LaF3, CeF3, CeF3:Tb3+, and CeF3:Tb3+@LaF3 (core-shell) nanoplates:: Hydrothermal synthesis and luminescence properties

被引:138
作者
Li, Chunxia
Liu, Xiaorning
Yang, Piaoping
Zhang, Cuimiao
Lian, Hongzhou
Lin, Jun [1 ]
机构
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Appl Rare Earth Resources, Changchun 130022, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
关键词
D O I
10.1021/jp709941p
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
LaF3. CeF3, CeF3:Tb3+, and CeF3:Tb3+ @LaF3 (core-shell) 2D nanoplates have been successfully synthesized by a facile and effective hydrothermal process. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), and photoluminescence (PL) spectra as well as kinetic decays were used to characterize the samples. The experimental results indicate that the organic additive, trisodium citrate (Cit(3-)), as a shape modifier has the dynamic effect by adjusting the growth rate of different crystal facets, resulting in forming the anisotropic geometries of the final products. The possible formation mechanisms for different products have been presented. The CeF3, CeF3:Tb3+, and CeF3:Tb3+ @LaF3 (core/shell) nanoplates show characteristic emission of Ce3+ (5d-4f) and Tb3+ (f-f), respectively. By coating the LaF3 shell on the surface of the CeF3:Tb3+ core, the distance between the luminescent lanthanide ions is increased and the surface quenchers are decreased, thus reducing the nonradiative pathways. The luminescent intensity and lifetime of the CeF3:Tb3+ @LaF3 core/shell nanoplates are enhanced with respect to the bare CeF3:Tb3+ nanoplates.
引用
收藏
页码:2904 / 2910
页数:7
相关论文
共 41 条
[1]   Synthesis and fluorescence of neodymium-doped barium fluoride nanoparticles [J].
Bender, CM ;
Burlitch, JM ;
Barber, D ;
Pollock, C .
CHEMISTRY OF MATERIALS, 2000, 12 (07) :1969-1976
[2]  
Blasse G., 1994, LUMINESCENT MAT, DOI [10.1007/978-3-642-79017-1_1, DOI 10.1007/978-3-642-79017-1_1]
[3]   QUANTUM EFFICIENCY OF DIFFUSION LIMITED ENERGY-TRANSFER IN LA1-X-YCEXTBYPO4 [J].
BOURCET, JC ;
FONG, FK .
JOURNAL OF CHEMICAL PHYSICS, 1974, 60 (01) :34-39
[4]   Epitaxial synthesis of uniform cerium phosphate one-dimensional nanocable heterostructures with improved luminescence [J].
Bu, WB ;
Hua, Z ;
Chen, HR ;
Shi, JL .
JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (30) :14461-14464
[5]   Thermal aqueous solution approach for the synthesis of triangular and hexagonal gold nanoplates with three different size ranges [J].
Chu, HC ;
Kuo, CH ;
Huang, MH .
INORGANIC CHEMISTRY, 2006, 45 (02) :808-813
[6]   Selective synthesis of hexagonal and tetragonal dysprosium orthophosphate nanorods by a hydrothermal method [J].
Fang, YP ;
Xu, AW ;
Qin, AM ;
Yu, RJ .
CRYSTAL GROWTH & DESIGN, 2005, 5 (03) :1221-1225
[7]   Solventless synthesis of nickel sulfide nanorods and triangular nanoprisms [J].
Ghezelbash, A ;
Sigman, MB ;
Korgel, BA .
NANO LETTERS, 2004, 4 (04) :537-542
[8]   Blue, green, and red upconversion emission from lanthanide-doped LuPO4 and YbPO4 nanocrystals in a transparent colloidal solution [J].
Heer, S ;
Lehmann, O ;
Haase, M ;
Güdel, HU .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2003, 42 (27) :3179-3182
[9]   La(OH)3 and La2O3 nanobelts -: Synthesis and physical properties [J].
Hu, Chenguo ;
Liu, Hong ;
Dong, Wenting ;
Zhang, Yiyi ;
Bao, Gang ;
Lao, Changshi ;
Wang, Zhong L. .
ADVANCED MATERIALS, 2007, 19 (03) :470-+
[10]   Shape control of semiconductor and metal oxide nanocrystals through nonhydrolytic colloidal routes [J].
Jun, Young-wook ;
Choi, Jin-sil ;
Cheon, Jinwoo .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2006, 45 (21) :3414-3439