title: 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.
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 μW cm(-2)) for 1 week.
authors.affiliation: Department of Chemical and Biological Engineering, Korea University, 1, Anam-dong, Seongbuk-gu, Seoul 136-701, Republic of Korea.
authors.forename: Jin Young
authors.initials: JY
authors.lastname: Lee
authors.forename: Hyun Yong
authors.initials: HY
authors.lastname: Shin
authors.forename: Seong Woo
authors.initials: SW
authors.lastname: Kang
authors.forename: Chulhwan
authors.initials: C
authors.lastname: Park
authors.forename: Seung Wook
authors.initials: SW
authors.lastname: Kim
mesh_terms: D001674:Bioelectric Energy Sources; D004247:DNA / Q000737:chemistry*; D004800:Enzymes, Immobilized / Q000737:chemistry; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005949:Glucose Oxidase / Q000737:chemistry*; D036103:Nanotechnology / Q000295:instrumentation*; D037742:Nanotubes, Carbon / Q000737:chemistry*
chemical_list: D004800:Enzymes, Immobilized; D037742:Nanotubes, Carbon; D004247:DNA; D005949:Glucose Oxidase