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Ferreira, Carlos Arthur; Domenech, Susana Cristina; Lacaze, P.C.

doi:10.1023/a:1004149421649

Cited by 84 publications

(26 citation statements)

References 16 publications

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“…Any bands characteristic for TiO 2 in the wavenumber regions 700-660 cm -1 and 525-460 cm -1 [23, p. 278] could not be found in the recorded spectra. This was also the case in the FTIR spectrum of polypyrrole-TiO 2 composite film electrochemically synthesized on mild steel [27].…”

Section: Ftir Characterizationsupporting

confidence: 54%

Electrochemical polymerization and characterization of a poly(azulene)-TiO2 nanoparticle composite film

et al. 2008

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A poly(azulene)-TiO 2 composite film (PAz-TiO 2 ) was synthesized electrochemically by oxidation of azulene in an electrolyte medium containing TiO 2 nanoparticles. Polymerization was performed under magnetic stirring in an acetonitrile solution containing tetrabutylammonium hexafluorophosphate as the electrolyte salt. Influence of the concentration of TiO 2 in the reaction suspension on the electrochemical and optical properties and on the structure of the composite films was studied by cyclic voltammetry, ex situ Raman and FTIR reflection spectroscopy and in situ UV-vis and FTIR spectroelectrochemical techniques. Morphology of the composite films was studied by Scanning Electron Microscopy and the amount and distribution of the TiO 2 nanoparticles within the polymeric matrix by Inductively Coupled Plasma Mass Spectrometry with laser ablation. Addition of TiO 2 in the reaction suspension had a small catalytic activity for the polymerization of Az. Inclusion of TiO 2 nanoparticles in PAz did not affect the voltammetric behavior or the chemical structure of the formed polymer films. However, a different chain conformation and morphology of the film was formed when synthesized in presence of TiO 2 compared to the plain PAz film. It was also found that the film morphology was more homogeneous when the concentration of TiO 2 was C10 mM in the polymerization solution than films polymerized without any TiO 2 .

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Section: Ftir Characterizationsupporting

confidence: 54%

Electrochemical polymerization and characterization of a poly(azulene)-TiO2 nanoparticle composite film

et al. 2008

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“…The advantage of this system is that the PPy may be directly electrodeposited onto the steel surface in an aqueous solution without the presence of organic solvents. (Some recent reports on corrosion inhibition include those by Ferreira et al 11 and Reut et al, 9 detailing the corrosion behavior of mild steel by PPy and PPy-TiO 2 composites, respectively. )…”

Section: )mentioning

confidence: 99%

Surface and electrochemical study of DBSA‐doped polypyrrole films grown on stainless steel

Prissanaroon

Brack

Pigram

et al. 2002

Surface & Interface Analysis

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Electrically conducting polypyrrole films doped with dodecylbenzenesulphonic acid (PPy-DBSA) have been electrochemically polymerized on stainless steel. The surface and electrochemical properties of the films were investigated by a combination of cyclic voltammetry (CV), scanning electron microscopy (SEM) and x-ray photoelectron spectroscopy (XPS). The CV results showed an irreversible reaction of electropolymerization. All PPy-DBSA films had a nodular or cauliflower-like surface morphology. The grain size was dependent on the growth current density and the growth time. The ratio of incorporated DBSA anions to pyrrole repeat units in the films was ∼1 : 2. The doping level, calculated from the positive charge accumulated in the polymer chain (at.% ratio .N + + N 2+ //N total /, varied as a function of the growth current density and the growth time. The maximum doping level occurred at a growth current density of 0.5 mA cm −2 , consistent with an oxidation peak of the pyrrole monomer observed by CV. The interfacial layer between the polymer and substrate was also studied. A sulphur-rich layer was observed, indicating the presence of a thin layer of DBSA at the interface. In addition, iron was detected on the metal side of the film as a result of its dissolution from the stainless-steel electrode during the electropolymerization process. These results have implications for the use of polypyrrole films as environmentally friendly corrosion mitigants.

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“…The absorption band at 1557 cm -1 is related to C＝C stretching vibration. 19 The C-C and C-H ring vibrations appear at 1277 and 1215 cm -1 , 4 and C-H, N-H deformation vibrations at 1045 and 926 cm -1 , respectively.…”

Section: Electrochemical Properties By CV and Impedance Studiesmentioning

confidence: 97%

Electrochemical Synthesis of Polypyrrole in a Room Temperature Ionic Liquid and Its Properties

et al. 2009

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Polypyrrole (PPy) films were electropolymerized on Pt and indium-tin-oxide (ITO) electrodes in a room temperature ionic liquid, 1-buthyl-3-methylimidazolium hexafluorophosphate (bmimPF 6 ). The ionic liquid was used as both the growth medium and the supporting electrolyte. The cyclic voltammetry (CV) shows that the growth of polymer, prepared in ionic liquid was not similar to that prepared in traditional organic media. The polymer was further characterized via AC impedance, in situ UV-Visible spectroscopy, scanning electron microscopy (SEM), Raman and Fourier transform infrared spectroscopy (FTIR). Both Raman and FTIR spectroscopy results show the characteristic peak of PPy. SEM shows the morphology differences between the both sides of the polymer. The electrocatalytic effect of the PPy modified electrode was investigated in hydroquinone solution and the result exhibited electrocatalytic properties for hydroquinone by the PPy modified electrode.

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Untitled

Cited by 84 publications

References 16 publications

Electrochemical polymerization and characterization of a poly(azulene)-TiO2 nanoparticle composite film

Electrochemical polymerization and characterization of a poly(azulene)-TiO2 nanoparticle composite film

Surface and electrochemical study of DBSA‐doped polypyrrole films grown on stainless steel

Electrochemical Synthesis of Polypyrrole in a Room Temperature Ionic Liquid and Its Properties

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