Degradation Of A Wide Range Of Model Pollutants

3049 Words Nov 5th, 2014 13 Pages
ABSTRACT
Heterogeneous photocatalysis, has been reported to be effective for the degradation of a wide range of model pollutants in suspension. The use of nanostructured materials is one approach to improving photocatalytic efficiency. Therefore, this work is based on the use of nanomaterials such as titania and silver-zinc oxide photocatalysts to degrade amoxicillin trihydrate (a model antibiotic pollutant) in suspension under UV-C irradiation and compares the efficiencies of the photocatalysts in degrading model pollutant used in the study.

The Silver decorated Zinc oxide Nanoparticles were prepared in-house by hydrothermal synthesis that yielded nanospheres. The nanomaterial was characterized using XRD and UV Visible spectroscopy. A significant and faster degradation of amoxicillin has been observed with Degussa P25when compared with in-house synthesized titania and Ag-ZnOphotocatalysts.

Introduction
Pharmaceuticals constitute an emerging class of micropollutants, that occur in the environment due to point sources, like production effluents and waste disposal, as well as diffuse sources, like run-off from fields and anthropogenic effluents.The presence of pharmaceutical compounds such as antibiotics in the ecosystem exists from almost 30 years before. But, in mid-1990s, when the use of such antibiotics increased at alarming concentration and their presence became a thing of concern, at this point of time many new analytical technologies were developed.…
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