نتایج جستجو برای: pretreated glassy carbon electrode

تعداد نتایج: 354499  

Background: In this work, a new method was developed for simultaneous determination of dopamine and rutin at glassy carbon electrode modified with CuO nanoparticles doped multi-walled carbon nanotubes (CuONPs–MWNT/GCE). This modified electrode has shown excellent electrocatalytic activity toward the oxidation of rutin in acetate buffer solution (pH=5). The modified electrode lowered the overpot...

2010
Zhijuan Wang Rose-Marie Latonen Carita Kvarnström Ari Ivaska Li Niu

Arrays of aligned multi-walled carbon nanotube-ionic liquid (MIL) were assembled on silicon wafers (Si-MIL). Formation of Si-MIL was confirmed by FTIR, AFM and Raman techniques. The electrochemical measurements indicated that Si-MIL showed good electrocatalysis towards oxygen reduction compared with MIL drop-cast on a glassy carbon electrode.

Journal: :Chemical communications 2015
Shoko Aoi Kentaro Mase Kei Ohkubo Shunichi Fukuzumi

Electrocatalytic reduction of CO2 occurred efficiently using a glassy carbon electrode modified with a cobalt(II) chlorin complex adsorbed on multi-walled carbon nanotubes at an applied potential of -1.1 V vs. NHE to yield CO with a Faradaic efficiency of 89% with hydrogen production accounting for the remaining 11% at pH 4.6.

Journal: :Analytical chemistry 2006
Tribidasari A Ivandini Tata N Rao Akira Fujishima Yasuaki Einaga

Electrochemical oxidation of oxalic acid has been investigated at bare, highly boron-doped diamond electrodes. Cyclic voltammetry and flow injection analysis with amperometric detection were used to study the electrochemical reaction. Hydrogen-terminated diamonds exhibited well-defined peaks of oxalic acid oxidation in a wide pH range. A good linear response was observed for a concentration ran...

Escherichia coli is an indicator in the quality control of pharmaceutical and other samples. Reduced graphene oxide (rGO) as a kind of carbon compositions was immobilized on glassy carbon electrode (GCE). Chronoamperometric and reduction methods were used for Au NPs decoration and it completed with polyclonal E. coli antibody and 0.5 W/V% Bovine Serum Albumin solution. Morphology and structure ...

Journal: :علوم و تکنولوژی پلیمر 0
بخشعلی معصومی شیلا نجفیان مهناز سرایی علی اکبر انتظامی

copolymerization of aniline and 2-anilinoethanol was carried out by electrochemical and chemical polymerization. homo and copolymer thin films were synthesized electrochemically, under cyclic voltammetric conditions in aqueous solutions of sulfuric acid as electrolyte at room temperature. the films were deposited on the surface of working electrode [glassy carbon ()gc)(] versus ag/agcl electrod...

2013
Min Wu Wanrong Tang Junlin Gu Qingjiang Wang Pingang He Yuzhi Fang

In this work, a simple and sensitive electrochemical method was developed to determine Sudan I by cyclic voltammetry and differential pulse voltammetry using a glassy carbon electrode modified with a chitosan/carbon nanotube composite. In cyclic voltammetry, Sudan I exhibited a well-defined oxidation peak located at 0.72 V at the multi-walled carbon nanotube (MWCNT)/chitosan-modified GCE. The d...

2004
Muammer KAVANOZ Handan GÜLCE Attila YILDIZ

The anodic stripping voltammetric determination of gold was accomplished on a chemically modified glassy carbon electrode in a solution containing chloride ions. A modifying polymer, polyvinylferrocene, was coated by immersing the glassy carbon surface in its solution in methylene chloride followed by solvent evaporation. Tetrahalo complexes of gold, tetrachloroaurate(III) and tetrabromoaurate(...

2010
S. V. Lokesh

Electrochemical investigations of 1,2,4-triazole and benzotriazole in aqueous acidic media has been carried out by cyclic voltammetric measurements. Cyclic voltammetric experiments were carried on glassy carbon (GC) working electrode. Effect of potential scan rate, pH of the solution and use of different surfactant on the electrochemical behavior has been investigated. Single reduction wave was...

2011
Dalibor Stankovic Goran Roglic Ivan Andjelkovic Sandra Skrivanj Jelena Mutic Dragan Manojlovic

The analysis of Cu(II) by anodic stripping voltammetry using a Nafion-modified glassy Carbon electrode incorporated with Cu-DPABA complex (DPABA is Methyl 3,5bis{bis-[(pyridin-2-yl)methyl]amino}methyl)benzoate ) (Cu-DPABA–NA/GCE) is described. Cu(II) was accumulated in Hac-NaAc buffer pH=4 at potential of -0.3 V (vs. Ag/AgCl ref. electrode) and then determined with SWASV. Under the optimum cond...

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