Synthesis and Characteristics of Sm₂O₃ and Nd₂O₃ Nanoparticles

Abstract

A novel method has been used to synthesize rare earth oxide nanoparticles. Sm and Nd hydride nanoparticles were first produced by a hydrogen plasma−metal reaction. The evaporation rate of Sm is about three times that of Nd. Nd2O3 nanoparticles were then directly synthesized from the passivation of Nd hydride nanoparticles and Sm2O3 nanoparticles with a pure cubic structure from the heat treatment of Sm3H7 nanoparticles at 673 K in air. The morphology and crystal structure of the prepared powders were investigated by transmission electron microscopy, X-ray diffraction, and Fourier transform infrared spectroscopy. Both the Sm2O3 and the Nd2O3 nanoparticles were spherical in shape, with a mean particle diameter of about 40 and 17 nm, respectively. The particle size of the Sm2O3 nanoparticles changed very little after the sintering of the Sm hydride nanoparticles at 473 and 673 K.

Synthesis and characterization of Sm(OH)3 and Sm2O3 nanoroll sticks

“…Facial solution-based synthetic methods include hydrothermal [13][14][15], precipitation [11,16], solgel [18], and template [19] methods. Many different morphologies have been synthesized and reported, including nanorods [11,[15][16][17]20], nanodisks [18], nanowires [21,22], submicrospindles [23], nanoparticles [24], and nanoplates [20,21]. Yu [14].…”

Nd2O3 Nanoparticles Modified with a Silane‐Coupling Agent as a Liquid Laser Medium

“…The synthesis of lanthanide oxide nanoparticles can be achieved by a number of different processes, including microemulsion techniques [15], hydrogen plasma-metal reactions [16], hydrothermal processes [17], polyol methods [18], and sol-gel techniques [19]. In this work, the Nd 2 O 3 nanoparticles were synthesized by a solution-combustion method similar to that used in previous studies.…”

Electrochemical Synthesis of Rare Earth Ceramic Oxide Coatings

“…There is a long list of processing techniques for producing rare earth oxides including spray hydrolysis, pulsed laser deposition, chemical vapor deposition, solid state reactions, sol-gel method, and melt infiltration [19][20][21][22][23][24]. However, electrochemical synthesis has not been used extensively to deposit rare earth oxide coatings.…”