Size-controllable barium titanate nanopowder synthesized via one-pot solvothermal route in a mixed solvent

Abstract

Barium titanate nanopowder was synthesized via solvothermal route using water-ethanol-ethylene glycol monomethyl ether as mixed solvent and TiCl 4 -Ba(OH) 2 · 8H 2 O as precursors. The effects of water amount in a mixed solvent, synthetic temperature and reaction time on microstructure and particle size of the as-prepared barium titanate powder were investigated systematically. The results show that the particle size of barium titanate powder could be tuned by varying the synthetic parameters. The procedure presented here provides a simple route to the preparation of barium titanate nanopowder with controllable particle size.

Morphogenesis of Highly Uniform CoCO3 Submicrometer Crystals and Their Conversion to Mesoporous Co3O4 for Gas-Sensing Applications

“…In an initial stage, primary precipitates were formed instantaneously when supersaturation in the solution phase was reached. The process was followed by dissolution of unstable precipitates which was then turned into renucleation and growth of crystallites. ,− The resultant crystallites were aggregated and/or attached into final crystals, as commonly described in mineralization processes. , In this agreement, the proposed pathway is supported by our time-dependent experiments. As shown in Figure , when the reaction time was reduced to 6−9 h, the peanut-like product could not be prepared, whereas the capsule-like or rhombus products were already present.…”

Shape Control of Cobalt Carbonate Particles by a Hydrothermal Process in a Mixed Solvent: An Efficient Precursor to Nanoporous Cobalt Oxide Architectures and Their Sensing Property

“…The growth and nucleation mechanism of the CoCO 3 microsphere with uniform cuboids formed in a water/ethanol solution with a volume ratio of 1:1 can be explained by a dissolution−renucleation process , and aggregation-based mechanism. ,,, When the reagents were added into the reaction system completely at room temperature, a large amount of amorphous particles precipitated with no apparent diffraction peaks in the XRD pattern. Such an initial supersaturated amorphous phase resulted in a fast nucleation at the initial stage.…”

Formulation, Characterization and Pharmacokinetic Evaluation of Naringenin- Loaded Gastroretentive Mucoadhesive Polymeric Nanosystem for Oral Drug Delivery

“…23 In addition to that under thermal decomposition by means of the mixtu re face above melting temperature and it was cooled very slowly to form crystals which results in the formulat ion of cubic particles. 24,25,26 Figure 1a showed the mean particle size distribution of the formulated nanoparticles. Nanoparticles size is a useful parameter since its affects the drug loading and release.…”