Observation of hydrogen oxidation wave using glassy carbon electrode fabricated by stepwise electrolyses in ammonium carbamate aqueous solution and hydrochloric acid

2013 ◽  
Vol 88 ◽  
pp. 251-255 ◽  
Author(s):  
Shunichi Uchiyama ◽  
Hiroaki Matsuura ◽  
Yosuke Yamawaki
Keyword(s):  
Aqueous Solution ◽  
Hydrochloric Acid ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Hydrogen Oxidation ◽  
Carbon Electrode ◽  
Ammonium Carbamate ◽  
Oxidation Wave

An electrochemically aminated glassy carbon electrode for simultaneous determination of hydroquinone and catechol

The Analyst ◽  
2016 ◽  
Vol 141 (3) ◽  
pp. 1077-1082 ◽  
Author(s):  
Xiuyun Wang ◽  
Min Xi ◽  
Mengmeng Guo ◽  
Fangmeng Sheng ◽  
Guang Xiao ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Simultaneous Determination ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode ◽  
Ammonium Carbamate ◽  
Simple Strategy

A simple strategy based on the easy modification of GCE by pre-electrolyzing it in ammonium carbamate aqueous solution was employed for the simultaneous determination of HQ and CC.

Electrocatalytic Oxidation of Oxalic Acid Using a Multielectrolytic Modified Glassy Carbon Electrodes

2015 ◽  
Vol 833 ◽  
pp. 35-38
Author(s):  
Syuhei Akabe ◽  
Koichi Asaka ◽  
Takuto Takahashi ◽  
Tsubasa Kitamura ◽  
Hiroaki Matsuura ◽  
...  
Keyword(s):  
Oxalic Acid ◽  
Functional Groups ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Acidic Medium ◽  
Electrocatalytic Oxidation ◽  
Acid Oxidation ◽  
Potential Range ◽  
Carbon Electrode ◽  
Oxidation Wave

Electrocatalytic oxidation activity of oxalic acid can be observed by using a multielectrolytic modified glassy carbon electrode (MMGCE). The MMGCE was fabricated by using the following electrolytic-oxidation/reduction processes. First, the functional groups containing nitrogen atoms such as amino group are introduced by the electrode oxidation of a bare glassy carbon electrode in an ammonium carbamate aqueous solution, and next, this electrode was electroreduced in sulfuric acid, and it was found that the reduction current gradually increased as the electrolysis time increased. This suggests that functional groups containing nitrogen atoms contributing the catalytic electron transfer of hydrogen ion are introduced. To observe the electrode oxidation wave of oxalic acid, the voltammmetric measurements of oxalic acid was carried out by using MMGCE in an acidic medium. The oxidation wave of oxalic acid at low potential range was appeared in the linear sweep voltammograms. The MMGCE exhibited well-defined peak of oxalic acid oxidation in acidic medium.

Determination of the Charge Transfer Parameters of 4,4'-(Ferrocene-1,1'-diyldivinylene)bis(benzo-15-crown-5) at Glassy Carbon Electrode

1997 ◽  
Vol 62 (11) ◽  
pp. 1690-1697
Author(s):  
Mohamed El-Metwally Ghoneim ◽  
Youssef Ibrahim Moharram ◽  
Norman Taylor
Keyword(s):  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode ◽  
Peak Separation ◽  
Electrochemical Parameters ◽  
Oxidation Wave ◽  
Transfer Parameters ◽  
Digital Simulations ◽  
And Diffusion

Electrochemical parameters of 4,4'-(ferrocene-1,1'-diyldivinylene)bis(benzo-15-crown-5) were collected using cyclic voltammetry, chronoamperometry and chronopotentiometry at a glassy carbon electrode. One-electron quasi-reversible oxidation wave was obtained at Epa of 0.532 V and Epc of 0.387 V. The peak separation, ∆Ep, standard heterogeneous rate constant, k0, and diffusion coefficient, D, of the electrochemical species have been processed by convolution and deconvolution transformations. Digital simulations using the kinetic parameters were also performed.

scholarly journals Green electrochemical strategy for one-step synthesis of new catechol derivatives

RSC Advances ◽  
2019 ◽  
Vol 9 (23) ◽  
pp. 13145-13152 ◽  
Author(s):  
Arafat Toghan ◽  
Ahmed M. Abo-Bakr ◽  
Hesham M. Rageh ◽  
Mohamed Abd-Elsabour
Keyword(s):  
Aqueous Solution ◽  
Cyclic Voltammetry ◽  
Electrochemical Oxidation ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode ◽  
One Step

In this paper, we present promising results in the green electrochemical oxidation of catechol in the presence of three different thiol nucleophiles at the surface of a glassy carbon electrode in an aqueous solution using cyclic voltammetry (CV).

Amperometric Detection of Urea in Aqueous Solution by Poly(Ni-cyclam) Film-Modified Glassy Carbon Electrode

2003 ◽  
Vol 15 (1) ◽  
pp. 70-73 ◽  
Author(s):  
Salvador Jaime Ferrer ◽  
Silvia Gutiérrez Granados ◽  
Fethi Bedioui ◽  
Alejandro Alatorre Ordaz
Keyword(s):  
Aqueous Solution ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Amperometric Detection ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode

scholarly journals EVALUATION OF ADSORPTION OF COPPER IONS IN THE PERLITE USING DIFFERENTIAL PULSE VOLTAMMETRY EMPLOYING A CHITOSAN MODIFIED GLASSY CARBON ELECTRODE

2011 ◽  
Vol 08 (15) ◽  
pp. 47-53
Author(s):  
James Pyetro do Amaral NOGUEIRA ◽  
Araújo Daniel CARVALHO ◽  
Carlos Alberto MARTINEZ-HUITLE ◽  
Nedja Suely FERNANDES
Keyword(s):  
Aqueous Solution ◽  
Differential Pulse Voltammetry ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Copper Ions ◽  
Differential Pulse ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Pulse Voltammetry

In this work the perlite, an aluminosilicate constituted by 72.1% of SiO2 and 18.5% of Al2O3 was evaluated as an adsorbent of copper ions in aqueous solution using the differential pulse voltammetry technique employing a chitosan modified glassy carbon electrode (EMQ). The adsorption tests performed in the range from 5 to 30 min indicated that an adsorption of copper ions around 73% at time of 30 min was achivied

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