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Y2O3:Tb3+ hollow microspheres have been successfully prepared on a large scale with polystyrene microspheres as templates followed by subsequent calcination. All X-ray diffraction peaks can be indexed to the pure cubic phase of Y2O3. Transmission electron microscopy and scanning electron microscopy images indicate that the average size of the hollow spheres is ca.1.3 μm and the thickness of the shells...
YPO>sub>4:Eu3+ hollow microspheres were synthesised by using the spheres of PS/Y(OH)CO3:Eu3+ as a precursor. The whole process mainly consists of the hydrothermal reaction and calcination. The YPO4:Eu3+ hollow spheres were characterised by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and photoluminescence. The formation mechanism was also investigated. The...
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