Barium Carbonate Nanorods Synthesized though Multi-Phase Equilibrium Microemulsions

Abstract

Middle-phase microemulsions (MPMs) of two systems of a cationic surfactant tetradecyltrimethylammonium bromide (TTABr)/n-butanol/ iso-octane/Na2CO3and TTABr/n-butanol/iso-octane/BaCl2were obtained. The effect of n-butanol concentrations on the phase behavior of the MPMs for the two systems was investigated. MPMs provide a simple and versatile reaction media for preparing inorganic particles with nanometer scale. On the basis of the investigations on the phase behavior of the MPMs, herein the upper-phase microemulsions (water-in-oil, W/O), and bicontinuous microemulsions (B. C.) were used for synthesizing hierarchically structured barium carbonate (BaCO3) at the nanometer scale. The synthesized BaCO3particles possess of nanostructures which were determined by Transmission Electron Microscopy (TEM) and X-ray diffraction (XRD).