Abstract
Copper iron sulfide (CuFeS2) nanoparticles were successfully synthesized by a 300W cyclic microwave radiation, exposing onto ethylene glycol containing Cu(CH3COO)2, FeCl3·6H2O or FeCl2·4H2O and l-cysteine biomolecules. X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Raman spectrometry and X-ray photoelectron spectroscopy (XPS) revealed the presence of pure tetragonal chalcopyrite CuFeS2 nanoparticles with valence states of Cu+, Fe3+ and S2− and four Raman shifts at 215.0–218.6, 280.2–281.4, 394.4–394.9 and 472.2–473.4cm−1. A formation mechanism of the products was also proposed according to the experimental results.
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