摘要
以C(eNO3)3·6H2O,Pr6O11为主要原料,利用低温燃烧-水热合成制备了具有纳米晶粒的Pr-CeO2红色稀土颜料。通过XRD,SEM,EDS,XPS对制备出的Pr-CeO2红色稀土颜料进行了测试分析。结果表明:Pr掺杂进入CeO2晶格,形成固溶体,为单一相的萤石型结构。Pr主要是以+3价的形式存在于Pr-CeO2固溶体中,该固溶体中未发现+4价的Pr。水热处理后的颜料粉体晶粒发育更完整,尺寸更均匀,平均尺寸为16.70nm,粉料的呈色性能比水热处理前有明显改善。
Pr-CeO2 Nano-crystalline red pigments are prepared from cerium （ Ⅲ ） nitrate hexahydrate and praseodymium oxide by Low-temperature Combustion Synthesis （LCS） combined with a Hydrothermal Method treatment. The pigments were characterized by XRD, SEM, EDS and XPS. The results show that the trivalent Pr enters CeO2 crystal lattice and forms Pr- CeO2 solid solution, which is based on the fluorite structure. It substitutes trivalant Pr for tetravalent Ce in CeO2 crystal and is compensated by oxygen vacancies. Pr-CeO2 pigments, with average grain size about 16.70 nm, prepared by this method have better crystal structure and red tonality compared with LCS method alone.
出处
《陶瓷学报》
CAS
2006年第1期25-28,共4页
Journal of Ceramics
