Abstract
Considering the meticulous synthetic procedures as well as rapid phase transformation of amorphous-Selenium (α-Se) nanoparticles, herein, an attempt has been made by employing a highly facile and rapid approach to sort out such issues. An imidazolium-based room temperature ionic liquid (RTIL) was used in the synthetic protocol, wherein it played the role of a solvent, a reducing agent as well as a stabilizing agent. The synthesis was carried out in purely ambient conditions, while Se nanoparticles formation was over within 10 min of the reaction. The appearance of brick-red color indicated the formation of α-Se nanoparticles, which was further confirmed by various techniques such as XRD, Raman mapping and TEM. The electron based microscopic studies revealed the average size of the nanoparticles as 34 ± 5 nm with globular morphology. An important aspect of this work is that the α-Se nanoparticles were stable for more than 1 month, as compared to a few minutes-to-days, known hitherto. The phase stability of the nanoparticles has been explained taking into account of the structural and the fluidic aspects of the RTIL. Besides, these nanoparticles exhibited fairly good antioxidant properties, which have been discussed by comparing with standard antioxidant.
Published Version
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