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Photocatlytic oxidation of congo red dye by using Co2O3–Cr2O3 as a Photocatalyst

Author: Alaa R. Amrin
Journal: Mesopotamia Environmental Journal بيئة وادي الرافدين ISSN: 24102598 Year: 2016 Volume: 2 Issue: 2 Pages: 66-74
Publisher: Babylon University جامعة بابل

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Abstract

Homogeneous crystalline chromium and cobalt oxides (Cr2O3- Co2O3) was prepared by co-precipitation method by mixing metals nitrate in the basic medium and the precipitate was calcinated at 700 C for 6 hrs. The crystalline structure of the synthesized products were analyzed by X-ray diffraction (XRD). The obtained XRD patterns of specimens revealed formation of a well-crystallized structure of double oxides after calcination at 700 C. The photocatalytic activity of double prepared oxides was investigated via following removal of congo red dye from the aqueous solution upon irradiation of reaction suspension under irradiation with UV light.

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