Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/14368
Title: Copper modified iron oxide as heterogeneous photo-Fenton reagent for the degradation of coomasie brilliant blue R-250
Authors: Ameta, Noopur
Sharma, Jyoti
Sharma, Sanyogita
Kumar, Sudhish
Punjabi, Pinki B
Keywords: Photocatalysis
Degradation
Dye degradation
Photo-Fenton degradation
Iron oxide
Copper modified iron oxide
Issue Date: 5-Jul-2012
Abstract: The heterogeneous photo-Fenton degradation of coomasie brilliant blue R–250 under visible light has been investigated using copper modified iron oxide, which has been prepared by coprecipitation method and characterized by IR spectroscopy, scanning electron microscopy and X-ray diffraction. The rate of photocatalytic degradation of dye follows pseudo-first order kinetics. The effects of various parameters like <i style="mso-bidi-font-style:normal">p</i>H, concentration of dye, amount of photocatalyst, amount of H<sub>2</sub>O<sub>2</sub> and light intensity on the rate of the photo-Fenton degradation has also been studied. Chemical oxygen demand of the reaction mixture before and after exposure has been determined. A tentative mechanism for the photocatalytic degradation has been proposed, wherein involvement of <sup>•</sup>OH<sup> </sup>radicals has been confirmed by the drastic reduction in the reaction rate in the presence of <sup>•</sup>OH radical scavengers such as isopropanol and butylated hydroxy toluene. The retardation with butylated hydroxy toluene is much higher than with isopropanol. Under similar conditions, efficiencies of Fe<sub>2</sub>O<sub>3 </sub>and copper modified Fe<sub>2</sub>O<sub>3</sub> have been compared for the photocatalytic degradation of coomasie brilliant blue R-250.
Description: 943-948
URI: http://hdl.handle.net/123456789/14368
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.51A(07) [July 2012]

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