TITLE

Electrochemical study of brucine on an electrode modified with magnetic carbon-coated nickel nanoparticles

AUTHOR(S)
Sheng-Fu Wang; Fen Xie; Ruo-Fei Hu
PUB. DATE
February 2007
SOURCE
Analytical & Bioanalytical Chemistry;Feb2007, Vol. 387 Issue 3, p933
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A novel type of glassy carbon electrode modified with magnetic carbon-coated nickel nanoparticles (C-Ni/GCE) was fabricated and the electrochemical properties of brucine were studied using it. The carbon-coated nickel nanoparticles showed excellent electrocatalytic activity for the redox of brucine and an enhanced electron transfer rate. The electrochemical behavior of brucine on the C-Ni/GCE was explored by cyclic voltammetry (CV), and a redox mechanism for brucine was proposed. A series of electrochemical parameters were calculated for brucine by CV and controlled-potential electrolysis. The C-Ni/GCE showed good sensitivity, selectivity and stability, and was applied to determine the concentration of brucine. The differential pulse voltammetry (DPV) response of the C-Ni/GCE showed that the catalytic current was linear with the concentration of brucine in the range of 4.7 × 10−8 to 2.4 × 10−4 mol l−1, with a correlation coefficient of 0.998. The detection limit was 1.4 × 10−8 mol l−1.
ACCESSION #
23819307

 

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