Author, as appears in the article.: Herrero-Medina Z; Wang P; Lielpetere A; Bashammakh AS; Alyoubi AO; Katakis I; Conzuelo F; Schuhmann W
Department: Enginyeria Química
URV's Author/s: Herrero Medina, Zaida Nair / Katakis, Ioanis
Keywords: Redox polymers Photosynthetic electron-transport Photocurrent Chlorella vulgaris Boronic acid Biophotovoltaics water redox polymers photosystem-ii photocurrent generation epoxides electrochemical characterization cyanobacteria communication chlorella vulgaris boronic acid
Abstract: Green microalgae are gaining attention in the renewable energy field due to their ability to convert light into energy in biophotovoltaic (BPV) cells. The poor exogenous electron transfer kinetics of such microorganisms requires the use of redox mediators to improve the performance of related biodevices. Redox polymers are advantageous in the development of subcellular-based BPV devices by providing an improved electron transfer while simultaneously serving as immobilization matrix. However, these surface-confined redox mediators have been rarely used in microorganism-based BPVs. Since electron transfer relies on the proximity between cells and the redox centres at the polymer matrix, the development of molecularly tailored surfaces is of great significance to fabricate more efficient BPV cells. We propose a bioanode integrating Chlorella vulgaris embedded in an Os complex-modified redox polymer. Chlorella vulgaris cells are functionalized with 3-aminophenylboronic acid that exhibits high affinity to saccharides in the cell wall as a basis for an improved integration with the redox polymer. Maximum photocurrents of (5 ± 1) µA cm−2 are achieved. The developed bioanode is further coupled to a bilirubin oxidase-based biocathode for a proof-of-concept BPV cell. The obtained results encourage the optimization of electron-transfer pathways toward the development of advanced microalgae-based biophotovoltaic devices.
Thematic Areas: Química Physical and theoretical chemistry Medicine (miscellaneous) Materiais Farmacia Engenharias iv Electrochemistry Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Biotecnología Biophysics Biology Biochemistry & molecular biology Astronomia / física
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: zaida.herrero@estudiants.urv.cat zaida.herrero@estudiants.urv.cat zaida.herrero@estudiants.urv.cat ioanis.katakis@urv.cat
Author identifier: 0000-0003-4259-7098
Record's date: 2024-09-07
Papper version: info:eu-repo/semantics/publishedVersion
Link to the original source: https://www.sciencedirect.com/science/article/pii/S1567539422000792?via%3Dihub
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Bioelectrochemistry. 146 108128-
APA: Herrero-Medina Z; Wang P; Lielpetere A; Bashammakh AS; Alyoubi AO; Katakis I; Conzuelo F; Schuhmann W (2022). A biophotoelectrode based on boronic acid-modified Chlorella vulgaris cells integrated within a redox polymer. Bioelectrochemistry, 146(), 108128-. DOI: 10.1016/j.bioelechem.2022.108128
Article's DOI: 10.1016/j.bioelechem.2022.108128
Entity: Universitat Rovira i Virgili
Journal publication year: 2022
Publication Type: Journal Publications