SURFACTANT-ASSISTED SYNTHESIS OF BaTiO3 NANOPARTICLES BY MICRO-EMULSION METHOD

J. L. Gao, Y. Zhi, X. F. Ren, Y. H. Liu, College of Material Science and Engineering, Shenyang Ligong University, Shenyang, Liaoning, China. Barium titanate (B aTiO3) nanoparticles were successfully synthesized by using a surfactant-assisted method. The various processing parameters, namely, th e species of surfactant, reaction temperature and micro-emusion concentration had been varied, and the effects on the micrographs and crystal structure of BaTiO3 particles had been analyzed by scanning electron microscope (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). XRD analyses confirming the tetragonal structure of the BaTiO3 nanoparticles using hexadecyl trimethyl ammonium Bromide (CTAB) or nonylphenol polyoxyethylene ether (NP-10) as surfactant. The SEM analysis showed that by changing the species of surfactant, grains with different dimensions could be synthesized. TEM analyses indicate that BaTiO3 nanoparticles with 15–20 nm in diameter were successfully synthesized.