Abstract
Azo dyes, a kind of synthetic dye stuff, have a wide range of applications in textile, leather, food and printing industries, but it causes adverse health effects to human beings and to the ecosystem. Herein, we report the photocatalytic degradation of methyl orange dye, by using ZnS/ZnCr2O4 nanohybrid sample. The samples were prepared by simple precipitation process and characterized in order to investigate its crystallinity, morphology, functional group, photophysical properties, elemental composition and mapping. The amino acid capped ZnS/ZnCr2O4 nanohybrid show enhanced photocatalytic properties in the photodegradation of azo dye, compared to that of bare ZnS QDs and ZnCr2O4 nanoparticles. The nanohybrid remain unaffected after four cycles of azo dye degradation. The enhanced performance might be due to the formation of interface between ZnS QDs and ZnCr2O4 nanoparticles. The methionine capped ZnS/ZnCr2O4 nanohybrid provide a new hope to develop an efficient and commercializable photocatalyst with improved efficiency.
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