Citation: LUAN Dan, SUN Ping, LIU Gui-Xia, WANG Jin-Xian, DONG Xiang-Ting, YU Wen-Sheng. Preparation and Properties of Ag@YF₃:Eu³⁺ Core-Shell Structural Nanomaterials[J]. Chinese Journal of Inorganic Chemistry, ;2013, 29(3): 474-478. doi: 10.3969/j.issn.1001-4861.2013.00.085 shu

Preparation and Properties of Ag@YF₃:Eu³⁺ Core-Shell Structural Nanomaterials

1.
School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun 130022, China

Received Date: 10 September 2012
Available Online: 26 October 2012
Fund Project: 国家自然科学基金(No.51072026,50972020)资助项目。 (No.51072026,50972020)

Ag nanoparticles were successfully synthesized with a high yield by a polyol process, and the uniform spherical Ag@YF₃:Eu³⁺ core-shell structural nanomaterials were fabricated via a facile direct precipitation method, then the structure and properties were characterized. XRD patterns show that the orthogonal phase YF₃:Eu³⁺ nanocrystals are coated on the surface of Ag cores. TEM images indicate that the obtained composites have obvious core-shell structure and uniform spherical morphology, the diameter of the Ag core is of 80～100 nm, the size of the Ag@YF₃:Eu³⁺ composite is about 150～180 nm, the surface is rough and the coating is complete. Electron diffraction pattern indicates that the samples are polycrystalline. The photoluminescence spectra indicate that the core-shell structural composites have good luminescence, the strong emission peak is near 593 nm corresponding to ⁵D₀→⁷F₁ magnetic dipole transition of Eu³⁺, the fluorescent intensity is weaker but the lifetime is stronger than that of the pure YF₃:Eu³⁺, which indicates that the fluorescent of YF₃:Eu³⁺ is quenched by Ag cores.
- direct precipitation method;Ag;YF₃:Eu³⁺;core-shell structure;luminescent property
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Preparation and Properties of Ag@YF3:Eu3+ Core-Shell Structural Nanomaterials

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通讯作者: 陈斌, bchen63@163.com

Preparation and Properties of Ag@YF₃:Eu³⁺ Core-Shell Structural Nanomaterials