Exploiting the electrical conductivity of poly-acid doped polyaniline membranes with enhanced durability for organic solvent nanofiltration

Sarihan, Adem; Shahid, Salman; Shen, Junjie; Amura, Ida; Patterson, Darrell Alec; Emanuelsson, Emma Anna Carolina

doi:10.1016/j.memsci.2019.02.030

Cited by 30 publications

(20 citation statements)

References 57 publications

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“…One of the ways to increase the chemical and electrochemical stability of PANI is to dope it using large molecule polyacids, instead of small molecule anion dopants [ 1 , 13 , 14 , 15 ]. The Loo Group reported that electroactivity and electrochemical stability can be enhanced by doping PANI using a strong polyacid, poly(2-acrylamide-2-methyl-1-propane sulfonic acid (PAAMPSA)), showing that PANI can reversibly change its oxidation state in neutral and alkaline aqueous solutions [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Chemical and Electrochemical Stability of Polyaniline-Based Layer-by-Layer Films

Firda

Malik

et al. 2021

Polymers

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Polyaniline (PANI) has been widely used as an electroactive material in various applications including sensors, electrochromic devices, solar cells, electroluminescence, and electrochemical energy storage, owing to PANI’s unique redox properties. However, the chemical and electrochemical stability of PANI-based materials is not sufficiently high to maintain the performance of devices under many practical applications. Herein, we report a route to enhancing the chemical and electrochemical stability of PANI through layer-by-layer (LbL) assembly. PANI was assembled with different types of polyelectrolytes, and a comparative study between three different PANI-based layer-by-layer (LbL) films is presented here. Polyacids of different acidity and molecular structure, i.e., poly(acrylic acid) (PAA), polystyrene sulfonate (PSS), and tannic acid (TA), were used. The effect of polyacids’ acidity on film growth, conductivity, and chemical and electrochemical stability of PANI was investigated. The results showed that the film growth of the LbL system depended on the acidic strength of the polyacids. All LbL films exhibited improved chemical and electrochemical stability compared to PANI films. The doping level of PANI was strongly affected by the type of dopants, resulting in different chemical and electrochemical properties; the strongest polyacid (PSS) can provide the highest conductivity and chemical stability of conductive PANI. However, the electrochemical stability of PANI/PAA was found to be better than all the other films.

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Section: Introductionmentioning

confidence: 99%

Enhanced Chemical and Electrochemical Stability of Polyaniline-Based Layer-by-Layer Films

Firda

Malik

et al. 2021

Polymers

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“…PAMPSA yüklenmiş Polianilin sentezinde oksidatif polimerizasyon tekniği kullanılmıştır ve polimerizasyon sürecinin ayrıntıları önceki çalışmamızda verilmiştir (Sarihan et al, 2019). 1000 ppm Naproksen sodyum standart stok çözeltisi, istenilen konsantrasyonlara seyreltilerek kullanılmıştır.…”

Section: Metotunclassified

“…Polianilin, çeşitli asitlerle yüklenerek iletken özellik kazanmakta ve bu sayede daha fonksiyonel hale gelmektedir. Özellikle büyük moleküllü organik veya polimerik asitlerle yüklenen Polianilin iletken özelliğin yanı sıra yüksek kimyasal ve morfolojik kararlılık da kazanarak daha da işlevsel özellikler kazanmaktadır (Sarihan et al, 2019). 2akrilamido 2-metil 1-propan sülfonik asit (PAMPSA), yapısındaki sülfo grupları sayesinde Polianilin ile kuvvetli etkileşimler kurabilme potansiyeline sahiptir ve bu nedenle Polianilinin yüklenmesi için ideal bir polimer asittir (Sarihan, 2020).…”

Section: Introductionunclassified

PAMPSA Yüklenmiş Polianilinin Sulu Ortamdan Naproksen Giderimine Etkisi

Sarihan¹

2021

European Journal of Science and Technology

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“…Large dopants tend to be integrated into PANI and will not be leached out with time or with the application of the electrical stimulus, which grants greater electrochemical stability to PANI. 15,16 Livingston et al 17 fabricated integrally skinned asymmetric PANI membranes through the process of nonsolvent-induced phase separation (NIPS), and the as-prepared membranes were used in the filtration of organic solvents. Through novel in situ polymerization, Xu et al 18 used poly(2-acrylamido-2-methyl-1propanesulfonic acid) (PAMPSA) as a polymer acid template to prepare the interpolymer PANI−PAMPSA membrane, and an electrical potential (30 V) was applied to remove the bovine serum albumin pollutants from the membrane.…”

Section: Introductionmentioning

confidence: 99%

“…Through novel in situ polymerization, Xu et al 18 used poly(2-acrylamido-2-methyl-1propanesulfonic acid) (PAMPSA) as a polymer acid template to prepare the interpolymer PANI−PAMPSA membrane, and an electrical potential (30 V) was applied to remove the bovine serum albumin pollutants from the membrane. By an alternative approach, Patterson et al 16 used PAMPSA as a dopant to fabricate PANI membranes through the NIPS process, and after an electrical potential (20 V) was applied in the cross-flow filtration, increased trends in the molecular weight cutoff and permeance (10.4 and 55.6%, respectively) were observed. Emanuelsson et al 19 prepared PANI membranes by employing two polyacids (polystyrenesulfonic acid and PAMPSA) as PANI dopants through the NIPS method, and the obtained nanoporous membranes could be used in the organic solvent nanofiltration process.…”

Section: Introductionmentioning

confidence: 99%

One-Step Electrochemically Prepared Graphene/Polyaniline Conductive Filter Membrane for Permeation Enhancement by Fouling Mitigation

Sun

et al. 2020

Langmuir

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In the electrofiltration process, membrane conductivity plays a decisive role in improving the antifouling performance of the membrane. In this paper, combining the preparation of graphene (Gr) with the fabrication of the Gr layer on the surface of a polyaniline (PANI) membrane, a graphene/PANI (Gr/PANI) conductive membrane was prepared creatively by the one-step electrochemical method. The properties of the as-prepared Gr/PANI membrane were studied systematically. By the tests of Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray diffraction, and atomic force microscopy, it was confirmed that Gr was successfully produced and was combined with the PANI membrane well. Field scanning electron microscopy with energy-dispersive X-ray analysis further confirmed that the top surface and the upper layer pore walls of the membrane were randomly covered by Gr. The antifouling performance of the prepared membrane was evaluated by studying the permeation flux of the yeast suspension, compared with the ones with no electric field: the total permeation flux at 1 V direct current (dc) increased by 109%; besides, under 1 V dc, the average flux of the Gr/PANI membrane was approximately 1.4 times that of the PANI membrane. This approach may provide a promising strategy for the combination of Gr with conductive polymers to produce separation membranes.

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Exploiting the electrical conductivity of poly-acid doped polyaniline membranes with enhanced durability for organic solvent nanofiltration

Cited by 30 publications

References 57 publications

Enhanced Chemical and Electrochemical Stability of Polyaniline-Based Layer-by-Layer Films

Enhanced Chemical and Electrochemical Stability of Polyaniline-Based Layer-by-Layer Films

PAMPSA Yüklenmiş Polianilinin Sulu Ortamdan Naproksen Giderimine Etkisi

One-Step Electrochemically Prepared Graphene/Polyaniline Conductive Filter Membrane for Permeation Enhancement by Fouling Mitigation

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