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Open AccessArticle

Flavin-Conjugated Iron Oxide Nanoparticles as Enzyme-Inspired Photocatalysts for Azo Dye Degradation

Department of Chemical Engineering and Biotechnology, University of Cambridge, Phillipa Fawcett Drive, Cambridge CB3 0AS, UK
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Catalysts 2020, 10(3), 324; https://doi.org/10.3390/catal10030324
Received: 14 February 2020 / Revised: 4 March 2020 / Accepted: 10 March 2020 / Published: 13 March 2020
(This article belongs to the Special Issue State of the Art and Future Trends in Nanostructured Biocatalysis)
In this work, a new photocatalytic system consisting of iron oxide nanoparticles (IONPs), coated with a catechol-flavin conjugate (DAFL), is synthesized and explored for use in water remediation. In order to test the efficiency of the catalyst, the photodegradation of amaranth (AMT), an azo dye water pollutant, was performed under aerobic and anaerobic conditions, using either ethylenediaminetetraacetic acid (EDTA) or 2-(N-morpholino)ethanesulfonic acid (MES) as electron donors. Depending on the conditions, either dye photoreduction or photooxidation were observed, indicating that flavin-coated iron-oxide nanoparticles can be used as a versatile enzyme-inspired photocatalysts. View Full-Text
Keywords: water remediation; photoreduction; photooxidation; azo dye; flavin; iron oxide nanoparticles; charge transfer; reactive oxygen species; electron donor water remediation; photoreduction; photooxidation; azo dye; flavin; iron oxide nanoparticles; charge transfer; reactive oxygen species; electron donor
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MDPI and ACS Style

Nehme, S.I.; Crocker, L.; Fruk, L. Flavin-Conjugated Iron Oxide Nanoparticles as Enzyme-Inspired Photocatalysts for Azo Dye Degradation. Catalysts 2020, 10, 324.

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