Preparation of Yttrium Oxide Nanoparticles by Low-temperature Sol-gel Method

Yttrium oxide powder has unique properties in magnetism electricity and light, and has broad application prospects in metallurgy, chemical industry and materials. This study systematically examine the effects of surfactant type and dosage, reaction temperature, and yttrium nitrate solution concentration on the particle size of yttrium oxide. The results showed that under the condition of an ice bath at 0, lactic acid and polyethylene glycol were added at a mass ratio of mA∶m(yttrium nitrate)=1∶500 to 0.5 mol/L yttrium nitrate solution, respectively, the pH was adjusted to neutral by using diluted 10-fold ammonia, and dried and calcined after aging at room temperature for 1 h. Yttrium oxide powders with D₅₀=12.63 μm could be obtained, and the morphology and size distribution were relatively homogeneous, with yttrium oxide averaging once the average particle size of yttrium oxide was 20 nm~30 nm.