Synthesis and applicability study of novel poly(dopamine)-modified carbon nanotubes based polymer electrolyte membranes for direct methanol fuel cell

Altaf, Faizah; Gill, Rohama; Batool, Rida; Zohaib-Ur-Rehman,; Majeed, Hammad; Abbas, Ghazanfar; Jacob, Karl I.

doi:10.1016/j.jece.2020.104118

Cited by 34 publications

(9 citation statements)

References 67 publications

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“…2) reveals wide bands in the regions around 3345 and 3336 cm -1 that were affiliated with stretching vibrations of catechol -OH and the band at around 2902 cm −1 that was assigned to stretching vibration of C-H (Vogt et al, 2004). The intense and coincident peaks between 1616 and 1584 cm −1 were associated with bending of N-H of the amine group in the neurotransmitter and stretching vibrations of C-C aromatic rings (De Giglio et al, 2011;Altaf et al, 2020). The strong peak observed at 1289 cm -1 was due to the stretching vibration of C-O (Altaf et al, 2020).…”

Section: Molecular Interactions Of Carvacrol and Pda With Znpsmentioning

confidence: 96%

“…The intense and coincident peaks between 1616 and 1584 cm −1 were associated with bending of N-H of the amine group in the neurotransmitter and stretching vibrations of C-C aromatic rings (De Giglio et al, 2011;Altaf et al, 2020). The strong peak observed at 1289 cm -1 was due to the stretching vibration of C-O (Altaf et al, 2020).…”

Section: Molecular Interactions Of Carvacrol and Pda With Znpsmentioning

confidence: 97%

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An effective polydopamine coating to improve stability and bioactivity of carvacrol‐loaded zein nanoparticles

Yılmaz

Akman

Bozkurt

et al. 2021

Int J of Food Sci Tech

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In this study, a simple and facile method was used to fabricate carvacrol-loaded zein nanoparticles (CLZNPs), and CLZNPs were coated with different concentrations (0.25, 0.5 and 1 mg mL −1 ) of polydopamine (PDA) to fabricate CLZPNPs. Dynamic light scattering (DLS), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) analyses showed that CLNPs and CLZPNPs possessed spherical shapes with smooth surfaces in the sizes of 562 and 725 nm and were highly stable possessing high encapsulation efficiency (81.3%). The antioxidant activity of CLZPNPs (ranging from 70.97% to 89.84%) was higher than that (51.42%) of CLZNPs. PDA had a significant effect to increase the antioxidant activity of the CLZNPs. The thermal stability of the particles was influenced by a temperature change from 30 °C to 70 °C. While 1 CLZPNP sample possessed the highest retention rate of carvacrol, the uncoated CLZNPs had the lowest retention value at all temperatures. The antibacterial effect of CLZNPs could be remarkably increased by their coating with PDA at different concentrations (0.25, 0.5 and 1 mg mL −1 ), reaching the level of 100% inhibition of Salmonella typhimurium, Pseudomonas aeruginosa and Staphylococcus aureus. As a result, coating the carvacrol-loaded nanoparticles (CLZNPs) with PDA enabled us to fabricate highly stable CLZPNPs possessing improved stability and bioactivity. The results of this study suggest that the fabricated nanoformulation would find an application in food packaging technology to increase the storage stability of the products and control various foodborne bacterial pathogens.

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Section: Molecular Interactions Of Carvacrol and Pda With Znpsmentioning

confidence: 96%

Section: Molecular Interactions Of Carvacrol and Pda With Znpsmentioning

confidence: 97%

An effective polydopamine coating to improve stability and bioactivity of carvacrol‐loaded zein nanoparticles

Yılmaz

Akman

Bozkurt

et al. 2021

Int J of Food Sci Tech

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“…Furthermore, the DMFC performance with 25/75 blend membrane showed a PD of 130 mW cm −2 at 353 K in 4 M methanol. Faizah Altaf et al also prepared sulfonated polysulfone (SPSU) based composite PEM filled with polydopamine (PD) anchored carbon nanotubes (PD-CNTs) by phase inversion methodology with varying the filler (PCSPSU) [110] and the detailed reaction protocol was given in Figure 7. The composite membrane, 0.5 weight% PD-CNTs, displayed a 43% rise in ionic conductivity compared to the original SPSU membrane, increasing from 0.085 S cm −1 for pristine to 0.1216 S cm −1 for the composite membrane at 80 • C. The prepared composite membrane also exhibited a remarkable 75% reduction in methanol permeability (5.68 × 10 −7 cm 2 s −1 ) compared to recast Nafion ® 117 membranes (23.00 × 10 −7 cm 2 s −1 ).…”

Section: Polysulfone and Its Composites For Dmfcsmentioning

confidence: 99%

Recent Advancements in Polysulfone Based Membranes for Fuel Cell (PEMFCs, DMFCs and AMFCs) Applications: A Critical Review

et al. 2022

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In recent years, ion electrolyte membranes (IEMs) preparation and properties have attracted fabulous attention in fuel cell usages owing to its high ionic conductivity and chemical resistance. Currently, perfluorinatedsulfonicacid (PFSA) membrane has been widely employed in the membrane industry in polymer electrolyte membrane fuel cells (PEMFCs); however, NafionTM suffers reduced proton conductivity at a higher temperature, requiring noble metal catalyst (Pt, Ru, and Pt-Ru), and catalyst poisoning by CO. Non-fluorinated polymers are a promising substitute. Polysulfone (PSU) is an aromatic polymer with excellent characteristics that have attracted membrane scientists in recent years. The present review provides an up-to-date development of PSU based electrolyte membranes and its composites for PEMFCs, alkaline membrane fuel cells (AMFCs), and direct methanol fuel cells (DMFCs) application. Various fillers encapsulated in the PEM/AEM moiety are appraised according to their preliminary characteristics and their plausible outcome on PEMFC/DMFC/AMFC. The key issues associated with enhancing the ionic conductivity and chemical stability have been elucidated as well. Furthermore, this review addresses the current tasks, and forthcoming directions are briefly summarized of PEM/AEMs for PEMFCs, DMFCs, AMFCs.

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“…CNTs have stimulated the curiosity of researchers across many disciplines to be utilized within many fields in semiconductors, sensors, energy conversion, storage systems, and water purification [5,[7][8][9] because of their unusual physical and chemical characteristics e.g., high thermal and mechanical stability, large surface area, high aspect ratio, electrical and chemical inertness [10][11][12]. On the other hand, the Van der Waals interactions of the bare CNTs causing the drawback of dispersibility within the polymer matrix can impede the processability and the ability of widespread use of pure CNTs in versatile composite applications [13,14].…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, the coatings of CNTs with PDA have been attracted by many researchers. For example, PDA coating of CNTs has been reported to improve their metal ion removal ability [11], polymer electrolyte membranes for direct methanol fuel cells [13], high permittivity and low dielectric loss [41], controlling cell behavior [42], protein separation [7], etc. It was also reported that the coating of CNTs with PDA can significantly improve their cytocompatibility [43][44][45].…”

Section: Introductionmentioning

confidence: 99%

Improved Biomedical Properties of Polydopamine-Coated Carbon Nanotubes

et al. 2021

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Carbon nanotubes (CNTs) due to their outstanding mechanical, thermal, chemical, and optical properties were utilized as a base material and were coated with polydopamine (PDA) (PDA@CNT) via the simple self-polymerization of dopamine (DA). Then, PDA@CNT coatings of up to five layers were examined for potential biomedical applications. The success of multiple coating of CNTs with PDA was confirmed via increased weight loss values with the increased number of PDA coatings of CNTs at 500 °C by thermogravimetric analysis. The surface area of bare CNTs was measured as 263.9 m2/g and decreased to 197.0 m2/g after a 5th coating with PDA. Furthermore, the antioxidant activities of CNT and PDA@CNTs were determined via total flavonoid content (TFC), total phenol content (TPC), and Fe(III)-reducing antioxidant power (FRAP) tests, revealing the increased antioxidant ability of PDA@CNTs with the increasing numbers of PDA coatings. Moreover, a higher inhibition percentage of the activity of the alpha-glucosidase enzyme with 95.1 ± 2.9% inhibition at 6 mg/mL PDA-1st@CNTs concentration was found. The CNT and PDA@CNTs exhibited blood compatibility, less than a 2.5% hemolysis ratio, and more than 85% blood clotting indexes. The minimum inhibition concentration (MIC) of PDA-5th@CNTs against E. coli and S. aureus bacteria was determined as 10 mg/mL.

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Synthesis and applicability study of novel poly(dopamine)-modified carbon nanotubes based polymer electrolyte membranes for direct methanol fuel cell

Cited by 34 publications

References 67 publications

An effective polydopamine coating to improve stability and bioactivity of carvacrol‐loaded zein nanoparticles

An effective polydopamine coating to improve stability and bioactivity of carvacrol‐loaded zein nanoparticles

Recent Advancements in Polysulfone Based Membranes for Fuel Cell (PEMFCs, DMFCs and AMFCs) Applications: A Critical Review

Improved Biomedical Properties of Polydopamine-Coated Carbon Nanotubes

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