Demonstration of the advantages of using bamboo-like nanotubes for electrochemical biosensor applications compared with single walled carbon nanotubes

Yook Heng Lee, Alison Chou, Jun Yu, Ying Chen, J. Justin Gooding

Research output: Contribution to journalArticle

73 Citations (Scopus)

Abstract

The modification of glassy carbon electrodes with random dispersions of nanotubes is currently the most popular approach to the preparation of carbon nanotube modified electrodes. The performance of glassy carbon electrodes modified with a random dispersion of bamboo type carbon nanotubes was compared with single walled carbon nanotubes modified glassy carbon electrodes and bare glassy carbon electrodes. The electrochemical performance of all three types for electrode were compared by investigating the electrochemistry with solution species and the oxidation of guanine and adenine bases of surface adsorbed DNA. The presence of edge planes of graphene at regular intervals along the walls of the bamboo nanotubes resulted in superior electrochemical performance relative to SWNT modified electrodes from two aspects. Firstly, with solution species the peak separation of the oxidation and reduction waves were smaller indicating more rapid rates of electron transfer. Secondly, a greater number of electroactive sites along the walls of the bamboo-carbon nanotubes (BCNTs) resulted in larger current signals and a broader dynamic range for the oxidation of DNA bases.

Original languageEnglish
Pages (from-to)1457-1462
Number of pages6
JournalElectrochemistry Communications
Volume7
Issue number12
DOIs
Publication statusPublished - Dec 2005

Fingerprint

Bamboo
Single-walled carbon nanotubes (SWCN)
Biosensors
Nanotubes
Demonstrations
Glassy carbon
Electrodes
Carbon Nanotubes
Carbon nanotubes
Oxidation
DNA
Graphite
Guanine
Electrochemistry
Adenine
Dispersions
Graphene
Electrons

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Analytical Chemistry
  • Electrochemistry

Cite this

Demonstration of the advantages of using bamboo-like nanotubes for electrochemical biosensor applications compared with single walled carbon nanotubes. / Lee, Yook Heng; Chou, Alison; Yu, Jun; Chen, Ying; Gooding, J. Justin.

In: Electrochemistry Communications, Vol. 7, No. 12, 12.2005, p. 1457-1462.

Research output: Contribution to journalArticle

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