Synthesis of Dispersed Y₂O₃ Nanopowder from Yttrium Stearate

Abstract:

Fine yttrium stearate powder was produced at a relatively low temperature using yttrium nitrate hexahydrate, ammonia and stearic acid as the raw materials. Dispersed Y₂O₃ nanopowder was synthesized by calcining the yttrium stearate. The formation mechanism of the precursor and the Y₂O₃ nanopowder was studied by means of XRD, TG-DTA, FT-IR, BET, FE-SEM and HR-TEM. Pure and dispersed Y₂O₃ nanopowder with an average particle size of 30 nm was produced by calcining the precursor at 600 °C. The particle size increases to about 60 nm with the increase of the calcination temperature to 1000 °C. In the preparation of Y₂O₃ from yttrium stearate, no water medium is involved, thus capillarity force and bridging of adjacent particles by hydrogen bonds can be avoided, resulting in good dispersion of the particles. The dispersed Y₂O₃ nanopowder prepared in this work has potential application in phosphors and transparent ceramic materials.

• Periodical: Key Engineering Materials (Volume 544)
• Pages: 3-7
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.544.3
• Online since: March 2013
• Authors: Jin Sheng Li, Xu Dong Sun, Shao Hong Liu, Di Huo, Xiao Dong Li, Ji Guang Li, Qi Zhu, Mu Zhang
• Keywords: Loose Powder, Stearic Acid, Y₂O₃, Yttrium Stearate

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