Fabrication of Silver Nanoparticles Decorated on Activated Screen Printed Carbon Electrode and Its Application for Ultrasensitive Detection of Dopamine

Selvakumar Palanisamy, Balamurugan Thirumalraj, Shen Ming Chen, M. AjmalAli, K. Muthupandi, R. Emmanuel, P. Prakash, Fahad M.A. Al-Hemaid

    Research output: Contribution to journalArticlepeer-review

    36 Scopus citations

    Abstract

    In the present study, we report the fabrication of silver nanoparticles (AgNPs) decorated on activated screen printed carbon electrode (ASPCE). The AgNPs were prepared by using Justicia glauca leaf extract as a reducing and stabilizing agent and the ASPCE was prepared by a simple electrochemical activation of screen printed carbon electrode (SPCE). The ASPCE/AgNPs shows a reversible electrochemical behaviour with enhanced response for DA than that of other modified SPCEs. Under optimum conditions, the electrochemical oxidation current response of DA is linear over the concentration range from 0.05 to 45.35μM. The limit of detection is found as 0.017μM with a high sensitivity of 7.85μAμM-1cm-2.

    Original languageBritish English
    Pages (from-to)1998-2006
    Number of pages9
    JournalElectroanalysis
    Volume27
    Issue number8
    DOIs
    StatePublished - 1 Aug 2015

    Keywords

    • Activated screen printed carbon electrode
    • Bionanotechnology
    • Dopamine
    • Green synthesis
    • Silver nanoparticles

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