Abstract
A simple hydrothermal method was developed for the size-controlled synthesis of tin dioxide (SnO2) nanoparticles, using SnCl4·5H2O, ethylenediamine and hydrazine. The molar ratio of the reactants, temperature, reaction time and the surfactant were changed in order to investigate the effect of preparation parameters on the morphology and particle size of SnO2. According to scanning electron microscopy (SEM) results, ethylenediamine and hydrazine can control the particle growth and play an important role in formation of SnO2 nanostructures. The prepared SnO2 nanoparticles were characterized extensively by means of X-ray diffraction, energy-dispersive X-ray spectroscopy, SEM, transmission electron microscopy, Fourier transform infrared spectroscopy and diffuse reflectance spectroscopy. Besides, the photocatalytic properties of as-synthesized SnO2 nanoparticles have been evaluated for the degradation of methylene blue under UV light irradiation.
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