Chemically modified multiwall carbon nanotube composite electrodes: An assessment of fabrication strategies

Aidan Fagan-Murphy, Marcus Allen, Bhavik Patel

Research output: Contribution to journalArticle

Abstract

Chemically modified electrodes have been widely used to enhance electrochemical monitoring ofanalytes that are not easily detected using traditional base conductive materials. We have investigateddifferent fabrication approaches to chemically modify multi-wall carbon nanotube (MWCNT) compositeelectrodes with Prussian blue (PB). Composite electrodes were made where Prussian blue was mixedwith MWNCTs, where Prussian blue was coated on MWCNT composite electrodes and where MWCNTswere modified by generating PB on the surface of MWCNTs. Ourfindings indicate that MWCNT modifiedPB electrodes provided good sensitivity for the detection of glutathione and exceptional stability; whilstMWCNT coated PB electrodes provided excellent sensitivity but poor stability. Suchfindings provideimportant implications on the fabrication, suitability and use of chemically modified electrodes forelectroanalysis.
Original languageEnglish
Pages (from-to)249-254
Number of pages6
JournalElectrochimica Acta
Volume152
DOIs
Publication statusPublished - 10 Jan 2015

Fingerprint

Carbon Nanotubes
Fabrication
Electrodes
Composite materials
Conductive materials
Glutathione
ferric ferrocyanide
Monitoring

Bibliographical note

© 2014 Elsevier Ltd. All rights reserved.

Keywords

  • multiwall carbon nanotubes
  • Electrodes
  • chemical sensors
  • Prussian blue
  • glutathione

Cite this

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Chemically modified multiwall carbon nanotube composite electrodes: An assessment of fabrication strategies. / Fagan-Murphy, Aidan; Allen, Marcus; Patel, Bhavik.

In: Electrochimica Acta, Vol. 152, 10.01.2015, p. 249-254.

Research output: Contribution to journalArticle

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AU - Fagan-Murphy, Aidan

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AU - Patel, Bhavik

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AB - Chemically modified electrodes have been widely used to enhance electrochemical monitoring ofanalytes that are not easily detected using traditional base conductive materials. We have investigateddifferent fabrication approaches to chemically modify multi-wall carbon nanotube (MWCNT) compositeelectrodes with Prussian blue (PB). Composite electrodes were made where Prussian blue was mixedwith MWNCTs, where Prussian blue was coated on MWCNT composite electrodes and where MWCNTswere modified by generating PB on the surface of MWCNTs. Ourfindings indicate that MWCNT modifiedPB electrodes provided good sensitivity for the detection of glutathione and exceptional stability; whilstMWCNT coated PB electrodes provided excellent sensitivity but poor stability. Suchfindings provideimportant implications on the fabrication, suitability and use of chemically modified electrodes forelectroanalysis.

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