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Title: Synthesis of zinc sulfide nanoparticles stabilized by sodium dodecylsulfate micelles and evaluation of photocatalytic activity
Authors: Devi, Longjam Meerabai
Negi, Devendra P S
Keywords: Photocatalysis;Nanoparticles;Zinc sulphide;Micelles;Degradation;Photocatalytic degradation;Dye degradation
Issue Date: 15-Dec-2015
Publisher: NISCAIR-CSIR, India
Abstract: Zinc sulfide nanoparticles have been synthesized using sodium dodecylsulfate micelles as a stabilizing agent. The as-prepared nanoparticles are characterized by ultraviolet-visible spectroscopy, energy dispersive X-ray spectroscopy, X-ray diffraction and transmission electron microscopy. The photocatalytic activity of the ZnS nanoparticles has been evaluated by monitoring the degradation of methyl orange with a UV-visible spectrophotometer. The effect of ZnS concentration on the photocatalytic degradation of the dye has been investigated. Under optimum experimental conditions, 98% of the dye is degraded in the presence of the photocatalyst during 10 min of irradiation with ultraviolet light. The turnover frequency for methyl orange degradation per mg of ZnS is calculated to be 6×1013 molecules s-1. The effect of SDS concentration on the photocatalytic degradation of the dye has also been investigated. The results suggest that SDS micelles do not catalyze the degradation of the dye. The mechanism of the photocatalytic degradation of methyl orange has been discussed.
Page(s): 1440-1445
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.54A(12) [December 2015]

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