Results 241 to 250 of about 31,334 (289)

Voltammetric studies of glassy carbon electrodes activated in air and steam

Carbon, 1992
Abstract Polished glassy carbon electrodes were activated in either air at 400°–800°C or steam at 790°–980°C. Square wave voltammetry of air-activated electrodes in McIlvaine buffer revealed the presence of a significant surface redox couple. Nernst plots of the peak potential vs. pH gave an average slope of — 75 ± 2 mV.
John H. Marsh, S.Walter Orchard
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Glassy Carbon Electrode Electromodification in the Presence of Organic Monomers: Electropolymerization versus Activation

Analytical Chemistry, 2020
Several reports in the literature deal with the modification of glassy carbon electrode (GCE) surface via electropolymerization of some organic monomers, particularly p-aminobenzenesulfonic acid (p-ABSA) and l-cysteine using intensive oxidative conditions, and attributed the improved electrocatalytic activities toward various analytes to the formation ...
Ali M. Abdel-Aziz, Hamdy H. Hassan, Ibrahim H. A. Badr   +2 more
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Glassy carbon electrodes: I. Characterization and electrochemical activation

2001
Electrochemical properties of glassy carbon electrodes of two types were examined, one thermally treated at 1000°C (sample K) and another thermally treated at 2500° (sample G). Mechanically polished or electrochemically polarized electrodes were characterized in NaOH, HClO 4 and H 2 SO 4 solutions by cyclic voltammetry (cv) at different sweep rates in ...
Dekanski, Aleksandar, Stevanović, Jasmina S., Stevanović, Rade M., Nikolić, Branislav Ž., Jovanović, Vladislava M.   +4 more
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Adsorption of some quinone derivatives at electrochemically activated glassy carbon electrodes

Journal of Electroanalytical Chemistry, 2004
The adsorption interactions between different quinone derivatives at electrochemically activated glassy carbon have been studied. Experimental results demonstrated that there were two different types of adsorption sites present at the activated electrode surface.
Kang Shi, Kwok-Keung Shiu
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Selective Determination of Vitamin B2 at Electrochemically Activated Glassy Carbon Electrode

Electroanalysis, 2000
Electrochemically activated glassy carbon electrodes were applied to the preconcentration and electroanalysis of Vitamin B2 (VB2) in multivitamin preparation. Voltammetric peak currents resulting from VB2 species adsorbed on activated electrodes showed linear response for VB2 concentrations in the range between 0.1 and 3.0 µM with a large slope of 12.2 
Kwok-Keung Shiu, Kang Shi
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Electrochemical Study of Catechol and Hydroquinone Using Activated Glassy Carbon Electrodes

Analytical Letters, 1987
Abstract Glassy carbon electrodes polished with some ceramics particles(TiB2 SiC and TiC) show activation for the oxidation and reduction of catechol and hydroquinone. The activation was found to depend on the hardness of glassy carbon and ceramic particles.
Makoto Aihara, Miyuki Fukata, Masahiro Komatsu   +2 more
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Flow injection catalase activity measurement based on gold nanoparticles/carbon nanotubes modified glassy carbon electrode

Talanta, 2012
Amperometric flow injection method of hydrogen peroxide analysis was developed based on catalase enzyme (CAT) immobilization on a glassy carbon electrode (GC) modified with electrochemically deposited gold nanoparticles on a multiwalled carbon nanotubes/chitosan film.
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Electrocatalytic activity of activated niclosamide on multi-walled carbon nanotubes glassy carbon electrode toward NADH oxidation

Journal of Solid State Electrochemistry, 2015
A simple and sensitive method for the electrocatalytic detection of dihydronicotinamide adenine dinucleotide (NADH) on an activated niclosamide (activatedNIC)-based modified electrode, prepared on a glassy carbon electrode modified with multi-walled carbon nanotubes (GCE/MWCNT/activatedNIC), was developed.
Cleylton Bezerra Lopes, Francisco de Assis dos Santos Silva, Phabyanno Rodrigues Lima, Johnnatan Duarte de Freitas, Jonas dos Santos Sousa, Lauro Tatsuo Kubota, Marília Oliveira Fonseca Goulart   +6 more
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Simultaneous Determination of Ranitidine and Metronidazole at Low Potential Using an Acid‐Activated Glassy Carbon Electrode

ChemistrySelect, 2023
Rejwana Karim, Protity Saha, Riva Akter, Rokaiya Falguni, Regoana Amin Shital, A. Awal, M. A. Al Mamun, A. Ahammad   +7 more
semanticscholar   +1 more source

Acid phosphate-activated glassy carbon electrode for simultaneous detection of cadmium and lead

Journal of Electroanalytical Chemistry, 2022
Dongpeng Mao, Peng Duan, Yunxian Piao
semanticscholar   +1 more source