Assessment of WO3 electrode modified with intact chloroplasts as a novel biohybrid platform for photocurrent improvement

Página do item simplificado
dc.contributor.authorSilva, Caio César Gonçalves [UNESP]
dc.contributor.authorTorquato, Lilian Danielle de Moura [UNESP]
dc.contributor.authorde Araújo, Bárbara Camila [UNESP]
dc.contributor.authorMantilla, Hernan Dario Rojas [UNESP]
dc.contributor.authorZanoni, Maria Valnice Boldrin [UNESP]
dc.contributor.authorGarrido, Saulo Santesso [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2023-03-01T20:52:21Z
dc.date.available2023-03-01T20:52:21Z
dc.date.issued2022-10-01
dc.description.abstractThe present work describes an easy way to prepare a Chloroplast/PDA@WO3 biohybrid platform based on the deposition of chloroplasts on WO3 substrate previously modified with polydopamine (PDA) film as anchoring agent. The use of PDA as an immobilization matrix for chloroplasts, and also as an electron mediator under LED irradiation, resulted in enhanced photocurrents. The use of the chloroplasts amplified the photocurrent, when compared to the bare substrate (WO3). The best electrode performance was obtained using high intensity LED irradiation at 395 nm, for the electrode exposed for 10 min to 150 μg mL−1 of intact chloroplasts. Amperometric curves obtained by on/off cycles using an applied potential of +0.50 V, in PBS electrolyte (pH 7.0), showed that the presence of 0.2 × 10−3 mol L−1 of simazine caused an approximately 50% decrease of the photobiocurrent. Preliminary studies indicated that the synthesized platform based on intact chloroplasts is a good strategy for studying the behavior of photosynthetic entities, using an LED light-responsive WO3 semiconductor substrate. This work contributes to the understanding of photobiocatalysts that emerge as a new class of materials with sophisticated and intricate structures. These are promising materials with remarkably improved quantum efficiency with potential applications in photobioelectrocatalysis.en
dc.description.affiliationSão Paulo State University (UNESP) Institute of Chemistry Department of Analytical Physicochemical and Inorganic Chemistry National Institute of Alternative Technologies for Detection Toxicological Assessment and Removal of Micropollutants and Radioactives (INCT-DATREM), Rua Professor Francisco Degni, 55
dc.description.affiliationSão Paulo State University (UNESP) Institute of Chemistry Department of Biochemistry and Organic Chemistry, Rua Professor Francisco Degni, 55
dc.description.affiliationUnespSão Paulo State University (UNESP) Institute of Chemistry Department of Analytical Physicochemical and Inorganic Chemistry National Institute of Alternative Technologies for Detection Toxicological Assessment and Removal of Micropollutants and Radioactives (INCT-DATREM), Rua Professor Francisco Degni, 55
dc.description.affiliationUnespSão Paulo State University (UNESP) Institute of Chemistry Department of Biochemistry and Organic Chemistry, Rua Professor Francisco Degni, 55
dc.identifierhttp://dx.doi.org/10.1016/j.bioelechem.2022.108177
dc.identifier.citationBioelectrochemistry, v. 147.
dc.identifier.doi10.1016/j.bioelechem.2022.108177
dc.identifier.issn1878-562X
dc.identifier.issn1567-5394
dc.identifier.scopus2-s2.0-85132751585
dc.identifier.urihttp://hdl.handle.net/11449/241222
dc.language.isoeng
dc.relation.ispartofBioelectrochemistry
dc.sourceScopus
dc.subjectBiohybrid platform
dc.subjectIntact chloroplasts
dc.subjectMediated electron transfer
dc.subjectPhotobiocurrent enhancement
dc.subjectPhotobioelectrocatalysis
dc.titleAssessment of WO3 electrode modified with intact chloroplasts as a novel biohybrid platform for photocurrent improvementen
dc.typeArtigo

Arquivos

Coleções

Artigos - Físico Química - IQ
Artigos - Bioquímica e Tecnologia - IQ