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 language | English |
|---|---|
| Pages (from-to) | 2685-2688 |
| Number of pages | 4 |
| Journal | Biosensors and Bioelectronics |
| Volume | 26 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 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