A Simple and Efficient Solid-state Synthesis Method of Preparing CuO Nanoparticles in Presence of PEG 400

A Simple and Efficient Solid-state Synthesis Method of Preparing CuO Nanoparticles in Presence of PEG 400

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Vidyasagar et al. have successfully synthesized semiconducting CuO nanoparticles via one-step, solid-state reaction in the presence of polyethylene glycol 400 as size controlling agent at different temperature. The structural and chemical composition of the nanoparticles was analyzed by XRD, SEM and EDS analysis. The effect of temperature on the properties was also studied.

It was reported that the grain size of the as-synthesized CuO nanoparticles could range from 21-450 nm by controlling the temperature between 400-800 °C. The XRD patterns indicated that lattice parameters of CuO nanoparticles could be affected by temperature slightly and the increases in peak intensity at higher annealing temperatures were correspond to increased crystallinity. The UV-Vis absorption spectra showed that with increased annealing temperature, the absorption edge of the samples shifted to a longer wavelength region, which was in correspondence with the decreasing calculated optical band gap (Eg) of the CuO nanoparticles from 1.72 to 1.58 eV. It might be attributed to the increase in grain size of CuO nanoparticles at higher annealing temperatures.

Original article citation

C.C. Vidyasagar, Y. Arthoba Naik, T. G. Venkatesha and R. Viswanatha, “Solid-State Synthesis and Effect of Temperature on Optical Properties of CuO Nanoparticles”, Nano-Micro Lett. 4 (2), 73-77 (2012). http://dx.doi.org/10.3786/nml.v4i2

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