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
- Authors
- Lee, Jin Young; Shin, Hyun Yong; Kang, Seong Woo; Park, Chulhwan; Kim, Seung Wook
- Issue Date
- 15-1월-2011
- Publisher
- ELSEVIER ADVANCED TECHNOLOGY
- Keywords
- Enzyme-based biofuel cell; Glucose oxidase; Carbon nanotubes; Enzyme immobilization; Enzyme activity; Enzyme stability
- Citation
- BIOSENSORS & BIOELECTRONICS, v.26, no.5, pp.2685 - 2688
- Indexed
- SCIE
SCOPUS
- Journal Title
- BIOSENSORS & BIOELECTRONICS
- Volume
- 26
- Number
- 5
- Start Page
- 2685
- End Page
- 2688
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/113271
- DOI
- 10.1016/j.bios.2010.07.020
- ISSN
- 0956-5663
- 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. 730-760 mu W cm(-2)) for 1 week. (C) 2010 Elsevier B.V. All rights reserved.
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