Results 221 to 230 of about 31,334 (289)

Electroanalytical study of nifedipine using activated glassy carbon electrode

Journal of Pharmaceutical and Biomedical Analysis, 1998
The electrochemical properties of nifedipine have been investigated in aqueous solution by linear sweep and cyclic voltammetry. The method is based both on the reduction and on the oxidation of the drug at a glassy carbon electrode activated by applying a new pre-treatment.
Özkan, Yalçın, Şentürk, Z., Özkan, S.A.   +2 more
openaire   +3 more sources

In situ laser activation of glassy carbon electrodes

Analytical Chemistry, 1986
Laser pulses of short duration (10 ns) and high intensity (20 MW cm/sup -2/) can increase the rate of heterogeneous electron transfer at a glassy carbon electrode by 1-3 orders of magnitude. The laser pulse may be delivered in situ, directly in the solution of interest, repeatedly if desired. The heterogeneous electron transfer rate constant, k/sup 0/,
Melanie. Poon, Richard L. McCreery
openaire   +1 more source

Activation of glassy carbon electrodes by photocatalytic pretreatment

Electrochimica Acta, 2009
Abstract This paper describes a simple and rapid photocatalytic pretreatment procedure that removes contaminants from glassy carbon (GC) surfaces. The effectiveness of TiO2 mediated photocatalytic pretreatment procedure was compared to commonly used alumina polishing procedure.
Dumanli, Onur, Onar, A. Nur
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Electrochemical Biosensing Platform Using Carbon Nanotube Activated Glassy Carbon Electrode

Electroanalysis, 2007
AbstractCarbon nanotube enhanced electrochemically activated glassy carbon electrode (GCE) has been prepared and applied for sensitive electrochemical determination of DNA and DNA bases. The results indicate that the relative activation could efficiently enhance electron transfer at the pretreated GCE so that this carbon nanotube activated glassy ...
Renyun Zhang, Xuemei Wang, Chen Chen
openaire   +1 more source

Vacuum heat-treatment for activation of glassy carbon electrodes

Analytical Chemistry, 1985
Le traitement thermique d'une electrode de carbone vitreux, a 725°C sous vide pousse (
Dan T. Fagan, Ing Feng. Hu, Theodore. Kuwana   +2 more
openaire   +1 more source

Facile Preparation of Active Glassy Carbon Electrodes with Activated Carbon and Organic Solvents

Analytical Chemistry, 1999
Pretreatment of glassy carbon (GC) electrodes with 2-propanol, acetonitrile, or cyclohexane had a significant effect on electrode kinetics, adsorption, and capacitance. Reagent grade solvents slowed electron transfer rates for dopamine, ascorbic acid, Fe3+/2+, and Fe(CN)63-/4- and decreased adsorption of anthraquinone-2,6-disulfonate (AQDS) and ...
Srikanth Ranganathan, Tzu-Chi Kuo, Richard L. McCreery   +2 more
openaire   +1 more source

Electrochemistry of Redox Active Ferrocene Covalently Attached to Glassy Carbon Electrodes

Journal of The Electrochemical Society, 2023
Formation of well-ordered redox active monolayers is desirable for systematic study of electron transfer for sensor applications and generation of tailored hybrid materials. We have covalently attached 6-bromohexylferrocene (Fc(CH2)6Br) to glassy carbon electrodes through a Grignard reaction and used cyclic voltammetry to characterize interfacial ...
Brittany L. Huffman, Carrie L. Donley, Jillian L. Dempsey   +2 more
openaire   +1 more source

Green and cost-effective voltammetric assay based on activated glassy carbon electrode for determination of the plant growth regulator methyl jasmonate.

Biosensors & bioelectronics
A green, cost-effective, and efficient square-wave voltammetric (SWV) assay based on an electrochemically activated glassy carbon electrode (aGCE) for the determination of the plant growth regulator methyl jasmonate (MeJA) was developed.
K. Tyszczuk‐Rotko, Katarzyna Staniec, A. Hanaka   +2 more
semanticscholar   +1 more source

Electrochemical Characterization and Surface Analysis of Activated Glassy Carbon Neural Electrodes

2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2019
Glassy carbon (GC) neural electrodes have recently gained visibility thanks to their great resistance to corrosion combined to their ability to record and stimulate neuronal activity. To enhance their electrochemical performance, GC electrodes are often subjected to activation, either through electrical or chemical means.
M, Vomero, N C, Mondragon, T, Stieglitz
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Activation of glassy carbon electrode in aqueous and non-aqueous media

Electrochimica Acta, 1992
Abstract By recording the cyclic voltammograms at a freshly polished and electrochemically pretreated (ex situ) Tokai gce for the ferric/ferrous reaction in water, water + DMF, and water + ethanol, it was established that the activating effect of electrochemical pretreatment decreases with increasing content of the organic solvent in the solution.
Bjelica, Luka, Jovanović, Ljiljana
openaire   +1 more source