Yttrium Oxide Nanoparticles
Yttrium oxide (Y2O3) nanoparticles are one of the most important heavy rare earth metal oxide nanoparticles. The free energy of oxide formation from elemental yttrium is the highest known value. Yttrium is a fairly abundant material. Its abundance is comparable to copper, cobalt, zinc. Y2O3 nanoparticles have attracted attention owing to their excellent properties such as high refractory performance, chemical stability, mechanical properties, and good thermal conductivity. The melting point of Y2O3 nanoparticles is around 2450°C while the thermal conductivity is about 33 W/mK. It is a suitable material for photonic waveguide due to its high bandgap (5.72 eV), with a very high refractive index (2) and a wide transmission range (280– 8000 nm). Nanoscale Y2O3 powders are used in;
- Nuclear ceramics,
- Strengthened steels,
- Electronic devices due to their superior chemical and thermal properties.
These nanoparticles are also used as neuroprotective agents with direct antioxidant activity.