Synthesis of SmOHCO_3 micro/nano particles from the coupling route of homogeneous precipitation with microemulsion  

作　　者：朱文庆 瞿芳 陈浩军 李卓 刘斌 

机构地区：[1]College of Environmental and Chemical Engineering, Xi'an Polytechnic University

出　　处：《Journal of Rare Earths》2014年第6期553-557,共5页稀土学报（英文版）

基　　金：Project supported by the grant from Scientific and Technological Projects in Shaanxi Province(2011K07-23);Shaanxi Provincial Department of Education Special Research Projects(11JK0566)

摘　　要：SmOHCO3micro/nano particles were prepared in water/oil （W/O） reverse microemulsion composed of cetyltrimethyl ammonium bromide （CTAB）, n-octane, n-butanol, Sm（NO3）3·6H2O and urea aqueous solution by the coupling route of homogeneous precipitation with microemulsion. The nanoparticles were characterized and analyzed by X-ray powder diffraction （XRD）, thermal gravimetric and differential thermal gravimetric analysis （TG-DTG）, Fourier transform infrared absorption spectra （FT-IR） and scan-ning electron microscope （SEM）. The results showed that the phase SmOHCO3 micro/nano particles was in agreement with pure or-thorhombic phase. The different morphologies of SmOHCO3 micro/nano particles with good monodispersity and size were obtained by regulating the reaction temperature and reaction time. Possible formation mechanisms of the morphological structure of SmO-HCO3 were proposed and discussed.SmOHCO3micro/nano particles were prepared in water/oil （W/O） reverse microemulsion composed of cetyltrimethyl ammonium bromide （CTAB）, n-octane, n-butanol, Sm（NO3）3·6H2O and urea aqueous solution by the coupling route of homogeneous precipitation with microemulsion. The nanoparticles were characterized and analyzed by X-ray powder diffraction （XRD）, thermal gravimetric and differential thermal gravimetric analysis （TG-DTG）, Fourier transform infrared absorption spectra （FT-IR） and scan-ning electron microscope （SEM）. The results showed that the phase SmOHCO3 micro/nano particles was in agreement with pure or-thorhombic phase. The different morphologies of SmOHCO3 micro/nano particles with good monodispersity and size were obtained by regulating the reaction temperature and reaction time. Possible formation mechanisms of the morphological structure of SmO-HCO3 were proposed and discussed.

关 键 词：MICRO-EMULSION homogeneous precipitation SmOHCO3 rare earths 

分 类 号：TB383.1[一般工业技术—材料科学与工程]