Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/45964
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dc.contributor.authorRyzhkov, Nikolay-
dc.contributor.authorCOLSON, Nora-
dc.contributor.authorAHMED, Essraa-
dc.contributor.authorPOBEDINSKAS, Paulius-
dc.contributor.authorHAENEN, Ken-
dc.contributor.authorBraun, Artur-
dc.contributor.authorJanssen, Paul-
dc.date.accessioned2025-05-12T12:59:32Z-
dc.date.available2025-05-12T12:59:32Z-
dc.date.issued2024-
dc.date.submitted2025-04-14T08:32:40Z-
dc.identifier.citationACS omega, 9 (30) , p. 32949 -32961-
dc.identifier.urihttp://hdl.handle.net/1942/45964-
dc.description.abstractWe present the change of light absorption of cyanobacteria in response to externally applied electrical polarization. Specifically, we studied the relation between electrical polarization and changes in light absorbance for a biophotoelectrode assembly comprising boron-doped diamond as semiconducting electrode and live Limnospira indicaPCC 8005 trichomes embedded in either polysaccharide (agar) or conductive conjugated polymer (PEDOT-PSS) matrices. Our study involves the monitoring of cyanobacterial absorbance and the measurement of photocurrents at varying wavelengths of illumination for switched electric fields, i.e., using the bioelectrode either as an anode or as cathode. We observed changes in the absorbance characteristics, indicating a direct causal relationship between electrical polarization and absorbing properties of L. indica. Our finding opens up a potential avenue for optimization of the performance of biophotovoltaic devices through controlled polarization. Furthermore, our results provide fundamental insights into the wavelength-dependent behavior of a bio photovoltaic system using live cyanobacteria.-
dc.description.sponsorshipThis work is financially supported by the Swiss NationalScience Foundation under project number 200021 × 10−189455and Research Foundation Flanders (FWO) grant no.G0D4920N in the framework of “Flanders/Swiss Lead AgencyProcess: Charge and energy transfer between cyanobacteriaand semiconductor electrodes under gamma-irradiation”.Financial support by the Special Research Fund (BOF) viathe Methusalem NANO network (ref.: BOF08M02) and bythe European Space Agency ESA (sustainable hydrogenproduction in space by radiation hard cyanobacterial biofilmsin a photoelectrochemical system using BDD electrodes; OSIPIdea I-2021-00820, contract number 4000137808) are grate-fully acknowledged. N.C. is grateful for the Doctoral SchoolMobility grant (U Hasselt Call 1-2023) and the Frank DeWinne Fellowship (sustainable hydrogen production for spaceapplications, # 1SF1423N). The authors thank Ilse Coninx(SCK CEN) for priceless help with cyanobacteria culturing.-
dc.language.isoen-
dc.publisher-
dc.rights2024 The Authors. Published by American Chemical Society. This publication is licensed under CC-BY-NC-ND 4.0 .-
dc.titleElectric Polarization-Dependent Absorption and Photocurrent Generation in Limnospira indica Immobilized on Boron-Doped Diamond-
dc.typeJournal Contribution-
dc.identifier.epage32961-
dc.identifier.issue30-
dc.identifier.spage32949-
dc.identifier.volume9-
local.bibliographicCitation.jcatA1-
local.type.refereedRefereed-
local.type.specifiedArticle-
dc.identifier.doi10.1021/acsomega.4c03925-
dc.identifier.pmid39100327-
dc.identifier.isiWOS:001271998400001-
local.provider.typePubMed-
local.uhasselt.internationalyes-
item.contributorRyzhkov, Nikolay-
item.contributorCOLSON, Nora-
item.contributorAHMED, Essraa-
item.contributorPOBEDINSKAS, Paulius-
item.contributorHAENEN, Ken-
item.contributorBraun, Artur-
item.contributorJanssen, Paul-
item.fullcitationRyzhkov, Nikolay; COLSON, Nora; AHMED, Essraa; POBEDINSKAS, Paulius; HAENEN, Ken; Braun, Artur & Janssen, Paul (2024) Electric Polarization-Dependent Absorption and Photocurrent Generation in Limnospira indica Immobilized on Boron-Doped Diamond. In: ACS omega, 9 (30) , p. 32949 -32961.-
item.fulltextWith Fulltext-
item.accessRightsOpen Access-
crisitem.journal.issn2470-1343-
crisitem.journal.eissn2470-1343-
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