由纳米管自组装成花状,管状,球状Y_2O_3:Eu^(3+)的可控合成(英文)

The controlled synthesis of Y_2O_3:Eu^(3+) nanotubes self-assembled into flower aggregates,nanotubes,nanospheres

在没有任何模板剂的条件下,通过水热法将Y(OH)CO3纳米片自组装卷曲并经后期退火得到单分散的花状Y2O3.通过调节Y(CH3COO)3的浓度,我们得到了长约150 nm、直径40 nm左右且分散均匀的Y2O3纳米管及粒径在30nm左右的单分散Y2O3纳米球.Eu3+引入并没有影响其形貌.在紫外光的激发下,花状及球状的Y2O3:0.05Eu3+样品均显示强的红光发射,对应于Eu3+的特征峰.

Monodisperse Y2O3 flower aggregates were obtained by self-assembly of nanotubes through rolling up the Y(OH) CO3 nanosheets without any templates under hydrothermal condition followed by an annealing process.Through decreasing the concentration of Y(CH3 COO)3,homogeneous separated Y2O3 nanotubes with the length of(150 nm and the diameter of(40 nm and monodisperse(30 nm Y2O3 nanospheres were also selectively prepared.Doped Eu3+ ions don’t influence their morphologies.Under UV excitation,Y2O3 : 0.05Eu3+ flower-like and spherical samples show strong red emission,corresponding to the characteristic lines of Eu3+.