Results 21 to 30 of about 2,061,430 (295)

Design and Construction of New Potentiometric Sensors for Determination of Copper(II) Ion Based on Copper Oxide Nanoparticles

International Journal of Electrochemical Science, 2015
New chemically modified carbon paste (CPEs) and screen-printed electrodes (SPEs) were fabricated incorborating copper oxide nanoparticles (CuO NPs) as a neutral ionophore and explored as Cu(II) selective electrodes.
Tamer Awad Ali, Gehad G. Mohamed, Ahmed R. Othman   +2 more
doaj   +3 more sources

Electrocatalytic Evolution of Oxygen Gas at Cobalt Oxide Nanoparticles Modified Electrodes

International Journal of Electrochemical Science, 2012
The electrocatalysis of oxygen evolution reaction (OER) at cobalt oxide nanoparticles (nano-CoOx) modified GC, Au and Pt electrodes has been examined using cyclic voltammetry.
Ibrahim M. Sadiek, Ahmad M. Mohammad, Mohamed E. El-Shakre, M. Ismail Awad, Mohamed S. El-Deab, Bahgat E. El-Anadouli   +5 more
doaj   +1 more source

Different Aspects of the Voltammetric Detection of Vitamins: A Review

Biosensors, 2023
Vitamins comprise a group of organic chemical compounds that contribute significantly to the normal functioning of living organisms. Although they are biosynthesized in living organisms, some are also obtained from the diet to meet the needs of organisms,
Denise Kiamiloglou, Stella Girousi
doaj   +1 more source

Gold Electrodes Modified with Self-Assembled Layers Made of Sulphur Compounds and Gold Nanoparticles Used for Selective Electrocatalytic Oxidation of Catecholamine in the Presence of Interfering Ascorbic and Uric Acids

International Journal of Electrochemistry, 2011
Gold electrodes modified with S-containing compounds and gold nanoparticles were used for determination of epinephrine (EP) in aqueous solution. The modified electrodes exhibited a good sensitivity, reproducibility, and stability.
Teresa Łuczak
doaj   +1 more source

Physical Surface Modification of Carbon-Nanotube/Polydimethylsiloxane Composite Electrodes for High-Sensitivity DNA Detection

Nanomaterials, 2021
The chemical modification of electrode surfaces has attracted significant attention for lowering the limit of detection or for improving the recognition of biomolecules; however, the chemical processes are complex, dangerous, and difficult to control ...
Junga Moon, Huaide Jiang, Eun-Cheol Lee
doaj   +1 more source

Glycerol Oxidation on Pd Electrodes Modified with Pt

International Journal of Electrochemical Science, 2014
The elelctrocatalytic oxidation of glycerol on Pd electrode modified with Pt is investigated. The Pt- modified Pd electrodes with different Pt loadings are prepared by means of potentiostatic deposition of Pt on polycrystalline Pd electrodes.
Changchun Jin, Jingjing Zhang, Rulin Dong, Qisheng Huo   +3 more
doaj   +1 more source

Thick film screen printed environmental and chemical sensor array reference electrodes suitable for subterranean and subaqueous deployments [PDF]

, 2013
Purpose - Thick film environmental and chemical sensor arrays designed for deployment in both subterranean and submerged aqueous applications are reported.Design/methodology/approach - Various choices of materials for reference electrodes employed in ...
Atkinson, John, Sion, Russell, Atkinson, J.K., Sophocleous, Marios, Glanc, M., Sophocleous, M., Garcia-Breijo, Eduardo, Prakorbjanya, Mathusorn, Garcia-Breijo, Eudardo, Sion, R.P., Glanc, Monika, Prakorbjanya, M.   +11 more
core   +1 more source

Determination of MCPA through Electrocatalysis by Manganese Species

International Journal of Electrochemical Science, 2007
MnO2-modified carbon paste (CP) electrodes and Mn-modified glassy carbon (GC) electrodes show the electrochemistry of Mn species which strongly depends on the solution pH.
Namal Priyantha, Ayanthi Navaratne, Sisira Weliwegamage and Chandima B. Ekanayake
doaj   +2 more sources

Review. Electrochemical sensors used in the determination of L‐Dopa

Electrochemical Science Advances, 2022
This review is presenting the design and performance of some electrochemical sensors used for the determination of L‐dopa in real samples as reported in a series of relevant scientific papers published in the past 5 years.
Ramona Georgescu State, Jacobus (KOOS) Frederick van Staden   +1 more
doaj   +1 more source

Voltammetric performance of nanofiber structured over-oxidized poly(3,4-ethylenedioxythiophene) modified pencil graphite electrodes for dobutamine sensing

Journal of the Turkish Chemical Society, Section A: Chemistry
A modified electrode was developed for the electrochemical sensing of dobutamine (DBT), one of the catecholamines. For this modification process, pencil graphite electrodes (PGE) were modified with over-oxidized nanofiber structured poly (3,4 ...
Ayşegül Özbek, Levent Özcan
doaj   +1 more source