Abstract
A simple wet chemical method has been developed to synthesize selenium nanoparticles (size 40–100 nm), by the reaction of sodium selenosulphate precursor with different organic acids in aqueous medium, under ambient conditions. Polyvinyl alcohol has been used to stabilize the selenium nanoparticles. The synthesized nanoparticles can be separated from its sol by using a high-speed centrifuge and can be redispersed in aqueous medium with a sonicator. UV-visible optical absorption spectroscopy, X-ray diffraction, energy dispersive X-rays, differential scanning calorimetry, atomic force microscopy, and transmission electron microscopy techniques have been employed to characterize the synthesized selenium nanoparticles.
Highlights
The research on the synthesis and characterization of nanomaterials has been stimulated by their technological applications
The synthesized selenium nanoparticles were characterized by UV-visible optical absorption spectroscopy, X-ray diffraction (XRD), energy dispersive X-rays (EDAX), differential scanning calorimetry (DSC), atomic force microscopy (AFM), and transmission electron microscopy (TEM) techniques
From Figure 2(A), it is clear that the intensity of selenium nanoparticles increases with the increase in sodium selenosulphate concentration
Summary
The research on the synthesis and characterization of nanomaterials has been stimulated by their technological applications. Much of the hype surrounding these materials revolves around the enhanced electrical, mechanical, and optical properties In this nanosize regime, the particles possess short-range structures that are essentially the same as that of the bulk, yet they have optical and/or electronic properties which are dramatically different from that of the bulk [1,2,3]. Selenium is an essential trace element in human body and has great importance in nourishment and medicine [5] It exists in a number of crystalline structures, the principal ones being trigonal, consisting of helical chains, and the less stable monoclinic form, consisting of Se8 rings [6]. The synthesized selenium nanoparticles were characterized by UV-visible optical absorption spectroscopy, X-ray diffraction (XRD), energy dispersive X-rays (EDAX), differential scanning calorimetry (DSC), atomic force microscopy (AFM), and transmission electron microscopy (TEM) techniques
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