Improvement of electrical properties via glucose oxidase-immobilization by actively turning over glucose for an enzyme-based biofuel cell modified with DNA-wrapped single walled nanotubes

Jin Young Lee, Hyun Yong Shin, Seong Woo Kang, Chulhwan Park, Seung Wook Kim

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

One of the major areas of study associated with enzyme fuel cells (EFCs) has been identification of redox enzymes with high electron transfer rates that lead to a high power output. The effects of a method of enzyme immobilization by actively turning over glucose on the electrical properties of a fuel cell were evaluated under ambient conditions in attempt to increase the power of an EFC modified with DNA-wrapped single walled carbon nanotubes (SWNTs). The anode cyclic voltammetry (CV cycle) electrical properties increased as a result of glucose oxidase (GOD) immobilization by actively turning over glucose. Furthermore, an EFC that employed DNA-wrapped SWNTs and GOD immobilization in conjunction with protection of the active site increased the stability of the cell, which enabled maintenance of a high level of power production (ca. 730-760μWcm-2) for 1 week.

Original languageEnglish
Pages (from-to)2685-2688
Number of pages4
JournalBiosensors and Bioelectronics
Volume26
Issue number5
DOIs
Publication statusPublished - 2011 Jan 15

Keywords

  • Carbon nanotubes
  • Enzyme activity
  • Enzyme immobilization
  • Enzyme stability
  • Enzyme-based biofuel cell
  • Glucose oxidase

ASJC Scopus subject areas

  • Biotechnology
  • Biophysics
  • Biomedical Engineering
  • Electrochemistry

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