Sacrificial Template Method for Fabrication of Submicrometer-Sized YPO4:Eu3+ Hierarchical Hollow Spheres

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• 作者：Lihui Zhang ; Guang Jia ; Hongpeng You ; Kai Liu ; Mei Yang ; Yanhua Song ; Yuhua Zheng ; Yeju Huang ; Ning Guo ; Hongjie Zhang
• 刊名：Inorganic Chemistry
• 出版年：2010
• 出版时间：April 5, 2010
• 年：2010
• 卷：49
• 期：7
• 页码：3305-3309
• 全文大小：791K
• 年卷期：v.49,no.7(April 5, 2010)
• ISSN：1520-510X

文摘

Large-scale good-quality submicrometer-sized YPO₄:Eu³⁺ hollow spheres were synthesized by utilizing the colloidal spheres of Y(OH)CO₃:Eu³⁺ as a sacrificial template and NH₄H₂PO₄ as a phosphorus source, for the first time. The whole process mainly consists of the hydrothermal reaction and acid erosion. The YPO₄:Eu³⁺@Y(OH)CO₃:Eu³⁺ core−shell structures were first obtained after the hydrothermal process. Then, the remaining Y(OH)CO₃:Eu³⁺ was removed by selective dissolution in a dilute nitric acid solution. The YPO₄:Eu³⁺ 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 YPO₄:Eu³⁺ hollow spheres may have potential applications in cell biology, drug release, and diagnosis, due to high chemical stability and luminescence functionality.