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Transactions of the Indian Institute of Metals

, Volume 70, Issue 10, pp 2667–2672 | Cite as

Nanosized CeO2 Particles Obtained by Mechanical Solid-State Reaction Combined with Sol–Gel Method

Technical Paper
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Abstract

The synthesis of cerium dioxide (CeO2) nanopowders via mechanical solid-state reaction combined with sol–gel method was studied. Cerium(III) nitrate hexahydrate, dihydrate oxalate, NH4F, along with stearic acid or glycol, were mechanically milled. Calcination of the as-milled mixtures in air at 400 °C resulted in the formation of CeO2 nanoparticles. The dispersity and uniformity in particle size and morphology were greatly improved by both physical and chemical effects of the stearic acid or glycol brought in: on one hand, they had the space steric hindrance effect; on the other hand, they might act as complexing agents, letting the whole process being carried out in highly homogeneous dispersed circumstance. The CeO2 particles showed best dispersity and uniformity in particle size and morphology when the content of stearic acid was 20 g, along with 10 wt% NH4F. As-obtained, near spherical CeO2 particles were controlled to the size of 30–60 nm.

Keywords

CeO2 nanoparticles Mechanical solid-state reaction Sol–gel method Stearic acid Glycol 

Notes

Acknowledgement

The authors are grateful for the Project 2014GZ0090 supported by the Science and Technology Support Program in Sichuan.

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Copyright information

© The Indian Institute of Metals - IIM 2017

Authors and Affiliations

  1. 1.College of Material Science and EngineeringSichuan UniversityChengduChina

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