摘要
为改善纳米CeO2在水介质中的稳定分散,在分析纳米CeO2各种性质的基础上,研究了介质pH值、无机电解质、阴离子表面活性剂对纳米CeO2表面电性的影响,并对分散机理进行了分析。结果表明:添加无机电解质可以显著降低碱性水介质中纳米CeO2的ζ电位,对于改善纳米CeO2在碱性区域内的稳定性有较好的效果。
In order to achieve a stable dispersion of nanometer ceria in water,the influences of pH value of medium, inorganic electrolyte, anionic surfactants on the surface electrical properties of nanometer ceria were investigated alter an analysis on various properties of eeria nanopowder, and the relevant dispersion mechanism was also discussed. It was shown that, when different inorganic electrolytes was added, the ζ potential of nanometer ceria would be remarkably decreased and an excellent dispersion system would be obtained in alkalescent aqueous medium.
出处
《中国粉体技术》
CAS
2008年第4期23-26,共4页
China Powder Science and Technology
基金
科技部院所基金项目
编号:2005-48A
关键词
纳米CEO2
水介质
表面电性
Ζ电位
nanometerceria
aqueous medium
surface electricpropertiy
potential
