Chemical and Electrochemical Synthesis of Polypyrrole Using Carrageenan as a Dopant: Polypyrrole/Multi-Walled Carbon Nanotube Nanocomposites

Rahaman, Mostafizur; Aldalbahi, Ali; Almoiqli, Mohammed; Alzahly, Shaykha

doi:10.3390/polym10060632

Cited by 54 publications

(30 citation statements)

References 59 publications

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“…The substantial increase in electrical conductivity and Seebeck coefficient resulted for this development. This improvement has been rendered rather by an important element in the wide surface area of the MWCNTs, which were used as bridges or networks linking PPy leading domains [ 30 ]. The second consideration is that MWCNTs serve as a basis for the self-assembly of PPy, which increases the electrical conductivity of the MWCNTs, in a more ordered crystalline alignment [ 31 ].…”

Section: Resultsmentioning

confidence: 99%

One-Dimensional Nanocomposites Based on Polypyrrole-Carbon Nanotubes and Their Thermoelectric Performance

et al. 2021

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Conducting polymers have attracted significant attention due to their easy fabrication, morphology modification, and their electrical properties. Amongst them, polypyrrole (PPy) has attractive thermoelectric (TE) properties. Engineering of this polymer in one-dimensional (1D) nanostructured form is found to enhance its TE performance. This was achieved in the present work by using multi-walled carbon nanotubes (MWCNTs) as a core template to direct the self-assembly of PPy and also to further enhance its TE performance. The growth of PPy on the sidewalls of MWCNTs was performed in an acidic medium based oxidative in situ polymerization. Various concentrations of MWCNTs within the range 1.1–14.6 wt.% were used to form the MWCNTs/PPy nanocomposites in 1D core-shell structures. The morphology and microstructure results of the produced nanocomposite samples showed that this MWCNTs were successfully coated by thick and thin layers of PPy. At low concentrations of MWCNTs, thick layers of PPy are formed. While at high concentrations thin layers are coated. The formed 1D nanocomposites have enhanced TE performance, particularly those containing higher contents of MWCNTs. The power factor and figure of merit values for the formed 1D nanocomposites recorded around 0.77 µV/mK2 and 1 × 10−3 at room temperature (RT), respectively. This enhancement was attributed to the perfect coating and good interaction between PPy and MWCNT through π–π stacking between the polymer chains and these nanotubes. These results might be useful for developing future TE materials and devices.

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Section: Resultsmentioning

confidence: 99%

One-Dimensional Nanocomposites Based on Polypyrrole-Carbon Nanotubes and Their Thermoelectric Performance

et al. 2021

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“…Meanwhile, IC‐ and KC‐doped PPy films using electrochemical polymerization reveal a higher conductivity for KC‐doped PPy film (6.74 ± 49 S/cm) than IC‐doped PPy films (6.31 ± 66 S/cm), which may be due to their porous and nonporous morphology. However, IC‐doped PPy films exhibit higher mechanical properties than KC‐doped PPy film 20 …”

Section: Synthesis Of Ppymentioning

confidence: 99%

“…Besides, PPy is electroactive in organic electrolyte and aqueous solutions 13 . Furthermore, PPy is known for its nontoxic and biocompatibility, 20,21 and it is utilized in wide‐ranging applications (eg, supercapacitors/electrodes, nanocomposites, gas sensors, biosensors, drug delivery, protective clothing, anticorrosion coatings, actuators, and adsorbents for the removal of heavy metals and dye. [ 19,22‐25] ) Figure 2 illustrates some of the general forms of PPy and their applications.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and factor affecting on the conductivity of polypyrrole: a short review

Pang

Arsad

Ahmadipour

2020

Polymers for Advanced Techs

168

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Polypyrrole (PPy) has unique features such as easy synthesis, environmental stability, and high electrical conductivity (approximately 105 S/cm and even >380 S/cm) for bulk and thin‐film materials. Thus, PPy is applied in numerous well‐established applications, such as in sensors, supercapacitors, and resonators. These applications take advantage of the unique properties achieved through the structure and properties of PPy. This article comprehensively elaborates the methods used to synthesize conductive PPy, along with the important factors affecting its conductivity. Emphasis is given to versatile and basic approaches that enable control of the microstructural features that eventually determine PPy conductivity. Despite the intensive research in this area, no previous study has presented all possible relevant information about PPy fabrication and the important factors influencing its electrical conductivity.

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“…The conducting polymer included polypyrrole, can be synthesized easily by chemical and electrochemical methods [ 17 ]. The deposition and coating of polypyrrole at the metal wire electrode surface were carried out during the pyrrole electropolymerization by cyclic voltammetry technique [18]. Using this technique, the electron transfer process during the pyrrole electropolymerization and the resulting polypyrrole membrane coating can be studied from the indicated cyclic voltammograms.…”

Section: Introductionmentioning

confidence: 99%

Electrocoating Polypyrrole on Gold-Wire Electrode as Potential Mediator Membrane Candidate for Anionic Surfactant Electrode Sensor

et al. 2020

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The development of polypyrrole as a potential mediator membrane candidate for sodium dodecyl sulfate (SDS) sensor electrode has been investigated. The polypyrrole membrane was synthesized electrochemically from the pyrrole and coated at the surface of a 1.0 mm diameter of the gold-wire electrode. Electropolymerization of pyrrole and coating of the polypyrrole produced was performed by cyclic voltammetry technique in the electrochemical cell containing supporting electrolyte of 0.01 M NaClO4 with an optimum potential range of -0.9 V–1.0 V, the scanning rate of 100 mV/s, an electric current of 2 mA, and running of potential scanning of 10 cycles. By using the similar optimal parameters of cyclic voltammetry, electropolymerization of 0.01 M pyrrole solution containing 0.001 M SDS also produces a polypyrrole membrane coated at the gold-wire electrode surface. These coated electrodes have the potential response-ability toward DS- anions in the concentration range of 10-7 M–10-5 M with a limit of detection of 10-7 M and sensitivity of electrode of 9.9 mV/decade. This finding shows that the SDS solution’s role is as supporting electrolyte and also as a source of DS- dopant during the pyrrole electropolymerization processes. Dopants are trapped in the polymer membrane during the electrochemical formation of polypyrrole and role as ionophores for DS- anion in the analyte solution. A potential response to the electrode phenomena is excellent basic scientific information for further synthesis of conducting polymer and development of conducting polymer-coated wire electrode model, especially in the construction of ion-selective electrode (ISE) for the determination of anionic surfactants with those models.

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Chemical and Electrochemical Synthesis of Polypyrrole Using Carrageenan as a Dopant: Polypyrrole/Multi-Walled Carbon Nanotube Nanocomposites

Cited by 54 publications

References 59 publications

One-Dimensional Nanocomposites Based on Polypyrrole-Carbon Nanotubes and Their Thermoelectric Performance

One-Dimensional Nanocomposites Based on Polypyrrole-Carbon Nanotubes and Their Thermoelectric Performance

Synthesis and factor affecting on the conductivity of polypyrrole: a short review

Electrocoating Polypyrrole on Gold-Wire Electrode as Potential Mediator Membrane Candidate for Anionic Surfactant Electrode Sensor

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