Preparation of barium sulphate nanocrystals in ethanol - water mixed solvents

摘要

Precipitation of nanoparticles is an important production procedure in industry to receive nano materials that are widely used in many fields. The product properties are strongly dependent on the properties of the particles i.e., average size, size distribution and morphology. The specific properties and applications of barium sulphate nanoparticles have attracted intensive investigation. There are numerous tedious techniques for synthesis of nano particles. However, in this study, barium sulphate nanoparticles were successfully synthesized using an ordinary chemical precipitation technique. Barium sulphate nanoparticles were synthesized using barium chloride and ammonium sulphate as reagents by an ordinary precipitation process in the presence of ethanol/water mixed solvents. Different compositions of ethanol/water mixed solvents were taken for this synthesis process. Precipitated samples were characterized using scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS) and X-ray diffraction (XRD) techniques. The size and morphology were determined using XRD and SEM techniques respectively. From the XRD results, the sizes of the particles ranged from 85nm to 54nm. The particle sizes arc decreased when the vol.% of ethanol is increased.