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Use of Semiconducting Bismuth Oxide in Photocatalytic Bleaching of Malachite Green


Affiliations
1 Department of Chemistry, Savita Devi Jaiswal Memorial College, Shamgarh -458883(M.P.), India
2 CC Plant, DCM, Kota (Raj.), India
3 Department of Pure & Applied Chemistry, University of Kota, Kota - 324005 (Raj.), Iceland
4 Department of Chemistry, Govt. College, Bundi (Raj.), India
     

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Photocatalysis has been predicted as a promising technology for waste water treatment. Bismuth oxide has been used as effective photocatalyst for carrying out number of chemical reactions. The photocatalytic bleaching of malachite green was carried out in the presence of semiconducting Bismuth oxide and the progress of the reaction was observed spectrophotometrically. The effects of various operating variables like pH, concentration of dyes, amount of semiconductor and light intensity on the rate of bleaching of the dye was observed. A tentative mechanism has been proposed for the photocatalytic bleaching of dye.

Keywords

Photocatalytic Bleaching, Semiconductor, Bismuth Oxide, Malachite Green.
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  • Use of Semiconducting Bismuth Oxide in Photocatalytic Bleaching of Malachite Green

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Authors

Deependra Kumar Sharma
Department of Chemistry, Savita Devi Jaiswal Memorial College, Shamgarh -458883(M.P.), India
Ashish Bansal
CC Plant, DCM, Kota (Raj.), India
Rakshit Ameta
Department of Pure & Applied Chemistry, University of Kota, Kota - 324005 (Raj.), Iceland
H. S. Sharma
Department of Chemistry, Govt. College, Bundi (Raj.), India

Abstract


Photocatalysis has been predicted as a promising technology for waste water treatment. Bismuth oxide has been used as effective photocatalyst for carrying out number of chemical reactions. The photocatalytic bleaching of malachite green was carried out in the presence of semiconducting Bismuth oxide and the progress of the reaction was observed spectrophotometrically. The effects of various operating variables like pH, concentration of dyes, amount of semiconductor and light intensity on the rate of bleaching of the dye was observed. A tentative mechanism has been proposed for the photocatalytic bleaching of dye.

Keywords


Photocatalytic Bleaching, Semiconductor, Bismuth Oxide, Malachite Green.