Synthesis of colloid silica coated with ceria nano-particles with the assistance of PVP

被引：11

作者：

Yu, Lei ^{[1
,2
,3
]}

Liu, Wei-Li ^{[1
,2
]}

Zhang, Ze-Fang ^{[1
,2
]}

Song, Zhi-Tang ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China

[2] Shanghai Xinanna Elect Techhol Co Ltd, Shanghai 201506, Peoples R China

[3] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

来源：

CHINESE CHEMICAL LETTERS | 2015年 / 26卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Colloid silica; Ceria-coated; Composite particles; PVP; CHEMICAL-MECHANICAL PLANARIZATION; PERFORMANCE; SLURRY; CMP;

D O I：

10.1016/j.cclet.2015.01.039

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this paper, a facile synthesis of 100 nm commercial colloid silica coated with nano-ceria core-shell composite particles by the precipitation method using ammonium cerium nitrate and urea as a precipitator with polyvinylpyrrolidone (PVP) as an assistant was briefly introduced. The results showed that the colloid silica was surrounded by nano-ceria uniformly forming the core-shell composite particles. The synthesis process was further discussed and optimized. It was found that the type and quantity of surfactant played a key role in the process. PVP connected the surface of colloid silica and that of the ceria precursor. (C) 2015 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.

引用

页码：700 / 704

页数：5

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