Synthesis And Characterization Of SnO2 Nanoparticles: Effect Of Hydrolysis Rate On The Optical Properties

R. Bargougui1*, K. Omri2, A. Mhemdi1, S. Ammar1,3

1Faculty of Sciences of Gabes, Gabes University, Cite Erriadh 6072, Tunisia

2Laboratory of Physics of Materials and Nanomaterials Applied at Environment (LaPhyMNE), Gabes University, Faculty of Sciences in Gabes, Cite Erriadh 6072, Tunisia

3Faculty of Sciences of Bizerte, University Carthage, Jarzouna 7021, Tunisia

Adv. Mater. Lett., 2015, 6 (9), pp 816-819

DOI: 10.5185/amlett.2015.5844

Publication Date (Web): Sep 06, 2015

E-mail:bargougui_radhwane@yahoo.fr

Abstract


Nanocrystalline SnO2 oxides particles have been successfully synthesized via polyol process using diethylene glycol (DEG) as a solvent, followed by powder thermal treatment. The general applicability of the process is shown and the advantages in terms of properties and processability are described. The powders thus prepared were investigated using X-ray diffractometry. (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and photoluminescence spectra (PL). The X-ray diffraction patterns of the samples were indexed to the rutile phase for SnO2.The TEM images show uniform isotropic morphologies with average sizes close to10 nm. This decrease in particle size is accompanied with a decrease in the band-gap value from 3.55 eV for SnO2 down to 3.27 eV as shown by UV-visible spectra. It is demonstrated that the crystallite size less than 10 nm can be controlled by changing the quantity of added water (rate hydrolysis h=n H2O/n Metal).

Keywords

SnO2, nanoparticle, polyol method, optical materials, photoluminescence.

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