Preparation of polythiophene-modified electrodes by electrodeposition of Pt and Pt+Pb. Application to formic acid electro-oxidation

Schrebler, Ricardo; Valle, M. A. del; ́mez, H. Go; Veas, C.; ́rdova, R. Co

doi:10.1016/0022-0728(94)03628-g

Cited by 63 publications

(32 citation statements)

References 36 publications

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“…The electrodeposition of various metals of practical interest, such as Pt [51,79,, Au [20,[142][143][144][145][146][147], Pd [148][149][150][151][152][153][154][155][156][157][158], Ag [159][160][161][162][163], Cu , Ni [159,[190][191][192][193], Pb [89,138,159] etc. and also of Pt-based bimetallic systems [95,102,103,111,112,126,135] has been extensively studied (Table 7.3). The majority of investigations address the various possibilities of dispersing Pt particles in PANI and PPY [51,79,[128][129][130][131][132]…”

Section: Metal Electrodeposition In Pre-synthesized Cpsmentioning

confidence: 99%

Metallic‐Based Nanocomposites of Conductive Polymers

Tsakova

2010

Nanostructured Conductive Polymers

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IntroductionSince the remarkable discovery of high electrical conductivity in polymer materials in 1977 [1], studies on conductive polymers (CP 1 ) have developed into interdisciplinary research expanding in various directions. A significant impetus to the field was given by materials scientists in their attempts to combine the unique properties of conductive polymers with those of other inorganic and organic materials. Thus, in the last two decades, research on the synthesis of CP-based composite materials has flourished and resulted in the development of a great variety of new materials with interesting specifically designed properties. The accumulation of a great number of studies on nanocomposite materials has provoked the recent appearance of several review articles [2-7] attempting to summarize, from different specific points of view, the advances made in the field. Thus, electrochemical aspects [2,7] of CP-based composites, optical and electronic properties [3], polyaniline(PANI)-based nanocomposites [4], the involvement of composites of CPs in chemical sensing [5], and the incorporation of metallocenes in CPs [6] have been extensively discussed.

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Section: Metal Electrodeposition In Pre-synthesized Cpsmentioning

confidence: 99%

Metallic‐Based Nanocomposites of Conductive Polymers

Tsakova

2010

Nanostructured Conductive Polymers

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“…CPs offer great advantages due to their high electronic conductivity and mechanical strength, as well as good adhesion to the substrate electrode. Several polymers such as polyaniline (PANI), ploypyrrole (PPy), polythiophene (PTh), poly(3,4-ethylenedioxythiophene) (PEDOT), etc., have been investigated as catalyst supports for formic acid oxidation [31][32][33][34][35][36][37]. Zhu et al [31] prepared Pt modified PANI/multi walled carbon nano tube (MWCNT) electrode by electrochemical deposition.…”

Section: Introductionmentioning

confidence: 99%

“…Generally carbon and carbon-based materials are used for supporting catalyst particles [22][23][24][25][26][27][28][29][30]. A thin film of electronically conducting polymer (CP) acts as a good dispersing material for Pt nanoparticles [31][32][33][34][35][36][37]. CPs offer great advantages due to their high electronic conductivity and mechanical strength, as well as good adhesion to the substrate electrode.…”

Section: Introductionmentioning

confidence: 99%

Electrooxidation of formic acid at platinum nanoclusters electrodeposited on PEDOT coated carbon paper electrode

2011

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Nanoclusters of Pt were electrochemically deposited on a conducting polymer, namely, poly(3,4-ethylenedioxythiophene) (PEDOT), which was also electrochemically deposited on carbon paper current collector. PEDOT facilitated uniform distribution of Pt nanoclusters, when compared with Pt electrodeposition on bare carbon paper substrate. Spectroscopy data indicated absence of any interaction between PEDOT and Pt. The electrochemically active surface area as measured from carbon monoxide adsorption followed by its oxidation was several times greater for Pt-PEDOT/C electrode in comparison with Pt/C electrode. The catalytic activity of Pt-PEDOT/C electrode for electrooxidation of formic acid was significantly greater than that of Pt/C electrode. Amperometry data suggested that the electrodes were stable for continuous oxidation of HCOOH.

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“…Conducting-polymer modified electrodes are known to possess intrinsic catalytic activity for the redox transformation of a number of organic and inorganic species [4][5][6][7][8]. Also, polymer thin films can be used as an organic matrix to host active metal particles in order to develop new hybrid materials with enhanced electrocatalytic properties [4,[9][10][11][12]. In these metal-polymer composites, the conducting organic matrix allows electrons to be shuttled between the electrode surface and the dispersed active metal sites.…”

Section: Introductionmentioning

confidence: 99%

“…Many reports can be found in the literature accounting for the use of these materials as conductimetric, potentiometric, colorimetric and fluorimetric sensors [13]. For some time our group has been working on the modification of electrodes by dispersion of metals in a polymeric matrix in order to use them for the electrooxidation of formic acid [9] and the analytical determination of aminoacids like γ−aminobutyric acid (GABA) [10]. In the latter case, copper was dispersed on a polymeric matrix of poly-o-phenylenediamine and its response to GABA was checked observing that the sensitivity actually increased.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical synthesis and characterization of poly(2,2’-dithiodianiline) thin films loaded with copper microparticles. Application to the amperometric analysis of γ-aminobutyric acid

et al. 2005

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SummaryModified electrodes with poly(2,2'-dithiodianiline),PDTDA, were prepared from the corresponding monomer by cyclic voltammetry between 0.0 V and 1.5-1.6 V on gold or stainless steel respectively. The potentiodynamic method proved to bring about good quality and adherent thin films. The wide potential window shown by this modified electrode allowed attempting the insertion of copper in the polymeric matrix using several strategies. The response of this modified electrode copper was checked in the presence of γ-aminobutyric acid (GABA). Copper loaded on PDTDA/Au electrodes showed the highest sensitivity along with a stable and reproducible response for the detection of GABA. The surface morphology and composition analysis by SEM and XPS shows that copper is deposited in the polymeric matrix as uniformly scattered microparticles. The surface of these particles is mainly composed of Cu(I) species.

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Preparation of polythiophene-modified electrodes by electrodeposition of Pt and Pt+Pb. Application to formic acid electro-oxidation

Cited by 63 publications

References 36 publications

Metallic‐Based Nanocomposites of Conductive Polymers

Metallic‐Based Nanocomposites of Conductive Polymers

Electrooxidation of formic acid at platinum nanoclusters electrodeposited on PEDOT coated carbon paper electrode

Electrochemical synthesis and characterization of poly(2,2’-dithiodianiline) thin films loaded with copper microparticles. Application to the amperometric analysis of γ-aminobutyric acid

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