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Solid state synthesis of ZnO nanostructures:effect of temperature on the structural andOptical properties

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Summer School on Nanostructure and Application (SSNA’2015) 2015

Solid state synthesis of ZnO nanostructures:

effect of temperature on the structural and Optical properties

Saida Mehraz, Nahed Dokhan, Boudjemaa Bezzazi, Ahmed HADDAD, BOUTAGHOU Zoheir, Abderrahmane YOUNES

Abstract : Among the different approaches to synthesize nanostructured ZnO, the solid state synthesis isone of the simplest methods to elaborate the ZnO nanoparticles. In this work we obtainednanostructured ZnO by aforesaid method using zinc nitrate tetrahydrate ZnO(NO3)2 asprecursor. The influence of calcination temperatures as 300, 400, 500 and 600°C, on thecrystallite size and the optical properties was investigated by X-Ray diffraction and UV–visible spectroscopy, respectively. The results obtained by XRD confirm that the diameter ofnanocrystallites was affected by the calcinations temperature. The UV–visible absorbancespectra of the synthesized samples reveals that the calcinations temperature plays a significantrole in the absorption characteristics, and influences the optical band-gap of the samples.Raman and FT-IR spectroscopy were performed to investigate the structural, vibrational andchemical properties of the ZnO nanostructures.

Keywords : ZnO nanostructure, FTIR, UV-Vis, solid state synthesis

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