Journal of Research on Many-body Systems

Journal of Research on Many-body Systems

A new nano biosensore for determination of L-cysteine on gold nanoparticles- modified carbon ceramic electrode

Document Type : supplement

Authors
Department of Chemistry, Marvdasht Branch , Islamic Azad University, Marvdasht , Iran
Abstract
Carbon ceramic electrodes were prepared by sol–gel processing of a hydrophobic precursor methyltrimethoxysilane (MTMOS) together with dispersed graphite microparticles according to a literature procedure. The electrochemical behavior of L-cysteine at the surface of a carbon ceramic electrode (CCE) modified with gold nanoparticles (GNPs) is described. The modified electrode showed excellent catalytic activity toward L-cysteine reduction and can be used successfully for amperometric detection of L-cysteine. Under the optimized conditions, the calibration plots are linear in the concentration range 0.165 mM- 2.64 mM. Detection limit (signal to noise is 3) and sensitivity were found to be 0.053 mM and 1769 nA / mM, respectively.
Keywords
Subjects

Volume 6, Special Issue (1)
First national conference of nanophysics and metamaterial from simulation to industry 10/2015
Autumn 2016
Pages 87-92

  • Receive Date 30 November 2015
  • Revise Date 17 April 2016
  • Accept Date 12 December 2016