world for fruitful collaborations. Vasilis for the great fun in our joint project. Sarbani for making the invisible visible. Najmeh for good collaboration.My friends in Norrköping and all over the world for all the activities to have a good work life balance. My friends and family in Germany.Mina for making every day a great day and all her support.

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“…Among all known CPs, one can consider PPy as promising material due to its high conductivity, easy and flexible preparation, good mechanical properties, and stability. Potential technological application of PPy include membrane separation [30], electronic and electrochromic devices [31], light-weight batteries [32], chromatographic stationary phases [33], sensors [34], and counterelectrode in electrolytic capacitors [35]. In recent years, it has been reported in several studies that PPy can protect metals and their alloys from corrosion [36][37][38].…”

Section: Conducting Polymersmentioning

confidence: 99%

Application of composite conducting polymers for improving the corrosion behavior of various substrates: A Review

Bazli

Yusuf

Farahani

et al. 2020

jcc

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Electrically Pore‐Size‐Tunable Polypyrrole Membrane for Antifouling and Selective Separation

Cited by 50 publications

References 42 publications

Electrospinning Oriented Self‐Cleaning Porous Crosslinking Polymer for Efficient Dyes Removal

Electrospinning Oriented Self‐Cleaning Porous Crosslinking Polymer for Efficient Dyes Removal

Investigating volume change and ion transport in conjugated polymers

Application of composite conducting polymers for improving the corrosion behavior of various substrates: A Review

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