![]() Theory, simulation and experiment of optical properties of cobalt ferrite (CoFe 2O 4) nanoparticles Ultrafast synthesis of gold nanoparticles on cellulose nanocrystals via microwave irradiation and their dyes-degradation catalytic activity Madhusudhan Alle, Seung-Hwan Lee, Jin-Chul Kim. Suchanek, Solid State Ionics 1997, 98, 197. The result indicates that SrTiO 3 particles were annealed without dissolution and precipitation process under the present condition. In contrast, once SrTiO 3 particles are formed, the lattice constant ac decreased continuously throughout the reaction. After the BaTiO 3 particles formed firstly have disappeared completely, or the two phases coexistence stage with different lattice constant ac passed, lattice constant ac of BaTiO 3 phase re-precipitated continuously decreased with annealing time. However, these particles were gradually dissolved and then were re-precipitated in the form of cube-shape BaTiO 3 particles with a smaller lattice constant ac than that of the former phase. In the BaTiO 3 system, round particles with cubic perovskite-type structure were obtained within 1 h. Each structural evolution of BaTiO 3 and SrTiO 3ĭuring the hydrothermal treatment was investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), field emission transmission electron microscopy (FE-TEM) and thermogravimetry- differential analysis (TG-DTA). Barium titanate (BaTiO 3) and strontium titanate (SrTiO 3) nanoparticles were synthesized separately through hydrothermal reaction of crystalline TiO 2 particles and corresponding alkaline earth hydroxides, Ba(OH) 2 and Sr(OH)2 respectively, in 50 mol ![]()
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