Green Synthesis, Optical, Structural, Photocatalytic, Fluorescence Quenching and Degradation Studies of ZnS Nanoparticles

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• 作者：Dasari Ayodhya ; Guttena Veerabhadram
• 关键词：ZnS NPs ; Photocatalysis ; Crystal violet ; Fluorescence activity ; Degradation study
• 刊名：Journal of Fluorescence
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：26
• 期：6
• 页码：2165-2175
• 全文大小：3,430 KB
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Biomedicine
  Biomedicine
  Biophysics and Biomedical Physics
  Biotechnology
  Biochemistry
  Analytical Chemistry
  
• 出版者：Springer Netherlands
• ISSN：1573-4994
• 卷排序：26

文摘

The study describes a simple hydrothermal method for the synthesis of zinc sulfide nanoparticles (ZnS NPs) using bovine serum albumin (BSA). The synthesized NPs were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), fluorescence, UV-visible diffuse reflectance spectra (DRS) and zeta potential techniques. The morphologies and sizes were characterized by SEM and TEM. The size of ZnS NPs was observed with an effective diameter size of 20 nm. The photocatalytic activity of ZnS NPs was evaluated by the degradation of rhodamine B (RB) dye under sunlight irradiation. The degradation reaction follows the pseudo-first order kinetics. In addition, the fluorescence quenching and binding of ZnS NPs with crystal violet (CV) molecules have been studied. The binding constant (K_a) between ZnS NPs and CV is calculated using modified Stern–Volmer equation. The photocatalytic degradation and kinetics of CV dye by ZnS NPs in the presence of UV light has been investigated using spectrofluorometer.