Electrodeposited metals at conducting polymer electrodes

Atta, Nada F.; Galal, Ahmed M.; Khalifa, F. A.

doi:10.1016/j.apsusc.2006.09.025

Cited by 18 publications

(7 citation statements)

References 25 publications

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“…The enhancement of the anodic current through coating the nanofibers with the PPy layer produced the same trend. In the case of VPP, Figure (b) shows that the use of high concentrations of an oxidizing agent to obtain a thick PPy layer was not a suitable method for obtaining excellent electrode surface electrochemical activity . In this experiment, the best conditions for obtaining the highest anodic current were 40% (w/v) FeTos and 5 min of polymerization.…”

Section: Resultsmentioning

confidence: 79%

Modification of disposable screen‐printed carbon electrode surfaces with conductive electrospun nanofibers for biosensor applications

Ekabutr

Chailapakul²,

Supaphol³

2013

J of Applied Polymer Sci

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In this work, we describe an alternative approach to the surface modification of screen-printed carbon electrodes (SPCEs) to fabricate a polypyrrole/polyacrylonitrile multiwall carbon nanotube-modified screen-printed carbon electrode (PPy/PAN-MWCNT/ SPCE) using a two-step process. First, PAN loaded with 5 wt % of MWCNTs was electrospun onto a carbon layer. The CNTembedded PAN electrospun nanofibers (average diameter % 200 nm) were subsequently coated with a PPy layer via vapor-phase polymerization using p-toluenesulfonate as an oxidizing agent in a vacuum system. The electrochemical behavior of both the unmodified and the modified SPCEs were compared using cyclic voltammetry (CV) with common electroactive analytes in order to optimize the electrospinning and the vapor-phase parameters. By incorporating glucose oxidase(GOX) as an enzymatic model into the modified electrode without a mediator, we conducted a calibration study which showed that glucose could be detected by an amperometer over a linear range of 0.25-6 mM with a LOD of 15.51 lM and a sensitivity of 5.41 lA/mM cm 2 . With a mediator, the glucose detection can be performed at low potential over a linear range of 0.125-7 mM with a LOD of 0.98 mM and a sensitivity of 14.62 lA/mM cm 2 . Therefore, the novel modified electrode is a promising new device for biosensor applications. V C 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 3885-3893, 2013

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Section: Resultsmentioning

confidence: 79%

Modification of disposable screen‐printed carbon electrode surfaces with conductive electrospun nanofibers for biosensor applications

Ekabutr

Chailapakul²,

Supaphol³

2013

J of Applied Polymer Sci

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“…The electrochemistry of polyaniline films in aqueous solutions has been extensively studied [40][41][42][43][44][45][46][47][48][49]. The cyclic voltammetry (CV) is strongly affected by the preparation conditions as well as by the electrolyte.…”

Section: Resultsmentioning

confidence: 99%

Control of locally deposited gold nanoparticle on polyaniline films

Sheffer

Mandler

2009

Electrochimica Acta

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“…The electropolymerization of aniline at the NG/GCE was carried out in 0.1 M H 2 SO 4 solution containing 0.1 M aniline as the monomer, in which a potential of 1.0 V was applied to the NG/ GCE for 120 s. The resulting PANI/NG-modified GCE was thoroughly washed, and then transferred to 0.1 M H 2 SO 4 . A negative potential of −0.3 V was applied at the PANI for 30 min to ensure the "undoping" of SO 4 2− in the PANI/NG film, since undoping is a key step for the homogeneous distribution of PtNFs deposite over the organic polymer film [25]. The PANI/G was obtained via the same method as PANI/NG, but NG was replaced by G.…”

Section: Preparation Of Ngmentioning

confidence: 99%

Synthesis of PtNFs/PANI/NG with enhanced electrocatalytic activity towards methanol oxidation

Luo

Chen

Kong

et al. 2014

Ionics

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A novel Pt nanoflowers/polyaniline/nitrogendoped graphene (PtNFs/PANI/NG) electrocatalyst was prepared by dispersing Pt nanoflowers (PtNFs) onto a polyaniline (PANI) grafted N-doped graphene (NG) matrix through a twostep electrochemical process. Firstly, NG was prepared by a hydrothermal reaction of graphene oxide (GO) with urea, and then electrochemical polymerization of aniline at NG was carried out. Secondly, PtNFs was dispersed onto the film of PANI/NG by electrochemical reduction of H 2 PtCl 6 . The asprepared composites were characterized by SEM, XRD, and Raman spectra. Compared with PtNFs/PANI/G, PtNFs/PANI, and PtNFs/NG catalysts, the novel PtNFs/PANI/NG catalyst exhibits more advantages such as high catalytic activity, excellent poisoning tolerance, and stability characteristic towards methanol electro-oxidation, which is attributed to not only the good dispersion of PtNFs on PANI/NG but also the strong interactions between metal particles and conducting polymer matrixes. The results suggest that the PtNFs/PANI/ NG catalyst can be a promising alternative for catalyst in direct methanol fuel cells (DMFCs).

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Electrodeposited metals at conducting polymer electrodes

Cited by 18 publications

References 25 publications

Modification of disposable screen‐printed carbon electrode surfaces with conductive electrospun nanofibers for biosensor applications

Modification of disposable screen‐printed carbon electrode surfaces with conductive electrospun nanofibers for biosensor applications

Control of locally deposited gold nanoparticle on polyaniline films

Synthesis of PtNFs/PANI/NG with enhanced electrocatalytic activity towards methanol oxidation

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