Results 231 to 240 of about 31,334 (289)

Electrochemical Tryptophan Sensor Depending on the Electrodeposition of Au Nanoparticles on the Activated Glassy Carbon Electrode

ChemistrySelect
In the present work, a novel electrochemical sensor was designed for the electrochemical detection of tryptophan (Trp). With this object in our mind, the glassy carbon electrode (GCE), utilized as the working electrode for Trp detection, was first ...
Gamze Suvari, Muhammet Guler
semanticscholar   +1 more source

Glassy carbon electrode activation – A way towards highly active, reproducible and stable electrode surface

Electrochimica Acta, 2019
Abstract Glassy carbon (GC) is one of the most often used carbon materials in laboratory practice. Despite the fact that its electrocatalytic properties are largely surface-state dependent, a standardised procedure for its activation is lacking. This work presents a detailed, systematic investigation of a GC electrode pre-treatment based on potential
Tomas Bystron, Eva Sramkova, Filip Dvorak, Karel Bouzek   +3 more
openaire   +1 more source

Determination of Uric Acid at Electrochemically Activated Glassy Carbon Electrode

Electroanalysis, 2001
A selective and sensitive electroanalytical method was developed for the determination of uric acid in urine samples. Uric acid was preconcentrated and electroanalyzed at electrochemically activated glassy carbon electrodes. No pretreatment of uric acid sample was necessary prior to electroanalysis. Linear response was observed over the range from 0.04
Shi, K., Shiu, K. K.
openaire   +1 more source

Activation of glassy carbon electrodes by alternating current electrochemical treatment

Analytica Chimica Acta, 1985
Abstract Glassy carbon electrodes subjected to “severe” electrochemical treatment is saturated chloride solutions exhibit enhanced electrochemical reversibility compared to untreated electrodes. Apparently faster rates of electron-transfer result in lowering of the overpotential by 110–300 mV for eight electroactive species tested.
Joseph Wang, Lori D. Hutchins
openaire   +1 more source

Electrochemical study of aquapentaamineruthenium(II) using activated glassy-carbon electrodes

Inorganic Chemistry, 1984
Results of electrochemical studies of aquapentaammineruthenium(II) over the pH range of 1-8.7 by cyclic and differential-pulse voltammetry are reported. In the 0- to 0.6-V region, the III/II redox couple is clearly visible irrespective of the type of electrode used. However, in the 0-1.5-V region two additional anodic waves were noted that are resolved
Alex A. Diamantis, W. Rorer Murphy, Thomas J. Meyer   +2 more
openaire   +1 more source

Easy cleaning plus stable activation of glassy carbon electrode surface by oxygen plasma

Bioelectrochemistry, 2023
Glassy carbon (GC) electrodes are widely used in electroanalytical applications especially in bioelectrochemistry. Their use starts with an efficient surface cleaning and activation protocol, mostly based on surface polishing steps. We studied the use of an oxygen plasma exposure of GC electrodes to replace common polishing procedures.
Camille, Colin, Pierre, Levallois, Ugo, Botsos-Margerit, Franck, Clément, Dodzi, Zigah, Stéphane, Arbault   +5 more
openaire   +2 more sources

A simple procedure for activating a glassy carbon electrode

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1989
Mise au point d'une methode simple permettant d'activer la surface d'une electrode de graphite poreux. Elle consiste a bombarder la surface par un arc electrique intense genere par un dispositif comprenant une paire de diodes de 15 A. Ce procede active aussi bien le carbone vitreux qu'un traitement par laser. Cette efficacite est testee lors de l'etude
openaire   +1 more source

Mechanism of activation of glassy carbon electrodes by cathodic pretreatment

Journal of Solid State Electrochemistry, 1999
The performance of carbon electrodes depends on the surface pretreatment methods. An exclusively cathodically pretreated glassy carbon electrode (GCE) shows very good activity towards monomeric molybdate(VI) ion adsorption and its reduction. X-ray photoelectron spectroscopy studies reveal the creation of >C–O– surface groups on cathodisation.
G. Ilangovan, K. Chandrasekara Pillai
openaire   +1 more source

Application of an electro-activated glassy-carbon electrode to the determination of acetaminophen (paracetamol) in surface waters

Electrochimica Acta, 2018
An electro-activated glassy carbon electrode (aGCE) was tested as sensor for the detection of acetaminophen (APAP) in surface water samples. The best measurement conditions for the determination of APAP by Differential Pulse Voltammetry (DPV), assisted ...
Silvia Berto, L. Carena, Federico Valmacco, C. Barolo, Eleonora Conca, D. Vione, R. Buscaino, Marina Fiorito, C. Bussi, O. Abollino, M. Malandrino   +10 more
semanticscholar   +1 more source

Simultaneous Detection of Hydroquinone, Catechol and Resorcinol by an Electrochemical Sensor Based on Ammoniated-Phosphate Buffer Solution Activated Glassy Carbon Electrode

Fenxi huàxué, 2019
An electrochemical sensor was successfully fabricated by coupled ammoniated modification with PBS activation on glassy carbon electrodes (CA-GCE) and characterized by electrochemical impedance spectra.
Hongying Liu, Langlang Zhu, Zhiheng Huang, Y. Qiu, Hanxiao Xu, Jiajun Wen, Weiwei Xiong, Lihua Li, Chunchuan Gu   +8 more
semanticscholar   +1 more source