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Synthesis and Photoluminescence Characterization of Ellipsoidal Lanthanide Orthophosphate Nanoparticles
Author(s) -
Lu Zhouguang,
Gao Rui,
Li Wei,
Huang Boyun
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2010.04116.x
Subject(s) - lanthanide , photoluminescence , ionic radius , transmission electron microscopy , ethylenediamine , hydrothermal circulation , hydrothermal synthesis , materials science , citric acid , nanoparticle , nanocrystal , crystallography , nuclear chemistry , inorganic chemistry , chemistry , analytical chemistry (journal) , nanotechnology , ion , chemical engineering , organic chemistry , optoelectronics , engineering
This paper describes a general hydrothermal route for the synthesis of a series of rare‐earth orthophosphates, LnPO 4 · x H 2 O (Ln=La, Y, Ce, Sm, Gd, Tb, Dy, Er, and Yb), with a mean diameter of ∼100 nm. The procedure involves the formation of homogeneous, transparent, metal–citrate–ethylenediamine tetraacetic acid (EDTA) gel precursors using both citric acid and EDTA as the complexing agents, followed by hydrothermal mineralization to yield the final LnPO 4 · x H 2 O nanocrystallites. Techniques of X‐ray diffraction, transmission electron microscopy, and high‐resolution transmission electron microscope have been used to characterize the as‐synthesized LnPO 4 · x H 2 O nanocrystals. Furthermore, photoluminescence (PL) characterization of the Eu 3+ ‐doped LnPO 4 · x H 2 O nanocrystals was carried out. The results indicate that the PL property changes considerably with the ionic radii of the rare‐earth elements.