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Photobioanodes Based on Nanoimprinted Electrodes and Immobilized Chloroplasts
Malmö University, Faculty of Health and Society (HS), Department of Biomedical Science (BMV).
Obducat Technol AB, S-22363 Lund, Sweden..
Malmö University, Faculty of Health and Society (HS), Department of Biomedical Science (BMV).
Obducat Technol AB, S-22363 Lund, Sweden..
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2022 (English)In: ChemElectroChem, E-ISSN 2196-0216, Vol. 9, no 2, p. 37-42Article in journal (Refereed) Published
Abstract [en]

As the global energy demand continues to increase, the interest in photosynthetic energy conversion is growing accordingly. Chloroplasts, photosynthetic organelles present in plants and algae, are attractive candidates for construction of bio solar cells; however, they have been less studied because of their complex membrane system, which restricts electrochemical communication with an electrode surface. Nevertheless, in this work photobioanodes based on planar and nanoimprinted gold substrates modified with chloroplasts were designed and evaluated. Apparently, nanoimprint lithography contributed to higher photocurrent densities, not only owing to the enlarged real surface area, but also due to boosting electrochemical communication between the photosynthetic organelles and the electrode. Combining chloroplast-modified nanoimprinted gold electrodes with a capacitive part made of a planar gold substrate, coated with a conductive polymer, resulted in a dual-feature photobioanode providing a lower open-circuit potential, i. e., -0.11 V vs. Ag|AgCl|KClsat, and an enhanced capacitance of ca. 37 F m(-2) upon illumination of 400 W m(-2).

Place, publisher, year, edition, pages
John Wiley & Sons, 2022. Vol. 9, no 2, p. 37-42
Keywords [en]
Biocatalysis, Chloroplasts, Nanoimprint lithography, Photobioanode, Photosynthesis
National Category
Analytical Chemistry
Identifiers
URN: urn:nbn:se:mau:diva-47229DOI: 10.1002/celc.202101219ISI: 000720405900001Scopus ID: 2-s2.0-85119359298OAI: oai:DiVA.org:mau-47229DiVA, id: diva2:1617232
Available from: 2021-12-06 Created: 2021-12-06 Last updated: 2024-02-05Bibliographically approved

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Aleksejeva, OlgaGenevskiy, VladislavShleev, Sergey

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