A high performance electrochemical sensor for acetaminophen based on a rGO-PEDOT nanotube composite modified electrode

Tzu Yen Huang, Chung-Wei Kung, Hung Yu Wei, Karunakara Moorthy Boopathi, Chih Wei Chu, Kuo Chuan Ho

Research output: Contribution to journalArticlepeer-review

72 Citations (Scopus)

Abstract

In this study, we perform an electrochemical sensing using a conductive composite film containing reduced graphene oxide (rGO) and poly(3,4- ethylenedioxythiophene) nanotubes (PEDOT NTs) as an electrode modifier on a glassy carbon electrode (GCE). Scanning electron microscopy suggests that the rGO covers the surface of GCE uniformly and the PEDOT NTs act as a conducting bridge to connect the isolated rGO sheets. By combining these two materials, the conductivity and the surface coverage of the film can be enhanced, which is beneficial for electrochemical sensing. The rGO-PEDOT NT composite modified electrode is applied for an effective sensor to analyze acetaminophen. The obtained electrochemical activity is much higher than those obtained by the rGO- and PEDOT NT-modified electrodes; the higher electrochemical activity may be attributed to the higher conductivity and greater coverage of the rGO-PEDOT NT composite film on the GCE. Furthermore, interference tests indicate that the rGO-PEDOT NT composite modified electrode exhibits high selectivity toward the analyte. This novel method for combining the rGO and PEDOT NTs establishes a new class of carbon material-based electrodes for electrochemical sensors.

Original languageEnglish
Pages (from-to)7229-7237
Number of pages9
JournalJournal of Materials Chemistry A
Volume2
Issue number20
DOIs
Publication statusPublished - 2014 May 28

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Fingerprint

Dive into the research topics of 'A high performance electrochemical sensor for acetaminophen based on a rGO-PEDOT nanotube composite modified electrode'. Together they form a unique fingerprint.

Cite this