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Proceedings Paper

Electrochemical reconstitution of biomolecules for applications as electrocatalysts for the bionanofuel cell
Author(s): Jae-Woo Kim; Sang H. Choi; Peter T. Lillehei; Glen C. King; Gerald D. Watt; Sang-Hyon Chu; Yeonjoon Park; Sheila A. Thibeault
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Paper Abstract

Platinum-cored ferritins were synthesized as electrocatalysts by electrochemical biomineralization of immobilized apoferritin with platinum. The platinum cored ferritin was fabricated by exposing the immobilized apoferritin to platinum ions at a reduction potential. On the platinum-cored ferritin, oxygen is reduced to water with four protons and four electrons generated from the anode. The ferritin acts as a nano-scale template, a biocompatible cage, and a separator between the nanoparticles. This results in a smaller catalyst loading of the electrodes for fuel cells or other electrochemical devices. In addition, the catalytic activity of the ferritin-stabilized platinum nanoparticles is enhanced by the large surface area and particle size phenomena. The work presented herein details the immobilization of ferritin with various surface modifications, the electrochemical biomineralization of ferritin with different inorganic cores, and the fabrication of self-assembled 2-D arrays with thiolated ferritin.

Paper Details

Date Published: 29 July 2004
PDF: 9 pages
Proc. SPIE 5389, Smart Structures and Materials 2004: Smart Electronics, MEMS, BioMEMS, and Nanotechnology, (29 July 2004); doi: 10.1117/12.539268
Show Author Affiliations
Jae-Woo Kim, Science and Technology Corp. (United States)
Sang H. Choi, NASA Langley Research Ctr. (United States)
Peter T. Lillehei, NASA Langley Research Ctr. (United States)
Glen C. King, NASA Langley Research Ctr. (United States)
Gerald D. Watt, Brigham Young Univ. (United States)
Sang-Hyon Chu, National Institute of Aerospace (United States)
Yeonjoon Park, Science and Technology Corp. (United States)
Sheila A. Thibeault, NASA Langley Research Ctr. (United States)


Published in SPIE Proceedings Vol. 5389:
Smart Structures and Materials 2004: Smart Electronics, MEMS, BioMEMS, and Nanotechnology
Vijay K. Varadan, Editor(s)

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