A glassy carbon, P3, obtained by carbonization of polyfurfuryl alcohol was used to study the changes produced by oxygen plasma treatments which were compared to those obtained by molecular oxygen. The sample was selected for its well defined mesoporosity. The aim was to study the influence of porosity on the reactivity of the sample in oxygen plasma. The results were compared to previously repo...

The present paper reports electrochemical and UV-VIS spectroscopic studies on the process of electrooxidation of quercetin 3,4'-di-O-β-glucopyranoside (Q 3,4'-diglc) molecule, at glassy carbon electrode surface in 0.1 M sodium acetate – acetic acid buffer in 90 % methanol solution. The process starts at 3'-OH group (ring B), followed by oxidation of 5,7-dihydroxyl group in ring A. As a result o...

An electrochemical method has been developed for the determination of tricresyl phosphate (TCP) in aqueous media and air. Although TCP is not an electroactive species, conversion of TCP by acid hydrolysis to cresol enables electrochemical detection techniques to be exploited. Amperometric detection was performed using glassy carbon electrode (GC), glassy carbon electrode covered with multiwall ...

Raman spectra of zinc phthalocyanine monolayers, adsorbed on gold and on glassy carbon surfaces (electrodes), are presented. These spectra have been recorded with the electrodes inside and outside an electrochemical cell filled with an aqueous electrolyte. A confocal Raman microspectrometer was used. It was demonstrated that, because this spectrometer uses low laser intensities, no damage of th...

ronment, the determination of trace Hg(II) is important. Atomic absorpt ion and inductively coupled plasma spectroscopic methods are currently widely used. Many publications on this subject focus on electrochemical methods (anodic and potentiometric stripping voltammetry) at a variety of electrode materials. Glassy carbon, goldplated glassy carbon, screen-printed carbon, platinum (Pt) and gold ...

Microstructured carbon materials are interesting for electrochemical systems such as micro fuel cell electrodes and flow fields. Glassy carbon (Sigradur G) can be microstructured by various methods such as sawing, laser machining, and reactive ion etching (RIE). An alternative for fuel cell applications is Sigracet, a graphite in a polymer matrix. Various laser wavelengths ranging from 308 to 1...