期刊文献+

共沉淀-超临界流体干燥法制备掺镧ZAO纳米粉 被引量:8

Preparation of ZAO Nano-powder Doped with La by Coprecipitation-Supercritical Fluid Drying Method
下载PDF
导出
摘要 采用共沉淀-超临界流体干燥法制备出掺La3+离子的ZAO(ZnO、Al2O3复合氧化物)纳米粉.采用XRD、TEM等检测手段研究了La3+的加入、超临界流体干燥处理工艺和晶化温度对粉末特性的影响.结果表明:在260℃×7.5MPa×0.5h的超临界流体条件下,得到平均粒度小于20nm,高的比表面积,近球形的ZAO粉体.有效的改善了粉体的团聚程度.且不需要晶化处理即为六方晶型的ZAO纳米粉. The method of coprecipitation-supercritical fluid drying(SCFD) has been used for synthesis of ZAO(ZnO. Al2O3 composite oxide) nano-poweders doped with La^3+. The effect of La doped, the process of supercritical fluid drying and crystallizing temperature on the characteristics of powders was studied using XRD and TEM. The results show that after process of supercritical fluid drying at 260℃×7.5 MPa×0.5 h,ZAO powders are obtained with size less than 20 nm,high surface area and better spherical grain. The degree of aggregation of nano-particles has been improved effectively. Without crystallizing,the crystal structure of ZAO nano-powders is hexahedron.
出处 《西安工业学院学报》 2006年第1期60-63,共4页 Journal of Xi'an Institute of Technology
关键词 共沉淀 超临界流体干燥 ZAO(ZnO-Al2O3两相)粉体 团聚 coprecipitation supercritical fluid drying ZAO(ZnO-Al2O3 two-phase ) powders aggregate
  • 相关文献

参考文献2

二级参考文献8

  • 1吉林大学化学系.催化作用基础[M].北京:科学出版社,1980.310.
  • 2张德恒,Thin Solid Films,1994年,251卷,151页
  • 3张德恒,Thin Solid Films,1994年,238卷,95页
  • 4张德恒,Thin Solid Films,1992年,213卷,109页
  • 5张德恒,Thin Solid Films
  • 6张德恒,半导体学报
  • 7王洪丽,于灵.一种抗干扰的H_2S传感器[J].郑州轻工业学院学报(自然科学版),1994,14(S1):125-127. 被引量:6
  • 8沈茹娟,贾殿赠,乔永民,王疆瑛.纳米ZnO的固相合成及其气敏特性[J].无机材料学报,2001,16(4):625-629. 被引量:40

共引文献30

同被引文献123

引证文献8

二级引证文献37

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部