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J. Korean Ceram. Soc. > Volume 41(6); 2004 > Article
Journal of the Korean Ceramic Society 2004;41(6): 471.
doi: https://doi.org/10.4191/kcers.2004.41.6.471
고온 소성용 TiO2-SiO2계 광촉매의 제조 및 특성
이명진, 전애경1, 이지영1, 윤기현
연세대학교 세라믹공학과
1선진화학(주) 연구
Preparation of TiO2-SiO2 Sol and Its Photo-Catalyst Properties for High Temperatures
TiO$_2$, SiO$_2$, and PBA(Pseudo Boehemite Alumina) sol were prepared by sol-gel process. The particle sizes of these sol exhibited uniform 10∼30 nm. As the amount of SiO$_2$ sol increased, the temperature of phase transition (from anatase phase to rutile phase) was raised temperature than $600^{circ}C$, which attributed to the enhanced photocatalyst properties. Also, the anatase phase was obtained with very small amount of the rutile phase from the addition of SiO$_2$ (10∼30 wt%) at annealing temperature of 120$0^{circ}C$. The specimen with 20 wt% SiO$_2$ sol exhibited the maximum photocatalyst properties. But, the specimen with PBA sol did not affect photocatalytic activity due to the presence of rutile phase.
Key words: Photocatalyst, $TiO_2$ sol, Composite sol
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