Structural, Optical And Electrical Properties Of Copper Oxide Nanoparticles Prepared Through Microwave Assistance
S. M. Sathiya, G. S. Okram, M. A. Jothi Rajan
Volume 2, Issue 6, Page 371-377, Year 2017 | DOI: 10.5185/amp.2017/605
Keywords: Co-precipitation, microwave, concentration, absorption, microstructure, stoichiometry, conductivity
Abstract: Microwave assisted co-precipitation method was used to synthesize copper oxide nanoparticles for various concentrations of CuCl2.2H2O (0.1 M - 0.5 M). CuO and Cu2O phases were found from X-ray diffraction (XRD) and were confirmed from Energy Dispersive X-ray Analysis (EDX) and selected area electron diffraction (SAED) data. Particle size determined from XRD data using Scherrer formula as 27 to 43 nm was compared with that obtained from Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) images. The existence of reasonably uniform size and shape was seen from SEM images. The band gaps determined UV-Visible absorption peaks and vibrational modes observed from Micro-Raman Scattering (MRS) confirm further the presence of CuO and Cu2O phases. These are further elucidated using electrical conductivity data at low temperatures that show different types of conduction mechanisms. It was found that the samples are semiconductor in nature and their electrical conductivity has increased. Hence the material can find application as gas sensors and also in regulating electrical conductivity in drug delivery systems. Copyright © 2017 VBRI Press.