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Chemically modified carbon paste and carbon composite electrodes
Electroanalysis, 1989AbstractCarbon paste electrodes and composite carbon electrodes modified by 20% silica gel (30 μm) within the electrode material exhibit many properties typical of a strand of carbon fiber microelectrodes in voltammetric measurements. Charged and uncharged species were studied on these electrodes; phenol, ferricyanide, and potassium ethylxanthogenate ...
Věra Stará, Miloslav Kopanica
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Hexacyanoferrate‐anion exchanger‐modified carbon paste electrodes
Electroanalysis, 1997AbstractThe preparation of carbon paste electrodes (CPEs) modified with the hexacyanoferrate ion attached to synthetic hydrotalcite, a solid anion exchange resin Wofatit SBW and a liquid anion exchanger tris‐octylamine (TOA) used as pasting liquid, is described. Stability of the electrodes and their electrocatalytic properties were investigated.
Ján Labuda, Monika Hudáková
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Carbon paste electrodes electrochemically modified with cyclodextrins
Journal of Solid State Electrochemistry, 2003Cyclic voltammetry was used in order to obtain carbon paste electrodes (CPEs) modified with α- and β-cyclodextrins (CPEα-CD, CPEβ-CD) in HClO4 media as electrolyte. The modified CPEs were obtained by applying 30 potential cycles, thus forming on the substrate a film with electroactive characteristics; a rise in current for the anodic and cathodic peaks
Gabriela Roa Morales +2 more
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Organo-montmorillonites as carbon paste electrode modifiers
Journal of Solid State Electrochemistry, 2015Alkylammonium derivatives of montmorillonite (standards SAz-1 and SWy-2, Source Clay Repository (USA)) were prepared by sorption of hexadecyltrimethylammonium, benzyldimethylhexadecylammonium and hexadecylpyridinium cations. Characterization of the prepared alkylammonium montmorillonites by means of X-ray diffraction and infrared spectroscopy proved a ...
Zuzana Navrátilová, Martin Mucha
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Determination of gold using clay modified carbon paste electrode
Fresenius' Journal of Analytical Chemistry, 2000Sorption of gold(III) chlorocomplexes was studied by means of a carbon paste electrode modified with montmorillonite. Anionic exchange behavior was found in chloride media with low ionic strength. Anionic sorption of [AuCl4]- can be used as a preconcentration step to the determination of Au(III).
Z, Navrátilová, P, Kula
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Electrocatalitic behaviour of serpentinite modified carbon paste electrode
Journal of Electroanalytical Chemistry, 2017Abstract Electrochemistry of carbon paste electrode which contained serpentinite powder and graphite in 1:1 weight ratio was examined in three-electrode cell regarding its electrocatalytic and sensing properties. For this purpose, red-ox reactions of potassium ferrocyanide in aqueous solutions as benchmark media and pesticide tebufenozide (TBF) were ...
Ranđelović, Marjan S. +3 more
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ChemInform Abstract: The Zeolite‐Modified Carbon Paste Electrode.
ChemInform, 1988AbstractThe electrochemical behavior of a Cu(II)‐exchanged zeolite‐modified electrode, constructed by incorporating the zeolite into the carbon powder + paraffin oil matrix used to manufacture a conventional carbon paste electrode, is investigated by cyclic voltammetric measurements.
N. EL MURR +3 more
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Trace analysis at clay‐modified carbon paste electrodes
Electroanalysis, 1989AbstractCarbon paste electrodes modified with montmorillonite clay are used for the collection of iron(III) from dilute solutions followed by voltammetric quantification of the surface‐bound cation. Open‐circuit conditions are maintained during the ion exchange preconcentration.
Joseph Wang, Teddy Martinez
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Glassy carbon paste electrodes modified with polyphenol oxidase
Analytica Chimica Acta, 2002Abstract The electrochemical behavior of a glassy carbon paste electrode (GCPE) is evaluated in comparison to that of graphite paste electrode (gPE) and glassy carbon electrode (GCE). Important shifting in the peak potentials and increases in the peak currents for catechol, ascorbic acid, dopamine and hydroquinone were obtained for the GCPE and its ...
Marcela C. Rodrı́guez +1 more
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Modified carbon paste electrodes for Cu(II) determination
Materials Science and Engineering: C, 2012Abstract A new Cu 2+ carbon paste electrode (CPE) using 2,2′-(1E,1′E)-1,1′-(2,2′-azanediylbis (ethane-2,1-diyl)bis(azan-1-yl-1-ylidene))bis(ethan-1-yl-1-ylidene)diphenol (ADEZEDP) has been prepared. The influence of variables including sodium tetraphenylborate (NaTPB), ionophore, and amount of multiwalled carbon nanotubes (MWCNT), CdO nanowires, CdS
Mehrorang Ghaedi +5 more
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