Synthesis and Characterization of Copper Nanoparticles, Using Combination of Two Different Sizes of Balls in Wet Ball Milling

The applications of nanoparticles are in biological Nano sensors, optoelectronics, Nano devices, Nano
electronics, information storage ,catalysis and Nano fluids which differ significantly from size to size of
nanoparticles. But controlling the size and preparation in bulk of nanoparticles eco-friendly is interesting.
This paper reports on preparation of Cu nanoparticles by wet milling using a planetary ball mill, taking the
combination of two different sizes of balls. The milled powder is characterized using X-ray diffraction (XRD)
and particles size analyzer. Samples have taken at 0, 18, 24, 30 and 40 hours after milling the powder. The
crystal sizes of milled powder for different milling times are characterized. By increasing the milling time
crystal size decreases. After 40 hours average crystal size of milled powder is 21nm.