Electrochemical reconstitution of biomolecules for applications as electrocatalysts for the bionanofuel cell

Jae-Woo Kim; Sang H. Choi; Peter T. Lillehei; Glen C. King; Gerald D. Watt; Sang-Hyon Chu; Yeonjoon Park; Sheila A. Thibeault

doi:10.1117/12.539268

29 July 2004 Electrochemical reconstitution of biomolecules for applications as electrocatalysts for the bionanofuel cell

Jae-Woo Kim, Sang H. Choi, Peter T. Lillehei, Glen C. King, Gerald D. Watt, Sang-Hyon Chu, Yeonjoon Park, Sheila A. Thibeault

Author Affiliations +

Proceedings Volume 5389, Smart Structures and Materials 2004: Smart Electronics, MEMS, BioMEMS, and Nanotechnology; (2004) https://doi.org/10.1117/12.539268
Event: Smart Structures and Materials, 2004, San Diego, CA, United States

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.

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Jae-Woo Kim, Sang H. Choi, Peter T. Lillehei, Glen C. King, Gerald D. Watt, Sang-Hyon Chu, Yeonjoon Park, and Sheila A. Thibeault "Electrochemical reconstitution of biomolecules for applications as electrocatalysts for the bionanofuel cell", Proc. SPIE 5389, Smart Structures and Materials 2004: Smart Electronics, MEMS, BioMEMS, and Nanotechnology, (29 July 2004); https://doi.org/10.1117/12.539268

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