Synthesis and Characterization of ZnO, CuO and CuO/ZnO Nanostructures by a Novel Sol-Gel Route under Ultrasonic Conditions

Abstract:

Great interests in metallic oxides have emerged because of the possibility to modify the properties of these materials for different applications such as catalysis or sensors. In this work, CuO, ZnO and CuO-ZnO nanoparticles were prepared by a novel sol-gel route under ultrasonic condition using triethanolamine as an emulsifying surfactant. Fine powders were obtained when the pH of the sols were increased to 13 using NaOH. Particle sizes of the produced oxide materials were in the range of 3-4 nm, 40-50 x 100-150 nm (diameter x length) and 100-200 nm for CuO, ZnO and CuO-ZnO, respectively. The molar ratio of triethanolamine to metal nitrate precursors was set at 2:3. TEM micrographs of these particles were obtained to elucidate the morphology of the nanoparticles. Experimental results show that the band gap energies (E_g) for CuO, ZnO and CuO-ZnO were found to be 2.71, 3.35 and 2.82 eV, respectively.

• Periodical: Advanced Materials Research (Volume 545)
• Pages: 64-70
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.545.64
• Online since: July 2012
• Authors: I.B. Abdul Rahman, M.T.M. Ayob, Faizal Mohamed, Norinsan Kamil Othman, R.L. Mohd Lawi, Radiman Shahidan
• Keywords: Copper Oxide, Copper/Zinc Oxide, Sol-Gel (SG), Ultrasonic Irradiation, Zinc Oxide (ZnO)

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