A Simple and Rapid Method for Preparing Carbon Nanopore Electrode Ensemble CNEE by Coating A Commercial Glassy Carbon GC Electrode with Chromate

Year 2016, , 1 - 7, 30.06.2016

Faruk Gokmese Ebru Gokmese Zuhal Emire

https://doi.org/10.17350/HJSE19030000025

Abstract

A simple preparation method for carbon nanopore electrode ensemble CNEE was reported. The CNEE consists of a number of pinholes which remain after coating a carbon surface with chromate. The transformation from transient to steady-state voltammetric behavior of carbon surface was presented. The effect of electrochemical technique to structure of chromate film was investigated. The optimum deposition time and optimum concentration of chromate solution for coating carbon surface substantially were determined for bulk electrolysis BE technique. On the other hand for cyclic voltammetry CV , the effects of scan rate, number of cycle and coating solution concentration on forming uniform partly-insulating layer have been examined. The CNEE prepared by BE technique showed larger hysteresis which means more resistivity than the one prepared by CV. Under the optimum coating conditions the thinner and more useful CNEE with lower resistivity can be prepared by CV

Keywords

Carbon nanopore electrode ensemble CNEE, chromate, steady-state current, radial diffusion, microelectrode

References

• Feeney R, Kounaves SP. Microfabricated Ultramicroelectrode Arrays: Developments, Advances, and Applications in Environmental Analysis. Electroanalysis 12 (2000) 677- 684.
• Stulik K, Amatore C, Holub K, Maracek V, Kutner W. Pure and Applied Chemistry 72 (2000) 1483-1492.
• Szunerits S, Thouin L. Microelectrode Arrays. In Handbook of Electrochemistry ed. Zoski CG, Elsevier, Oxford, Ch. 10 (2007) 391-428.
• Clark WJ, McCreery RL. Inhibition of Corrosion-Related Reduction Processes via Chromium Monolayer Formation. Journal of The Electrochemical Society, 149 (2002) B379-B386.
• Wehmeyer KR, Wightman RM. Scan Rate Dependence of the Apparent Capacitance at Microvoltammetric Electrodes. Journal of Electroanalytical Chemistry and Interfacial Electrochemistry 196 (1985) 417-421.
• Kovach PM, Deakin MR, Wightman RM. Electrochemistry at Partially Blocked Carbon Fiber Microcylinder Electrodes. The Journal of Physical Chemistry 90 (1986) 4612-4617.
• Hurley BL and McCreery RL. Raman Spectroscopy of Monolayers Formed from Chromate Corrosion Inhibitor on Copper Surfaces. Journal of The Electrochemical Society 150 (2003) B367-B373.
• Ugo P, Moretto LM, Vezza F. Ionomer-Coated Electrodes and Nanoelectrode Ensembles As Electrochemical Environmental Sensors: Recent Advances and Prospects. Chemphyschem 3 (2002) 917-925.
• Penner RM, Martin CR. Preparation and Electrochemical Characterization of Ultramicroelectrode Ensembles. Analytical Chemistry 59 (1987) 2625-2630.
• Menon VP, Martin CR. Fabrication and Evaluation of Nanoelectrode Ensembles. Analytical Chemistry 67 (1995) 1920-1928.
• Hulteen JC, Menon VP, Martin CR. Template Preparation of Nanoelectrode Ensembles. Achieving the ‘pue-radial’ Electrochemical Response Limiting Current. Journal of Chemical Society-Faraday Transactions 92 (1996) 4029- 4032. Analytical Chemistry 76 (2004) 6229-6238.
• Zhang B, Zhang Y, White HS. Steady-State Voltammetric Response of the Nanopore Electrode. Analytical Chemistry 78 (2006) 477-483.