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Structural characterization of ZnO nanoparticles synthesized by co-precipitation and sol-gel method

P. VLAZAN1, C. IRINA-MOISESCU2, I. MIRON1,* , P. SFIRLOAGA1,3,* , I. GROZESCU1,2

Affiliation

  1. National Institute for Research and Development in Electrochemistry and Condensed Matter Timisoara, 300569, Romania
  2. "Politehnica” University of Timisoara, 300006, Timisoara, Romania
  3. West University of Timisoara 300223Timisoara, Romania

Abstract

ZnO nanoparticles were synthesized by two routes: co-precipitation and sol-gel method. The ZnO nanoparticles were investigated by means of X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy and UV-VIS spectroscopy. XRD analysis showed that the ZnO nanoparticles have a hexagonal crystalline structure. The average crystallite size was around 64 nm for the sample synthesized by co-preciptation method and 43 nm for the one synthesized by sol-gel method. Optical properties of synthesized ZnO nanoparticles revealed that the sample obtained by co-precipitation method has a band gap value around 3.30 eV and the sample obtained by sol-gel method around 3.27 eV..

Keywords

Zinc Oxide, Nanoparticles, Co-precipitation, Sol-gel.

Citation

P. VLAZAN, C. IRINA-MOISESCU, I. MIRON, P. SFIRLOAGA, I. GROZESCU, Structural characterization of ZnO nanoparticles synthesized by co-precipitation and sol-gel method, Optoelectronics and Advanced Materials - Rapid Communications, 9, 9-10, September-October 2015, pp.1139-1142 (2015).

Submitted at: Oct. 24, 2014

Accepted at: Sept. 9, 2015