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  • Title: A simple method for fabrication of sole composition nickel hexacyanoferrate modified electrode and its application.
    Author: Chen W, Tang J, Cheng HJ, Xia XH.
    Journal: Talanta; 2009 Dec 15; 80(2):539-43. PubMed ID: 19836517.
    Abstract:
    Nickel hexacyanoferrate film modified gold electrode was prepared by a simple chemical deposition procedure from a fresh prepared solution containing ferricyanide, Ni(2+), and sodium nitrate. The resultant films have solo composition and are significantly stable as compared to the electrochemically deposited NiHCF films. For different concentrations of Na(+) in the solution, the formal potential values of NiHCF shift according to the Nernstian behavior with a slope of 48 mV in the range of 10(-4) to 1.0M. The NiHCF film was also used for the electrocatalytic oxidation of ascorbic acid. The anodic peak current observed in cyclic voltammetry increased with the ascorbic acid concentration. At a fixed potential under hydrodynamic conditions, the calibration plot was linear over the ascorbic acid concentration range 0.1-12 mM.
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