서지주요정보
화염분무열분해법에 의한 세리아계 나노입자의 제조 = Preparation of ceria-based nanoparticles by flame spray pyrolysis
서명 / 저자 화염분무열분해법에 의한 세리아계 나노입자의 제조 = Preparation of ceria-based nanoparticles by flame spray pyrolysis / 류경옥.
저자명 류경옥 ; Ryu, Kyung-Ok
발행사항 [대전 : 한국과학기술원, 2003].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8014058

소장위치/청구기호

학술문화관(문화관) 보존서고

MCBE 03009

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초록정보

The preparation of ceria-based nanoparticles by the flame spray pyrolysis was investigated to develop a new economical preparation method by gas phase reaction. Ceria, gadolinium doped ceria, and ceria doped $TiO_{2}$ nanoparticles were prepared by the disintegration of primary particles in LPG flame. Droplets were thermally converted to primary particles in high temperature flame and then the primary particles were disintegrated because of gas coming off from the decomposition of the precursor. Primary particles were more easily disintegrated as flame temperature increased. The as-prepared particles were under 20 nm in diameter and had polyhedral shape. They were found to be in good crystallinity without post-treatment. For preparation of gadolinium doped ceria, the effect of gadolinium doping concentration on magnitude of ion conductivity was investigated. The highest conductivity was found to be $1.01×10^{-2} S cm^{-1}$ at 600$^\circ$C for $Ce_{0.75}Gd_{0.25}O_{1.875}$ which is 30% higher than that of the same composition particle prepared by hydrothermal method. Photocatalytic activity of ceria doped $TiO_{2}$ nanoparticles is higher than that of pure $TiO_{2}$ in visible light region and UV region.

서지기타정보

서지기타정보
청구기호 {MCBE 03009
형태사항 vi, 58 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Kyung-Ok Ryu
지도교수의 한글표기 : 박승빈
지도교수의 영문표기 : Seung-Bin Park
학위논문 학위논문(석사) - 한국과학기술원 : 생명화학공학과,
서지주기 참고문헌 : p. 55-58
주제 세리아
화염분무열분해법
나노 입자
ceria
doped ceria
flame spray pyrolysis
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