Assembly of photo-bioelectrochemical cells using photosystem I-functionalized electrodes

Ariel Efrati, Chun-Hua Lu, Dorit Michaeli, Rachel Nechushtai, Sabine Alsaoub, Wolfgang Schuhmann and Itamar Willner ()
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Ariel Efrati: Institute of Chemistry and the Minerva Center for Biohybrid Complex Systems, The Hebrew University of Jerusalem
Chun-Hua Lu: Institute of Chemistry and the Minerva Center for Biohybrid Complex Systems, The Hebrew University of Jerusalem
Dorit Michaeli: the Alexander Silberman Institute of Life Sciences and the Minerva Center for Biohybrid Complex Systems, The Hebrew University of Jerusalem
Rachel Nechushtai: the Alexander Silberman Institute of Life Sciences and the Minerva Center for Biohybrid Complex Systems, The Hebrew University of Jerusalem
Sabine Alsaoub: Analytical Chemistry, Center for Electrochemical Sciences (CES), Ruhr-Universität Bochum
Wolfgang Schuhmann: Analytical Chemistry, Center for Electrochemical Sciences (CES), Ruhr-Universität Bochum
Itamar Willner: Institute of Chemistry and the Minerva Center for Biohybrid Complex Systems, The Hebrew University of Jerusalem

Nature Energy, 2016, vol. 1, issue 2, 1-8

Abstract: Abstract The design of photo-bioelectrochemical cells based on native photosynthetic reaction centres is attracting substantial recent interest as a means for the conversion of solar light energy into electrical power. In the natural photosynthetic apparatus, the photosynthetic reaction centres are coupled to biocatalytic transformations leading to CO2 fixation and O2 evolution. Although significant progress in the integration of native photosystems with electrodes for light-to-electrical energy conversion has been achieved, the conjugation of the photosystems to enzymes to yield photo-bioelectrocatalytic solar cells remains a challenge. Here we demonstrate the assembly of integrated photosystem I/glucose oxidase or glucose dehydrogenase photo-bioelectrochemical electrodes. We highlight the photonic wiring of the biocatalysts by means of photosystem I using glucose as fuel. Our results provide a general approach to assemble photo-bioelectrochemical solar cells with wide implications for solar energy conversion, bioelectrocatalysis and sensing.

Date: 2016
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DOI: 10.1038/nenergy.2015.21

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