溶胶-反相微乳液体系制备粒径可控的纳米CeO<sub>2</sub>

摘要以环己烷/H₂O/CTAB/正丁醇形成的反相微乳液体系为反应介质，其中，水相为调节Ce（NO₃）₃溶液pH值形成的溶胶，研究了Ce（NO₃）₃浓度、溶胶和反相微乳液体系的温度、反相微乳液体系pH值对CeO₂粒径的影响，并用XRD、激光粒度仪对样品进行了表征。结果表明，可以在1~100 nm内制备出粒径可控的CeO₂颗粒。控制Ce（NO₃）₃浓度为1.2 mol/L、溶胶和反相微乳液体系的温度为25℃、反相微乳液体系pH值为8，可得到D₉₀粒径在25~45 nm的CeO₂颗粒。

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	华丽
	肖林久
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关键词：溶胶反相微乳液 CeO₂ 粒径可控

Abstract： The reverse microemulsion system formed by cyclohexane/H₂O/CTAB/n-butanol was used as the reaction medium. The aqueous phase was the sol formed by adjusting the pH of Ce(NO₃)₃ solution. The effect of concentration of Ce(NO₃)₃, temperature and pH of sol and the reverse microemulsion system on particle size of CeO₂was studied. The product was characterized by XRD and laser particle size analyzer. The results show that CeO₂ particles with controlled particle size can be prepared within 1~100 nm. When the concentration of Ce(NO₃)₃ was 1.2 mol/L, the temperature of the sol and reverse microemulsion system was 25℃, and the pH of the reverse microemulsion system was 8, CeO₂ particles having a D₉₀ particle size of 25~45 nm can be obtained.

Keywords： sol； reverse microemulsion； CeO₂； controlled particle size

Received 2018-11-12;

Corresponding Authors: 肖林久,E-mail:x109@163.com。 Email: x109@163.com

About author: 华丽(1993-),女,硕士研究生,现从事稀土发光材料方面的研究。

引用本文:

华丽, 肖林久, 李文泽, 郭建.溶胶-反相微乳液体系制备粒径可控的纳米CeO₂[J]. 化学工业与工程, 2019,36(5): 58-63

Hua Li, Xiao Linjiu, Li Wenze, Guo Jian.Preparation of Size Controllable CeO₂ Nanoparticle by Sol-Reverse Microemulsion System[J]. Chemcial Industry and Engineering, 2019,36(5): 58-63

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