Photobioelectrocatalysis of Intact Photosynthetic Bacteria Exposed to Dinitrophenol

Autor: Dr. Lilian Danielle deMoura Torquato, Rosa Maria Matteucci, Dr. Paolo Stufano, Dr. Danilo Vona, Prof. Gianluca M. Farinola, Dr. Massimo Trotta, Prof. Maria Valnice Boldrin Zanoni, Dr. Matteo Grattieri
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: ChemElectroChem, Vol 10, Iss 12, Pp n/a-n/a (2023)
Druh dokumentu: article
ISSN: 2196-0216
20230001
DOI: 10.1002/celc.202300013
Popis: Abstract The outstanding metabolic versatility of purple non‐sulphur bacteria makes these organisms an ideal candidate for developing photobioelectrochemical systems applicable in contaminated environments. Here, the effects of 2,4 dinitrophenol, a common contaminant, on purple bacteria photobioelectrocatalysis were investigated. The aromatic contaminant clearly affects current generation, with an enhanced photocurrent obtained at low dinitrophenol concentrations (0.5–1 μM), while higher values (up to 100 μM) resulted in a gradual decrease of photocurrent. The obtained electrochemical evidence, coupled to spectroscopic studies, allowed verifying the viability of the bacteria cells after exposure to dinitrophenol, and that no alteration of the photosynthetic apparatus was obtained. The results indicate that high dinitrophenol concentrations divert electrons from the extracellular electron pathway to an alternative electron sink. The present results open the door to the possible use of intact bacteria‐based photoelectrodes to develop technologies for sustainable biosensors with simultaneous environmental remediation.
Databáze: Directory of Open Access Journals
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