...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Key Engineering Materials >Coloring Mechanism of Pr-CeO_2 Nano-crystalline Red Lanthanide Pigments Prepared by Low-temperature Combustion Synthesis
【24h】

Coloring Mechanism of Pr-CeO_2 Nano-crystalline Red Lanthanide Pigments Prepared by Low-temperature Combustion Synthesis

机译：低温燃烧合成法制备的Pr-CeO_2纳米晶红镧系色素的着色机理

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Pr-CeO_2 nano-crystalline red lanthanide pigments were prepared from cerium (III) nitrate hex-ahydrate and praseodymium oxide by low-temperature combustion synthesis. Its ignited temperature was approximately 250℃. The prepared pigments were characterized by DSC, XRD, SEM and XPS. The results showed that the crystallite size decreases with increasing Pr mol concentration. The valence of praseodymium in the pigments and its coloring mechanism were also investigated. The trivalent Pr entered into CeO_2 crystal lattice and formed Pr-CeO_2 solid solution, which was based on the fluorite structure. It substituted trivalent Pr for tetravalent Ce in CeO_2 crystal and was compensated by oxygen vacancies, which caused the distortion and the defection of the crystal lattice. Therefore the pigments can absorb the light with the wavelength of approximate 600nm and present the red tonality.
机译：由硝酸铈（III）六水合物和氧化oxide通过低温燃烧合成法制备了Pr-CeO_2纳米晶红色镧系颜料。点燃温度约为250℃。通过DSC，XRD，SEM和XPS对制备的颜料进行了表征。结果表明，随着Pr mol浓度的增加，晶粒尺寸减小。还研究了in在颜料中的化合价及其着色机理。三价Pr进入CeO_2晶格，形成基于萤石结构的Pr-CeO_2固溶体。它用三价Pr代替CeO_2晶体中的四价Ce，并被氧空位补偿，这引起了晶格的变形和缺陷。因此，颜料可以吸收大约600nm波长的光，并呈现红色调。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号