title: Interaction and photodegradation characteristics of fluorescein dye in presence of ZnO nanoparticles.
abstract: The interaction between xanthene dye Fluorescein (Fl) and zinc oxide (ZnO) nanoparticles is investigated under physiological conditions. From the analysis of the steady state and time resolved spectroscopic studies in aqueous solution static mode is found to be responsible in the mechanism of fluorescence quenching of the dye Fl in presence of ZnO. ZnO nanoparticles are used as photocatalyst in order to degrade Fl dye. At pH   7, a maximum degradation efficiency of 44.4% of the dye has been achieved in presence of ZnO as a nanophotocatalyst and the photodegradation follows second-order kinetics.
authors.affiliation: Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, West Bengal, India.
authors.forename: Munmun
authors.initials: M
authors.lastname: Bardhan
authors.forename: Gopa
authors.initials: G
authors.lastname: Mandal
authors.forename: Tapan
authors.initials: T
authors.lastname: Ganguly
mesh_terms: D019793:Fluorescein / Q000737:chemistry* / Q000528:radiation effects; D005456:Fluorescent Dyes / Q000737:chemistry / Q000528:radiation effects; D008027:Light; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure*; D010316:Particle Size; D015034:Zinc Oxide / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D005456:Fluorescent Dyes; D015034:Zinc Oxide; D019793:Fluorescein