Once the MCO3 nuclei formed in ethylene glycol by the assistance
of ultrasonic irradiation, they did not fully develop. They grew into a
number of nanoparticles via the diffusion process in EG. These
nanoparticles became larger when the lengths of times were longer.
They were still retaining their nanosize, although the reaction time
was lengthened to 5 h. Comparing to the works of Alavi and Morsali
[4,5], Sr(CH3COO)2 reacted with NaOH in ethanol with the aid of
ultrasonic irradiation to form precursors (Sr(OH)2.H2O, Sr(OH)2.8H2O
and SrCO3 mixtures), which were subsequently calcined at 400 °C to