Abstract
Precipitation is a hopeful process for nanoparticle production due to rapid expedient, highly economic and uncomplicated. Barium sulphate nanoparticles were prepared through precipitation process via barium chloride and sodium sulphate as the reagents in water-benzene reaction medium. Eight different compositions of mixed solvents, including pure water, 20 vol. %, 30 vol. %, 50 vol. %, 70 vol. %, 80 vol. %, 90 vol. % and 95 vol. % of benzene were practiced. The effects of the volume percentage of benzene in the aqueous medium on the resultant barium sulphate nanoparticles were scrutinized. The products were characterized through X-ray diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM) with Energy Dispersive X-ray Spectrum (EDX) and Fourier Transform Infrared Spectroscopy (FTIR) techniques. The synthesized nanoparticles are well dispersed and they exhibit an orthorhombic structure and spherical in morphology with an average size of 35.9 nm. From this we establish, water-benzene mixed solvent inhibits barium sulphate nucleation growth. Copyright © 2011 VBRI press.
Highlights
The synthesis of inorganic materials with nanometer size, controlled surface properties and controlled morphology attract increasing interest recently due to its significant applications in various fields
The synthesized samples were characterized by different techniques, viz, X-ray diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM)-Energy Dispersive X-ray Spectrum (EDX), and Fourier Transform Infrared Spectroscopy (FTIR).The structure and average crystalline size were determined by X-ray diffractogram
Barium sulphate peaks are observed in the XRD spectra and this strongly infers that benzene can only modulate the physical properties of the reaction medium without changing the reaction paths and arrangements of the crystal structure
Summary
The synthesis of inorganic materials with nanometer size, controlled surface properties and controlled morphology attract increasing interest recently due to its significant applications in various fields. Barium sulphate, which is commonly referred to as barite, is desirable for several uses on account of its high specific gravity, opaqueness to Xrays, inertness and whiteness It has been panoptically utilized in industrial applications such as paper coatings, filler in plastics and pigments in paint. They may applied in the studies of biomineralization, molecular recognition, and pharmaceutical formulations. Rather than it is a very good thermoluminescence material, which is used in radiation dosimeter purposes [1,2,3,4,5,6]. There are only limited studies dealing with the formulation of nanoscale materials in the mixed solvent method
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