The synthesis of cuprous nanoparticles using chemical reduction method

Abstract

This research's purpose was to synthesis Cu nanoparticles by chemical reduction method. Copper (II) sulphate pentahydrate was used as the precursor and starch as a capping agent. Ascorbic acid was then added as a reductor. Sodium Hydroxide was slowly added and as the pH goes up, the yellow solution will turn ocher as a sign that Cu nanoparticles were formed. Afterwards, the Cu nanoparticles were characterized with XRD, SEM and UV-Vis. The XRD results shows the formation of cubic Cu2O nanocrystals with the mean crystal size of 134.76 nm, the UV-vis absorbance spectra were recorded highest between 311-446 nm and the FTIR spectra shows that the functional groups existing inside the synthesized NPs are vibrating Cu-O, stretching O-H, bending O-H, and carbon traces which were stretching C-H and bending C-O, caused by impurities from starch.