Glucose biosensor based on carbon nanotube epoxy composites

Briza Pérez, Martin Pumera, Manel Del Valle, Arben Merkoçi, Salvador Alegret

Research output: Contribution to journalArticle

72 Citations (Scopus)

Abstract

A novel glucose biosensor based on a rigid and renewable carbon nanotube (CNT) based biocomposite is reported. The biosensor was based on the immobilization of glucose oxidase (GOx) within the CNT epoxy-composite matrix prepared by dispersion of multi-wall CNT inside the epoxy resin. The use of CNT, as the conductive part of the composite, ensures better incorporation of enzyme into the epoxy matrix and faster electron transfer rates between the enzyme and the transducer. Experimental results show that the CNT epoxy composite biosensor (GOx-CNTEC) offers an excellent sensitivity, reliable calibration profile, and stable electrochemical properties together with significantly lower detection potential (+0.55 V) than GOx-graphite epoxy composites (+0.90 V; difference ΔE = 0.35 V). The results obtained favorably compare to those of a glucose biosensor based on a graphite epoxy composite (GOx-GEC).

Original languageEnglish
Pages (from-to)1694-1698
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Volume5
Issue number10
DOIs
Publication statusPublished - 2005

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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