Bioinspired energy conversion schemes

Ana L. Moore, Gary F. Moore, Michael Hambourger, Gerdenis Kodis, Miguel Gervaldo, Paul A. Liddell, Devens Gust, Thomas A. Moore

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

Abstract

A hybrid photoelectrochemical cell that oxidizes biomaterials and reduces protons to hydrogen has been developed. Upon excitation of a porphyrin sensitized, Grätzel-type anode electrons are injected into the TiO2 CB, which results in cathodic evolution of hydrogen and formation of the porphyrin radical cation. Electrons to reduce the porphyrin radical cation come from NADH, the coenzyme and substrate-to-electrode mediator which works in conjunction with various dehydrogenase enzymes. Both Pt- and hydrogenase-based catalysts are used to produce hydrogen at the cathode. The design, synthesis, and photoelectrochemical characterization of models for the donor side of PSII will also be presented. These consist of a porphyrin-based model of P680 covalently linked to phenol, modeling tyrosine, and H-bonded to imidazole, modeling histidine. This construct models the TYR/HIS mediator coupling P680 to the water oxidizing unit in PSII. Initial experiments with these compounds as sensitizers for the photoanode will be described.

Original languageEnglish
Title of host publication233rd ACS National Meeting, Abstracts of Scientific Papers
Publication statusPublished - Dec 28 2007
Event233rd ACS National Meeting - Chicago, IL, United States
Duration: Mar 25 2007Mar 29 2007

Publication series

NameACS National Meeting Book of Abstracts
ISSN (Print)0065-7727

Other

Other233rd ACS National Meeting
CountryUnited States
CityChicago, IL
Period3/25/073/29/07

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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  • Cite this

    Moore, A. L., Moore, G. F., Hambourger, M., Kodis, G., Gervaldo, M., Liddell, P. A., Gust, D., & Moore, T. A. (2007). Bioinspired energy conversion schemes. In 233rd ACS National Meeting, Abstracts of Scientific Papers (ACS National Meeting Book of Abstracts).