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Please use this identifier to cite or link to this item: http://hdl.handle.net/10481/47256

Title: Insights on the (Auto)Photocatalysis of Ferritin
Authors: Saenz, Natalie
Sánchez, Manuel
Gálvez Rodríguez, Natividad
Carmona Rodríguez-Acosta, Fernando
Arosio, Paolo
Domínguez Vera, José Manuel
Issue Date: Jun-2016
Abstract: Traditionally, ferritin has been considered a photocatalyst capable of photo-oxidizing organic molecules and transferring electrons to external electron acceptors when irradiated by UV–visible light. We have designed new approaches to resolve the uncertainties regarding its photocatalytical mechanism. Experiments with an Fe(II) chelator, an electrochromic indicator, and recombinant ferritin proteins indicate that the excited electrons at the conduction band of the ferritin core do not cross the protein shell. Instead, irradiation causes the electrons to reduce the ferrihydrite core to produce Fe(II) ions. These Fe(II) ions exit the protein shell to reduce electron acceptors. In the absence of electron acceptors or chelators, Fe(II) re-enters ferritin.
Sponsorship: This work was funded by MINECO and FEDER (CTQ2015-64538). N.S. would like to acknowledge funding from the U.S. Student Fulbright Scholarship.
Publisher: American Chemical Society
Keywords: Ferritin
Photocatalysis
Polyoxometalates
Iron
URI: http://hdl.handle.net/10481/47256
ISSN: 0020-1669
Citation: Saenz, N.; et al. Insights on the (Auto)Photocatalysis of Ferritin. Inorganic Chemistry, 55(12): 6047-6050 (2016). [http://hdl.handle.net/10481/47256]
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