Synthesis of nano copper shell for conductive ink in wearable electronics

Abstract

Number of emerging synthesis techniques were revealed to synthesize the copper nanoparticles (CuNp) with reduced oxide states to improve the conductivity by various researchers. This research work highlights about the synthesis of surface oxide layer free copper nanoparticles (CuNp) using less expensive chemical reduction method by reducing the oxide states. Poly Vinyl Pyrolidone were used as a capping agent and Ascorbic acid as reducing agents for minimizing the oxide layer of CuNp. SEM, XRD, FTIR and Zeta Potential by particle size analyzer of synthesized powder were characterized.SEM images shows the particle size in the range of 100-300nm. XRD peaks expressed at 43.3482, 50.4653 and 74.1109 correspondence to the planes of (111), (200) and (220) confirms the presence of nanocopper in the sample. Particle size analyzer results exhibits the average particle size of CuNp as 141.2 nm. The peaks of FTIR spectrum at 3747 cm-1, 1887 cm-1, and 1690 cm-1 confirm the presence of polyhydroxyl groups, which indicates the high dispersion rate of CuNp in the taken solvent. Further, the work reviewed to find the suitable binding agent to fabricate nanoconductive ink. The outcome of the study takes us closer towards to fabricate nano conductive ink using CuNp for flexible electronics.