Synthesis and characterization of cadmium sulfide nanocrystals in the presence of a new sulfur source via a simple hydrothermal method

چکیده مقاله

Solvothermal strategies were successfully used to prepare of CdS nanocrystals that employed Cd(NO3)2.4H2O and a new sulfuring agent from class of thio Schiff-base as starting materials, propylene glycol (PG) as the solvent. X-ray diffraction (XRD) pattern and transmission electron microscopy (TEM) images show that synthesized CdS nanostructures have hexagonal and cubic structure with diameter of about 12 nm. The formation of CdS nanoparticles and their structure, morphology and elemental composition were studied by means of FT-IR, XRD, SEM, HR-TEM and EDAX. The optical properties of the products were characterized by optical absorption spectra. Based on the results of experiments, it is found that reaction temperature and duration and the solvent play significant roles in the formation of CdS nanoparticles. Initiative of this work is application of a new thio Schiff-base (2-(benzylidene amino) benzenethiol (C13H11NS)) as complexing and sulfuring agent for synthesizing of CdS nanostructures. A possible formation mechanism of nanoparticles is discussed.