Nafion-stabilized two-dimensional transition metal carbide (Ti3C2Tx MXene) as a high-performance electrochemical sensor for neurotransmitter

Faisal Shahzad, Aamir Iqbal, Shabi Abbas Zaidi, Suk Won Hwang, Chong Min Koo

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Herein, we demonstrate the selective sensing of Dopamine (DA), an important neurotransmitter, by using Nafion-stabilized two-dimensional transition metal carbides (Ti3C2Tx MXenes). Ti3C2Tx was deposited on a glassy carbon electrode followed by Nafion coating to achieve a robust sensitivity (∼3 nM), good selectivity, wide detection window (0.015–10 μM), high stability, reproducibility, and outstanding recoveries for DA detection in real samples. MXene-based biosensor exhibited much better electrochemical performance when compared with reduced graphene oxide-based biosensor under similar experimental conditions due to the MXenes good electrical conductivity and negatively charged surface which assisted in the selective and sensitive detection of DA.

Original languageEnglish
Pages (from-to)338-344
Number of pages7
JournalJournal of Industrial and Engineering Chemistry
Volume79
DOIs
Publication statusPublished - 2019 Nov 25

Keywords

  • Dopamine
  • Electrochemical sensor
  • MXenes
  • TiC
  • Two-dimensional transition metal carbides

ASJC Scopus subject areas

  • Chemical Engineering(all)

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