No abstract

Zinc-based ionic liquids are found to be suitable candidates for the preparation of ZnS QDs, whose properties depend upon the alkyl chain length of imidazolium.

nanoparticles have been synthesized by a facile route employing inherently green binary mixtures of ionic liquid (IL), 1-ethyl-3-methyl imidazolium ethylsulphate, [C 2 mim][C 2 OSO 3 ] and ethylene glycol, EG. A room temperature grinding of Fe(NO) 3 $9H 2 O in the given binary mixture in the presence of NaOH led to the formation of amorphous particles, which on calcination, yielded a-Fe 2 O 3 nanoparticles (NPs). The obtained NPs have been characterized by various state of the art techniques such as X-ray diffraction, Raman spectroscopy, UV-Vis and photoluminescence spectroscopy. The surface and morphological features of NPs have been investigated using scanning and transmission electron microscopy. The prepared NPs have shown weak ferromagnetic character with an essence of superparamagnetism as probed by vibrating sample magnetometry (VSM) and Mössbauer spectroscopy. The composition of the binary mixture of solvent has been found to affect the size, morphology and characteristic properties of the prepared a-Fe 2 O 3 NPs.