Journal of Surface Science and Technology

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Effect on Photo-Catalytic Activity of Zinc Oxide Nanoparticles upon Doping with Silver and Sulphur in Degradation Reaction of Malachite Green


Affiliations
1 Department of Chemistry, College of Natural and Computational Science, Haramaya University, Dire Dawa, Ethiopia
2 Chemistry Department, Panjab University, Chandigarh - 160014, Panjab, India
     

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Zinc Oxide nanoparticles and their corresponding sulphur, silver and silver (silver + sulphur) doped variants have been prepared by mechano-chemical synthesis. These have been used as photocatalysts and were characterized by XRD, TEM, FTIR and UV-Visible spectroscopic techniques. Photocatalytic degradation of malachite green (MG) dye over these photocatalysts was studied under visible as well as UV radiations. The (Ag, S) co-doped ZnO exhibited the highest photocatalytic efficiency both under UV as well as visible radiations. It is observed that doping of Ag and S in ZnO had synergetic effect in improving its photo-catalytic activity. Photocatalytic degradation of Malachite Green (MG) dye is found to follow a pseudo first order kinetics.

Keywords

Degradation, Mechano-Chemical, Nanoparticles, Photocatalyst, XRD
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  • Effect on Photo-Catalytic Activity of Zinc Oxide Nanoparticles upon Doping with Silver and Sulphur in Degradation Reaction of Malachite Green

Abstract Views: 289  |  PDF Views: 2

Authors

Marshet Getaye
Department of Chemistry, College of Natural and Computational Science, Haramaya University, Dire Dawa, Ethiopia
O. P. Yadav
Department of Chemistry, College of Natural and Computational Science, Haramaya University, Dire Dawa, Ethiopia
Abi Taddesse
Department of Chemistry, College of Natural and Computational Science, Haramaya University, Dire Dawa, Ethiopia
D. V. S. Jain
Chemistry Department, Panjab University, Chandigarh - 160014, Panjab, India

Abstract


Zinc Oxide nanoparticles and their corresponding sulphur, silver and silver (silver + sulphur) doped variants have been prepared by mechano-chemical synthesis. These have been used as photocatalysts and were characterized by XRD, TEM, FTIR and UV-Visible spectroscopic techniques. Photocatalytic degradation of malachite green (MG) dye over these photocatalysts was studied under visible as well as UV radiations. The (Ag, S) co-doped ZnO exhibited the highest photocatalytic efficiency both under UV as well as visible radiations. It is observed that doping of Ag and S in ZnO had synergetic effect in improving its photo-catalytic activity. Photocatalytic degradation of Malachite Green (MG) dye is found to follow a pseudo first order kinetics.

Keywords


Degradation, Mechano-Chemical, Nanoparticles, Photocatalyst, XRD

References





DOI: https://doi.org/10.17834/ijsstissst.v31i1-2.79926