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Synthesis of Er 3+ Doped Y 2 O 3 Nanophosphors
Author(s) -
Venkatachalam Nallusamy,
Saito Yu,
Soga Kohei
Publication year - 2009
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.1551-2916.2009.02986.x
Subject(s) - calcination , yttrium , hydrate , nanoparticle , amorphous solid , particle size , hydroxide , materials science , nuclear chemistry , fourier transform infrared spectroscopy , coprecipitation , inorganic chemistry , precipitation , mineralogy , crystallography , chemistry , chemical engineering , oxide , catalysis , nanotechnology , organic chemistry , physics , meteorology , engineering , metallurgy
The synthesis and characterization of yttrium hydroxyl carbonate (Y(OH)CO 3 2− ) and yttrium nitrate hydroxide hydrate (Y(OH)NO 3 H 2 O) precursor materials as well as Y 2 O 3 nanoparticles are reported. The resultant precursor particle size is about 10–12 nm with a narrow size distribution by the enzymatic decomposition method, whereas the particle size was smaller than those acquired by the homogeneous and alkali precipitation methods. The formation of Y(OH)CO 3 2− and Y(OH)NO 3 H 2 O species was also evident from the fourier‐transform infrared spectrometry (FT‐IR) analysis. Precipitated Y(OH)CO 3 2− precursors have an amorphous nature whereas Y(OH)NO 3 H 2 O precursors have a crystalline nature, which was manifested from the XRD analysis. Moreover, precipitated Y(OH)NO 3 H 2 O precursors were found in the agglomerated form and Y(OH)CO 3 2− was established in the monodispersed form, as determined from the FE‐SEM, TEM and DLS measurements. It was demonstrated that calcination of precursor materials at 900°C eventually removed the inorganic anions from the precursors and consequently produced crystalline Y 2 O 3 nanoparticles, which was evident from the XRD and FT‐IR analysis. The EDS analysis confirms Er 3+ doping in the Y 2 O 3 nanoparticles. The morphology and the size of the Y 2 O 3 nanoparticles are almost unchanged before and after the calcination.