One-step synthesis of luminescent nanoparticles of complex oxide, strontium aluminate
One-step synthesis of luminescent nanoparticles of complex oxide, strontium aluminate
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DOI：
10.1111/j.1551-2916.2007.01689.x
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发表时间：
2007-07-01
影响因子：
3.9
通讯作者：
Xu, Chao-Nan
中科院分区：
文献类型：
--
作者：
Li, Chengzhou;Imai, Yusuke;Xu, Chao-Nan
采用喷雾热分解法制备了SrAl 2 O 4：Eu（SAO）纳米粒子。非团聚的发光SAO纳米粒子，具有球形的尺寸为10-30 nm，在一个单一的步骤中实现，而只有亚微米尺寸的SAO颗粒从常规的超声波热解的金属硝酸盐获得。在没有任何后退火过程的情况下，观察到所制备的SAO纳米颗粒表现出强烈的光致发光，这与亚微米尺寸的SAO颗粒的光致发光相当。纳米粒子的形成机制进行了讨论。
An organic aqueous solution of metal acetylacetonate precursors was subjected to spray pyrolysis in order to fabricate SrAl2O4:Eu (SAO) nanoparticles. Non-agglomerated luminescent SAO nanoparticles, having a spherical shape with a size of 10-30 nm, were achieved in a single step, while only submicrometer-sized SAO particles were obtained from the conventional ultrasonic pyrolysis of the metal nitrates. Without any post-annealing process, the as-prepared SAO nanoparticles were observed to exhibit a strong photoluminescence, which is comparable with that of the submicrometer-sized SAO particles. A mechanism for the formation of the nanoparticles is also discussed.