牺牲模板法制备亚微米级 YPO(4):Eu(3+) 分级空心球。
Sacrificial template method for fabrication of submicrometer-sized YPO(4):Eu(3+) hierarchical hollow spheres.
机构信息
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 and Graduate University of the Chinese Academy of Sciences, Beijing 100049, PR China.
出版信息
Inorg Chem. 2010 Apr 5;49(7):3305-9. doi: 10.1021/ic9022739.
Large-scale good-quality submicrometer-sized YPO(4):Eu(3+) hollow spheres were synthesized by utilizing the colloidal spheres of Y(OH)CO(3):Eu(3+) as a sacrificial template and NH(4)H(2)PO(4) as a phosphorus source, for the first time. The whole process mainly consists of the hydrothermal reaction and acid erosion. The YPO(4):Eu(3+)@Y(OH)CO(3):Eu(3+) core-shell structures were first obtained after the hydrothermal process. Then, the remaining Y(OH)CO(3):Eu(3+) was removed by selective dissolution in a dilute nitric acid solution. The YPO(4):Eu(3+) hollow spheres were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and photoluminescence (PL). The formation mechanism was also investigated. The obtained YPO(4):Eu(3+) hollow spheres may have potential applications in cell biology, drug release, and diagnosis, due to high chemical stability and luminescence functionality.
首次利用 Y(OH)CO3:Eu(3+)胶体球作为牺牲模板和 NH4H2PO4 作为磷源，合成了大规模高质量的亚微米级 YPO4:Eu(3+)空心球。整个过程主要包括水热反应和酸蚀。水热过程后首先得到 YPO4:Eu(3+)@Y(OH)CO3:Eu(3+)核壳结构。然后，通过在稀硝酸溶液中选择性溶解除去剩余的 Y(OH)CO3:Eu(3+)。YPO4:Eu(3+)空心球通过 X 射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)和光致发光(PL)进行了表征。还研究了形成机制。由于具有高化学稳定性和发光功能，所得的 YPO4:Eu(3+)空心球可能在细胞生物学、药物释放和诊断中有潜在的应用。
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