Photodegradation of chloridazon using coreshell magnetic nanocompsites

Abstract

A new synthesized magnetic nanoparticle of Fe 3O 4 and coreshell Fe 3O 4@Au is prepared chemically. A comparative study between the photocatalytic activity between Fe 3O 4 and core shell Au-Fe 3O 4 nanoparticles has been studied on the effect of UV and sun light on the photodegradation of chloridazon. The particle has been prepared using chemical methods and the particle size and shape have been examined via transmission electron microscopy (TEM). Analysis of the degradation of 20ppm chloridazon under ultraviolet (UV) and visible light was analyzed with high-performance liquid chromatography (HPLC) and UV-Visible Spectra. Influence of different parameters on the activity photodegradation rate has been studied. The results indicate that the Fe 3O 4@Au nanoparticles are much more active catalyst in presence of sun light than pure Fe 3O 4 nanomaterials which have maximum absorption at 560nm. Copyright © 2011 Dina Mamdouh Fouad and Mona Bakr Mohamed.