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Jain, D. V. S.
- Effect on Photo-Catalytic Activity of Zinc Oxide Nanoparticles upon Doping with Silver and Sulphur in Degradation Reaction of Malachite Green
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Authors
Affiliations
1 Department of Chemistry, College of Natural and Computational Science, Haramaya University, Dire Dawa, ET
2 Chemistry Department, Panjab University, Chandigarh - 160014, Panjab, IN
1 Department of Chemistry, College of Natural and Computational Science, Haramaya University, Dire Dawa, ET
2 Chemistry Department, Panjab University, Chandigarh - 160014, Panjab, IN
Source
Journal of Surface Science and Technology, Vol 31, No 1-2 (2015), Pagination: 69-76Abstract
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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- Photo-catalytic Degradation of Methyl Orange Dye using ZnS and N-doped ZnS Nanoparticles under Visible Radiation
Abstract Views :323 |
PDF Views:2
Authors
Affiliations
1 Chemistry Department, Haramaya University, Post Box: 138, Dire Dawa, ET
2 Chemistry Department, HNB Garhwal Central University, Srinagar, Uttarakhand, IN
3 Chemistry Department, Panjab University, Chandigarh - 160014, IN
1 Chemistry Department, Haramaya University, Post Box: 138, Dire Dawa, ET
2 Chemistry Department, HNB Garhwal Central University, Srinagar, Uttarakhand, IN
3 Chemistry Department, Panjab University, Chandigarh - 160014, IN
Source
Journal of Surface Science and Technology, Vol 31, No 3-4 (2015), Pagination: 184-189Abstract
ZnS and N-doped-ZnS nanoparticles were prepared by aqueous chemical method under optimal conditions and characterized using XRD, TEM and UV-Visible spectroscopic techniques. As-synthesized nanomaterials were used as a photo-catalysts for the degradation of Methyl Orange (MO) dye. Effects of photo-catalyst load, pH, and substrate initial concentration on degradation of the dye in aqueous solution have been investigated. Maximum degradation (76.56 %) of methyl orange was observed using optimum pH 6 and catalyst load 250 mgL-1.Keywords
Methyl Orange, Photo Catalysis, Nanoparticles, Rate of Degradation, XRD TEM.References
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