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Removal of metals using a ZnO/Au composite under visible-light illumination
Author(s)
Date Issued
January 1, 2018
Type
Article
Abstract
Gold nanoparticles embedded into a ZnO film are prepared with a simple spin-coating technique. Photocatalytic performance of the film is studied under irradiation with the visible light. We suggest to increase the amount of Au nanoparticles in the ZnO matrix (from 0 to 400 mg in our particular case) to improve photocatalytic efficiency of the film via a combination of plasmonic-resonance and Schottky-barrier effects. We choose Fe2+ as a model representative of metals available in the wastewater. It is demonstrated that the ZnO/Au films with increased Au content reduce efficiently the amount of ferrum ions in the water solution. In particular, the film with the content ratio ZnO:Au = 1:2 serves as a good absorber for removing Fe2+ in case if their initial concentration is equal to 0.2 mM.
Citation
Ukrainian Journal of Physical Optics, 19(1), 60-68, 2018