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ISSN : 1225-0562(Print)
ISSN : 2287-7258(Online)
Korean Journal of Materials Research Vol.30 No.7 pp.376-382
DOI : https://doi.org/10.3740/MRSK.2020.30.7.376

Synthesis and Dispersion of Ceria(CeO2) Nanoparticles by Solvothermal Process

Tae Seop Lim1,Ji Young Ock1,Yeon Bin Choi1,Bong Gu Kim1,Jeong Hun Son1,Yeon Gil Jung1†
1School of Nano & Advanced Materials Eng., Changwon National Univ., Changwon, Republic of Korea
Corresponding author
E-Mail : jungyg@changwon.ac.kr (Y.-G. Jung, Changwon Nat’l Univ.)

Abstract

CeO2 nanoparticles, employed in a lot of fields due to their excellent oxidation and reduction properties, are synthesized through a solvothermal process, and a high specific surface area is shown by controlling, among various process parameters in the solvothermal process, the type of solvent. The synthesized CeO2 nanoparticles are about 11~13 nm in the crystallite size and their specific surface area is about 65.38~84.65 m2/g, depending on the amount of ethanol contained in the solvent for the solvothermal process; all synthesized CeO2 nanoparticles shows a fluorite structure. The dispersibility and microstructure of the synthesized CeO2 nanoparticles are investigated according to the species of dispersant and the pH value of the solution; an improvement in dispersibility is shown with the addition of dispersants and control of the pH. Various dispersing properties appear according to the dispersant species and pH in the solution with the synthesized CeO2 nanoparticles, indicating that improved dispersing properties in the synthesized CeO2 nanoparticles can be secured by applying dispersant and pH control simultaneously.

용매열 공정을 이용한 세리아(CeO2) 나노분말의 합성 및 분산거동

임태섭1,옥지영1,최연빈1,김봉구1,손정훈1,정연길1†
1창원대학교 신소재공학과

초록

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