CuS was synthesized from a stoichiometric copper chloride (CuCl2·4H2O) and
thioacetamide (CH3CSNH2, TAA) by refluxing method. In this research, 0.005 mol copper
chloride was dissolved in 100 ml of deionized water and followed by stirring at room temperature.
Then, thioacetoamide solution was added to Cu ionic solution, leading to the formation of lightgreen
complexes. Then the complexes were transferred into a three-necked refluxing pot. The
refluxing reactions were processed at 130 oC for 1.5 – 6 h. Finally green-black powders were
synthesized, washed with distilled water and ethanol several times and dried in ambient air inside
an electric oven at 80 oC for 24 h.
The products were analyzed by a Perkin Elmer TGA-7 thermogravimetric analyzer (TGA)
with the heating rate of 20 oC.min-1 in nitrogen atmosphere. A 2400 Series II Perkin Elmer
CHNS/O analyzer was recoded using cystine as standard. A Siemens D500 X-ray diffractometer
(XRD) was carried out using Cu Kα radiation with the 2θ angle scanning from 20 to 60o range, a
graphitic monochromatized and a Ni filter. A Bruker Tensor 27 Fourier transform inferred (FTIR)
spectrometer was recoded on the samples using KBr for dilution. A T64000 HORIBA Jobin Yvon
Raman spectrometer was operated using 50 mW Ar green Laser with 514.5 nm wavelength. A
JEOL JSM-6335F scanning electron microscope (SEM) equipped with an Oxfrod instruments
INCA energy dispersive X-ray spectrometer (EDX) was operated at 35 kV.