SYNTHESIS OF SnO2 NANOMATERIAL WITH VARIOUS MORPHOLOGIES BY HYDROTHERMAL METHOD

Abstract

SnO₂ nanomaterials with various morphologies have been successfully prepared by hydrothermal method using tin chloride and ammonia, sodium hydroxide and cetyltrimethyl ammonium bromide (CTAB) as starting materials. The surfactant CTAB is a key in determining the morphologies of the products. The SnO₂ nanoparticles with diameter of 6nm were produced by hydrothermal treatment stannic acid gel in ammonium solution. Nanorods, nanotubes and  bended foils and plates of SnO₂ can be formed by using NaOH and CTAB. The crystalline size and morphologies of the SnO₂ were characterized by X-ray diffraction (XRD), and field emission scanning electron microscopy (FESEM).  For obtained SnO₂ nanorods, the diameters of the nanorods are around 100 nm to 200 nm with lengths of several micrometers. The success of preparing various morphologies of SnO₂ nanomaterials, will improve the research and preparation of gas sensor based on SnO₂ materials.