A New Glycothermal Process for Barium Titanate Nanoparticle Synthesis

Abstract

Barium titanate (BaTiO3) nanoparticles were synthesized at the low temperature of 80°C through a glycothermal reaction using Ba(OH)2·8H2O and amorphous titanium hydrous gel as precursors and a solution of 1,4‐butanediol and water as solvent. This processing method provides a simple low‐temperature route for producing BaTiO3 nanoparticles, which could also be extended to other systems. It is demonstrated that the size of BaTiO3 particles can be controlled by reaction conditions, such as reaction temperature and various volume ratios of 1,4‐butanediol/water.

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

“…Most literatures about solvothermal BaTiO 3 did not investigate the dissolvability of Ba(OH) 2 · 8H 2 O in nonaqueous solvent. In addition, among these, although newly-prepared amorphous TiO 2 or Ti(OH) 4 gel having the best active reactivity of all Ti-precursors for the production of BaTiO 3 nanopowder via solvothermal (hydrothermal) method had already been testified by many researchers [9,16,17], it brought about more experimental steps to result in high industry cost.…”

“…B.K. Kim et al [17] glycothermally synthesized BaTiO 3 using Ba(OH) 2 · 8H 2 O and titanium isopropoxide as precursors and 1,4-butanediol as solvent under autogeneous vapor pressures. They found that glycolic solution acted as a strong oxidizer instead of the highly alkaline conditions in the hydrothermal reaction.…”

Glycothermal synthesis and characterization of tetragonal barium titanate

“…However, there have been few studies on glycothermal synthesis of ferroelectric materials. In a previous study, we have shown that glycothermal processing method provides a simple low temperature route for producing cubic BaTiO 3 nanoparticles, which could also be extended to other systems [28].…”

Structure and dielectric nonlinear characteristics of BaTiO3 thin films prepared by low temperature process

“…However, in the ethanolthermal condition, the cubic and tetragonal forms will coexist in the bartium titanate particles [12]. Many researchers believed that the strains that develop in the particles prevent it from assuming the tetragonal form and that the presence of hydroxyl impurities in the lattice lead to defects and result in microstrains that keep the particles cubic, which is also responsible for the lower dielectric constant.…”