Dispersible composites of exfoliated graphite and polyaniline with improved electrochemical behaviour for solid-state chemical sensor applications

Boeva, Zhanna A.; Milakin, Konstantin A.; Pesonen, Markus; Ozerin, А. N.; Sergeyev, Vladimir G.; Lindfors, Tom

doi:10.1039/c4ra08362h

Cited by 32 publications

(12 citation statements)

References 67 publications

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“…The polar β-phase bands of P(VDF-TrFE) appear distinctly at $ 846, $ 1285 and $ 1400 cm À 1 . The $ 1285 and $ 846 cm À 1 bands belong to the CF 2 symmetric stretching and the 1400 cm À 1 band is assigned to the CH 2 wagging vibration [33,34]. The position of the absorption bands does not exhibit noticeable change in graphene-P(VDFTrFE) film.…”

Section: Resultsmentioning

confidence: 98%

Self-powered graphene thermistor

et al. 2016

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Section: Resultsmentioning

confidence: 98%

Self-powered graphene thermistor

et al. 2016

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“…To improve the conductivity, PANI/GO was re‐doped with 1 M HCl as a dopant, and the conductivity obtained at room temperature was 0.058 S/m. Beova et al and Zhang et al reported the synthesis of PANI/GN nanocomposites via the in situ polymerization of aniline. The electrical conductivity reported by Beova et al was 37 S/m, whereas Zhang et al reported the electrical conductivity for PANI/GN (10, 50, and 100 wt%) to be 168.7, 22.8, and 143 S/m, respectively.…”

Section: Resultsmentioning

confidence: 99%

Study of the electroconductive properties of conductive polymers‐graphene/graphene oxide nanocomposites synthesized via in situ emulsion polymerization

et al. 2016

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The present study introduces a modified approach to synthesize polyaniline (PANI) and polypyrrole (PPy) doped with graphene oxide (GO) or graphene (GN) through an in situ emulsion polymerization (EP) technique. Dodecyl benzene sulfonic acid (DBSA) was used as a surfactant and doping agent as well during the polymerization reaction. The morphology and microstructure of the synthesized polymers and their nanocomposites were studied by scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, X‐ray photoelectron spectroscopy, and thermogravimetric analysis. All of these characterization techniques confirmed the superior morphology and thermal properties of the nanocomposites. The electroconductive properties of the synthesized polymers and their nanocomposite pellets containing 5 wt% of either GN or GO pressed at pressures of 2, 4, and 6 tons were investigated with a four‐probe analyzer. Nanocomposites showed very high electrical conductivity compared to individual PANI and PPy samples pressed at the same pressures. The addition of GO and GN not only improved the thermal stability but also significantly enhanced the electrical conductivity of the nanocomposites. Thus, the present work signifies the importance of the direct loading of GO and GN into conductive polymers during the EP process using DBSA as a surfactant to achieve nanocomposites with promising properties for various semiconductive applications. POLYM. COMPOS., 39:2142–2150, 2018. © 2016 Society of Plastics Engineers

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“…This challenge is solved by introduction of acidic groups in the side chains of the polymer (self-doped polyaniline; Jaymand, 2013 ) or by the addition of high-molecular anionic substances (Zhang et al, 2008 ). The reversibility of the polyaniline potential can be improved by implementation of conductive materials, i.e., carbon nanotubes (Bavastrello et al, 2004 ), graphene (Jaworska et al, 2012 ; Boeva et al, 2014 ), or noble metal nanoparticles (Shiigi et al, 2012 ; Lorestani et al, 2015 ).…”

Section: Polyaniline In the Assembly Of Potentiometric Sensorsmentioning

confidence: 99%

Solid-Contact Potentiometric Sensors and Multisensors Based on Polyaniline and Thiacalixarene Receptors for the Analysis of Some Beverages and Alcoholic Drinks

et al. 2018

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Electronic tongue is a sensor array that aims to discriminate and analyze complex media like food and beverages on the base of chemometrics approaches for data mining and pattern recognition. In this review, the concept of electronic tongue comprising of solid-contact potentiometric sensors with polyaniline and thacalix[4]arene derivatives is described. The electrochemical reactions of polyaniline as a background of solid-contact sensors and the characteristics of thiacalixarenes and pillararenes as neutral ionophores are briefly considered. The electronic tongue systems described were successfully applied for assessment of fruit juices, green tea, beer, and alcoholic drinks They were classified in accordance with the origination, brands and styles. Variation of the sensor response resulted from the reactions between Fe(III) ions added and sample components, i.e., antioxidants and complexing agents. The use of principal component analysis and discriminant analysis is shown for multisensor signal treatment and visualization. The discrimination conditions can be optimized by variation of the ionophores, Fe(III) concentration, and sample dilution. The results obtained were compared with other electronic tongue systems reported for the same subjects.

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Dispersible composites of exfoliated graphite and polyaniline with improved electrochemical behaviour for solid-state chemical sensor applications

Abstract: The PANI–graphene/graphite composites show improved pH stability and electrochemical behaviour in aqueous electrolyte solutions at pH ≤ 8.

Cited by 32 publications

References 67 publications

Self-powered graphene thermistor

Self-powered graphene thermistor

Study of the electroconductive properties of conductive polymers‐graphene/graphene oxide nanocomposites synthesized via in situ emulsion polymerization

Solid-Contact Potentiometric Sensors and Multisensors Based on Polyaniline and Thiacalixarene Receptors for the Analysis of Some Beverages and Alcoholic Drinks

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