Novel ginger-like morphology of barium molybdate: A promising electrocatalyst for the detection of neurotransmitter dopamine

Periyasamy Sundaresan, Yu Chi Chen, Shen Ming Chen, Tse Wei Chen, Petchi Latha, Bih Show Lou

Research output: Contribution to journalJournal Article peer-review

5 Scopus citations

Abstract

In this work, we have report a novel electrochemical sensor for the selective detection of dopamine (DA) based on ginger-like morphology of barium molybdate (BaMoO4; BaM) modified screen printed carbon electrode (SPCE). The ginger-like BaM was prepared through a simple co-precipitation technique and its physiochemical properties were systematically investigated by various analytical and spectroscopic techniques such as X-ray diffraction (XRD), Raman, field emission-scanning electron microscopy (FE-SEM) and energy-dispersive X-ray spectroscopy (EDX). Furthermore, the as-prepared ginger-like BaM was effectively investigated for the sensitive and selective electrochemical determination of DA. The ginger-like BaM/SPCE shows a reversible electrochemical behavior with superior current response for DA detection. The BaM catalyst played a significant role to electrochemical detection of DA, as a results very low detection limit (0.021 μM), wide linear response range (0.1-266 μM), well sensitivity (0.35 μAμM-1cm-2) and good selectivity in the presence of common metal ions and biological compounds. This study provides a novel idea for the fabrication of binary metal oxides and their potential application in electrochemical sensor and biosensor.

Original languageEnglish
Pages (from-to)10809-10820
Number of pages12
JournalInternational Journal of Electrochemical Science
Volume13
Issue number11
DOIs
StatePublished - 01 11 2018

Bibliographical note

Publisher Copyright:
© 2018 The Authors.

Keywords

  • Barium molybdate
  • Binary metal oxide
  • Dopamine
  • Electrochemical sensor
  • Ginger-like
  • Neurotransmitter

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