Abstract
Zinc sulphide is one of the commercially important II-VI semiconductors having a wide band gap, rendering it a very attractive material for optical application especially in nanocrystalline form. Nanocomposites of ZnS and ZrS2/ZnS were prepared by simple electrochemical method; their photocatalytic properties had been investigated. The structure, composition and optical property of the product were characterized by X-ray diffraction (XRD), FE-SEM (EDAX), UV-VIS and IR techniques. The UV-VIS spectra exhibited a blue-shift with respect to that of bulk material due to quantum confinement effect. Kinetics of photocatalytic degradation of Indigo Carmine dye has been studied. The photocatalytic decolourization of the dye follows first order kinetics. The antimitotic and antibacterial activity of these nanoparticles was investigated.
Highlights
Over the past few decades, environmental problems associated with harmful organic pollutants in waste water are driving force for sustained fundamental and applied research in the area of environmental remediation [1]
From the X-ray diffraction (XRD) data it is evident that no much change in the position of diffraction peaks were observed compared to ZnS nanoparticles
We have reported the synthesis of ZnS and ZrS2 ZnS nanoparticles by novel electrochemical method which is simple, cost effective and ecofriendly method
Summary
Over the past few decades, environmental problems associated with harmful organic pollutants in waste water are driving force for sustained fundamental and applied research in the area of environmental remediation [1]. Last two decades have witnessed a rapid advancement in various techniques for the fabrication of nanoparticles [3] [4]. Among the various semiconducting materials, ZnS is a wide-band gap semiconductor of 3.8 eV having luminescent properties and photocatalytic applications. ZnS obtained by this techniques has a wide band gap of 4 - 4.6 eV [9]. An electrochemical procedure based on the dissolution of a metallic anode in a protic solvent, has been used to obtain nanoparticles ranging from 10 to 20 nm with reduced band gap [10] [11]
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