The Effect of Ultrasonic Treatment on the Particle Size and Specific Surface Area of LaCoO3

Low‐Temperature Synthesis and Gas Sensitivity of Perovskite‐Type LaCoO3 Nanoparticles

“…Carabalí et al [33] synthesized LaCoO 3 by the acrylamide polymerization method using radiation, reporting that the compound begins its formation at 500 ∘ C and the formation of the single phase was around 700 ∘ C. Jung and Hong [24] reported the formation of LaCoO 3 at 650 ∘ C when it was prepared from an aqueous solution of metallic nitrate salts in presence of malic acid, later a drying process by microwave radiation, and finally a thermal treatment. Similarly, Sompech et al [34] synthesized perovskite at 600 ∘ C employing a mechanochemical method. In the present work, LaCoO 3 powders were obtained employing a microwave-assisted colloidal method in presence of ethylenediamine and a further calcination process from a temperature of 500 ∘ C and higher.…”

Characterization of LaCoO3Perovskite Catalyst for Oxygen Reduction Reaction in Zn-air Rechargeable Batteries

“…By only 1 hour of the ball-milling, the particle size sharply decreased to ~18% of that of the untreated powder, and then size decreased to ~0.6μm after 4 hours. As generally well known, when the particle size decreased continuously, the surface area increased in contrast 17,18) . Also, Table 1 shows values of the mean particle size and the surface area for the untreated and the ball-milled LaCoO3 powders.…”

Physical and chemical characteristics of Asian sea bass bio‐calcium powders as affected by ultrasonication treatment and drying method

“…The fiber lengths of cellulose were reduced to 30-50 μm from the original value of 80-120 μm with 1 hr ultrasonication and became 20-30 μm with 5 hr treatment (Sumari et al, 2013). Similarly, the particle size of LaCoO 3 powders was decreased from 4.90 to 3.24, 2.89, and 1.74 µm after treating with ultrasonic bath for 2, 4, and 6 min, respectively (Sompech et al, 2012).…”

“…(Santos et al, 2009). This cavitation effect of ultrasound could be used for reducing the particle size of organic substances (Bi et al, 2015;Gilca et al, 2015;Sumari et al, 2013) or inorganic substances (Franco et al, 2004;Hassan et al, 2013;Sompech et al, 2012).…”