Citation: Lei Yu, Wei-Li Liu, Ze-Fang Zhang, Zhi-Tang Song. Synthesis of colloid silica coated with ceria nano-particles with the assistance of PVP[J]. Chinese Chemical Letters, ;2015, 26(6): 700-704. doi: 10.1016/j.cclet.2015.01.039 shu

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

Lei Yu ^a,b,c ,
Wei-Li Liu ^a,b,, ,
Ze-Fang Zhang ^a,b ,
Zhi-Tang Song ^a,b

1.
a State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China;
b Shanghai Xinanna Electronic Technology Co.
b Shanghai Xinanna Electronic Technology Co., Ltd., Shanghai 201506, China;
3.
c Graduate School of the Chinese Academy of Sciences, Beijing 100049, China

Corresponding author: Wei-Li Liu,
Received Date: 24 November 2014
Available Online: 19 January 2015
Fund Project: The work is supported by National Integrate Circuit Research Program of China (Nos. 2011ZX02704-002, 2009ZX02030-001) (Nos. 2011ZX02704-002, 2009ZX02030-001) National Natural Science Foundation of China (No. 51205387) (No. 51205387)

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.
- Colloid silica,
- Ceria-coated,
- Composite particles,
- PVP
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