Simulation of multi-step enzyme electrodes

C. Hettige, S. D. Minteer, S. Calabrese Barton

Research output: Chapter in Book/Report/Conference proceedingConference contribution

  • 2 Citations

Abstract

Incorporation of multiple enzymes on electrode surfaces can enhance the fuel efficiency of biofuel cell anodes, by sequentially catalyzing intermediate reactions such that fuel is completely oxidized. A quantitative study of multiple enzyme systems immobilized on porous electrodes is presented, considering immobilization of all enzymes uniformly codispersed in the same phase, as well as dispersion of individual enzymes in separate phases. Multiple phases maintain nonuniform pH conditions to enable optimum activity of each enzyme, while offering exposure to a common to the anode surface where the cofactor acting as a mediator may undergo oxidation. Comparisons have been made with the performance of electrodes with all the enzymes in a single electrode phase, identifying kinetic and transport conditions under which multi-phase immobilization shows improvement over single phase systems. The models are applicable to more electron rich enzyme reaction systems.

LanguageEnglish (US)
Title of host publicationECS Transactions
Pages99-109
Number of pages11
Volume13
Edition21
DOIs
StatePublished - 2008
EventBiological Fuel Cells 3 - 213th Meeting of the Electrochemical Society - Phoenix, AZ, United States
Duration: May 18 2008May 23 2008

Other

OtherBiological Fuel Cells 3 - 213th Meeting of the Electrochemical Society
CountryUnited States
CityPhoenix, AZ
Period5/18/085/23/08

Profile

Enzyme electrodes
Enzymes
Electrodes
Anodes
Biological fuel cells
Reaction intermediates
Enzyme kinetics
Oxidation
Electrons

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Hettige, C., Minteer, S. D., & Barton, S. C. (2008). Simulation of multi-step enzyme electrodes. In ECS Transactions (21 ed., Vol. 13, pp. 99-109). DOI: 10.1149/1.3036215

Simulation of multi-step enzyme electrodes. / Hettige, C.; Minteer, S. D.; Barton, S. Calabrese.

ECS Transactions. Vol. 13 21. ed. 2008. p. 99-109.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hettige, C, Minteer, SD & Barton, SC 2008, Simulation of multi-step enzyme electrodes. in ECS Transactions. 21 edn, vol. 13, pp. 99-109, Biological Fuel Cells 3 - 213th Meeting of the Electrochemical Society, Phoenix, AZ, United States, 5/18/08. DOI: 10.1149/1.3036215
Hettige C, Minteer SD, Barton SC. Simulation of multi-step enzyme electrodes. In ECS Transactions. 21 ed. Vol. 13. 2008. p. 99-109. Available from, DOI: 10.1149/1.3036215
Hettige, C. ; Minteer, S. D. ; Barton, S. Calabrese. / Simulation of multi-step enzyme electrodes. ECS Transactions. Vol. 13 21. ed. 2008. pp. 99-109
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