Year-end Sale % OFF 
Abstract
The photodegradation of an azo dye, Mordant Yellow 10 (MY10), in aqueous dispersions of goethite (α-FeOOH)/H2O2 at neutral pHs under UV irradiation was studied in comparison with the dark reaction. It was found that UV irradiation could significantly accelerate the degradation of MY10. This provides an alternative approach to the treatment of non-biodegradable azo dye pollutants. The degradation process were investigated by infrared (IR), 1H NMR, total organic carbon (TOC) and gas chromatography–mass spectroscopy (GC–MS) analysis. Evidence for enhancement of OH radical generation by UV irradiation was obtained using 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) spin-trapping EPR spectroscopy. A possible degradation mechanism of MY10 by α-FeOOH/H2O2 under UV irradiation was proposed, which involves the photolysis of the surface complex of H2O2 with the oxide surface metal centers to produce OH radicals, leading to the decomposition of organic compounds.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
