Interfacial characterization and supercapacitive properties of polyaniline—Gum arabic nanocomposite/graphene oxide LbL modified electrodes

Oliveira, Rafaela Daiane de; Santos, Cleverson Siqueira; Ferreira, Rodolfo Thiago; Marciniuk, Gustavo; Marchesi, Luís F.; Garcia, Jarem Raul; Vidotti, Marcio; Pessôa, Christiana Andrade

doi:10.1016/j.apsusc.2017.06.267

Cited by 15 publications

(7 citation statements)

References 72 publications

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“…GO was synthesized by an electrochemical exfoliation method in an z E-mail: christiana.pessoa@pq.cnpq.br electrochemical cell using carbon graphite obtained from exhausted dry cells. 24 The ITO/(PANI-GA/GO) was growth as describe in the literature. 24 The ITO substrates were previously cleaned by immersion in a solution of NH 4 OH, H 2 O 2 and distilled water (1:1:5 in volume) and heated at 70 °C for 10 min.…”

Section: Methodsmentioning

confidence: 99%

“…24 The ITO/(PANI-GA/GO) was growth as describe in the literature. 24 The ITO substrates were previously cleaned by immersion in a solution of NH 4 OH, H 2 O 2 and distilled water (1:1:5 in volume) and heated at 70 °C for 10 min. Then, the substrates were immersed in isopropyl alcohol, heated for 3 min and finally dried at room temperature.…”

Section: Methodsmentioning

confidence: 99%

“…12 Recently our group has published the full characterization of (PANI-GA/GO) n LbL films and its supercapacitive properties. 24 The ITO/(PANI-GA/GO) n modified electrode presented improved pseudocapacitive properties. The electrode was modified by the LbL technique using PANI-GA as polycation and graphene oxide as polyanion.…”

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confidence: 95%

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Electrochemical Performance of pH Sensor Based on LbL Films of Polyaniline-Gum Arabic Nanocomposite and Graphene Oxide

Oliveira

Pscheidt

Santos

et al. 2020

J. Electrochem. Soc.

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Miniaturized pH sensors have attracted the attention mostly due to their applications for monitoring chemical and biological processes. The modification of electrodes by Layer-by-Layer (LbL) technique results in films with nanometric structure for application in devices with different sizes. In this paper, an electrode modified with LbL films of polyaniline-gum Arabic nanocomposite (PANI-GA) and graphene oxide (GO), designed (PANI-GA/GO) 3, was applied as a potentiometric pH sensor based on states of oxidation PANI. The pH measurements were performed in BR buffer solution and a linear range was observed from pH 2 to 7. The detection limit (DL) and quantification limit (QL) were of pH = 0.465 and 1.55, respectively. Analytical curves were obtained in triplicate and inter-assay precision was calculated for the system, demonstrating good results with relative standard deviation (RSD) of 3.7% for five measurements in different days. The (PANI-GA/GO) 3 LbL film showed promising results for its use in the development of potentiometric pH sensor.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Electrochemical Performance of pH Sensor Based on LbL Films of Polyaniline-Gum Arabic Nanocomposite and Graphene Oxide

Oliveira

Pscheidt

Santos

et al. 2020

J. Electrochem. Soc.

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“…The specific capacitance (Cs) of the modified supercapacitor electrodes was calculated by using Equation (3) [47].…”

Section: Eis Study Of Ppy and Ppy/ga Compositesmentioning

confidence: 99%

Preparation of Electrochemical Supercapacitor Based on Polypyrrole/Gum Arabic Composites

et al. 2022

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The current research focused on the super capacitive behavior of organic conducting polymer, i.e., polypyrrole (PPy) and its composites with gum arabic (GA) prepared via inverse emulsion polymerization. The synthesized composites material was analyzed by different analytical techniques, such as UV-visible, FTIR, TGA, XRD, and SEM. The UV-Vis and FTIR spectroscopy clearly show the successful insertion of GA into PPy matrix. The TGA analysis shows high thermal stability for composites than pure PPy. The XRD and SEM analysis show the crystalline and amorphous structures and overall morphology of the composites is more compact and mesoporous as compared to the pure PPy. The electrochemical properties of modified solid state supercapacitors established on pure polypyrrole (PPy), polypyrrole/gum arabic (PPy/GA) based composites were investigated through cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and galvanostatic charge–discharge (GCD). The specific capacitance of the PPy modified gold electrode is impressive (~168 F/g). The specific capacitance of PPy/GA 1 electrode has been increased to 368 F/g with a high energy density and power density (~73 Wh/kg), and (~599 W/kg) respectively.

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“…The Polyelectrolyte multilayer films prepared by a layer-by-layer (LbL) deposition technique have attracted much attention because of their facile preparation and potential applications to thin film devices [ 1 , 2 , 3 , 4 , 5 ]. A variety of polyelectrolytes can be used as materials for the preparation of LbL-deposited films, which include synthetic polymers [ 6 , 7 ], biopolymers [ 8 , 9 ], and carbon and metal nanomaterials [ 10 , 11 ]. Consequently, LbL films are currently widely used for the development of surface coatings [ 12 ], drug delivery systems [ 13 ], biosensors [ 14 ] and so forth.…”

Section: Introductionmentioning

confidence: 99%

Voltammetric Response of Alizarin Red S-Confined Film-Coated Electrodes to Diol and Polyol Compounds: Use of Phenylboronic Acid-Modified Poly(ethyleneimine) as Film Component

Takahashi

Suzuki

Ojima

et al. 2018

Sensors

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Alizarin red S (ARS) was confined in layer-by-layer (LbL) films composed of phenylboronic acid-modified poly(ethyleneimine) (PBA-PEI) and carboxymethylcellulose (CMC) to study the voltammetric response to diol and polyol compounds. The LbL film-coated gold (Au) electrode and quartz slide were immersed in an ARS solution to uptake ARS into the film. UV-visible absorption spectra of ARS-confined LbL film suggested that ARS formed boronate ester (ARS-PBS) in the film. The cyclic voltammetry of the ARS-confined LbL film-coated electrodes exhibited oxidation peaks at −0.50 and −0.62 V, which were ascribed to the oxidation reactions of ARS-PBS and free ARS, respectively, in the LbL film. The peak current at −0.62 V increased upon the addition of diol or polyol compounds such as L-dopa, glucose, and sorbitol into the solution, depending on the concentration, whereas the peak current at −0.50 V decreased. The results suggest a possible use of ARS-confined PBA-PEI/CMC LbL film-coated Au electrodes for the construction of voltammetric sensors for diol and polyol compounds.

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Interfacial characterization and supercapacitive properties of polyaniline—Gum arabic nanocomposite/graphene oxide LbL modified electrodes

Cited by 15 publications

References 72 publications

Electrochemical Performance of pH Sensor Based on LbL Films of Polyaniline-Gum Arabic Nanocomposite and Graphene Oxide

Electrochemical Performance of pH Sensor Based on LbL Films of Polyaniline-Gum Arabic Nanocomposite and Graphene Oxide

Preparation of Electrochemical Supercapacitor Based on Polypyrrole/Gum Arabic Composites

Voltammetric Response of Alizarin Red S-Confined Film-Coated Electrodes to Diol and Polyol Compounds: Use of Phenylboronic Acid-Modified Poly(ethyleneimine) as Film Component

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