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Journal of Nanotechnology
Volume 2011 (2011), Article ID 416060, 7 pages
Research Article

Photodegradation of Chloridazon Using Coreshell Magnetic Nanocompsites

1Chemistry Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt
2National Insitute of Laser Enhanced Science, NILES, Cairo University, 12613 Cairo, Egypt

Received 5 March 2011; Accepted 2 June 2011

Academic Editor: Menka Jain

Copyright © 2011 Dina Mamdouh Fouad and Mona Bakr Mohamed. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A new synthesized magnetic nanoparticle of Fe3O4 and coreshell Fe3O4@Au is prepared chemically. A comparative study between the photocatalytic activity between Fe3O4 and core shell Au-Fe3O4 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 20 ppm 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 Fe3O4@Au nanoparticles are much more active catalyst in presence of sun light than pure Fe3O4 nanomaterials which have maximum absorption at 560 nm.