| 학회 |
한국공업화학회 |
| 학술대회 |
2017년 가을 (11/08 ~ 11/10, 부산 벡스코(BEXCO)) |
| 권호 |
21권 2호 |
| 발표분야 |
정밀화학_포스터 |
| 제목 |
Facile synthesis of silica-titania nano core shell structured particles with high photocatalytic activity |
| 초록 |
We have studied the synthesis and applications of core-shell structured silica/titania particles starting from water glass (alkaline silicate) as silica precursor and titanium oxydichloride (TiOCl2) as titania precursor in economical point of view. First nano-sized silica particles with BET400 m2/g were prepared by the neutralization of water glass with acid and followed by reacted with TiOCl2 to give silica/titania core-shell structured particles. The prepared core-shell SiO2/TiO2 were calcinated to transfer amorphous TiO2 shell to anatase crystalline TiO2 shell between 500 and 800 ℃. Especially the crystalline phase of core-shell SiO2/TiO2 particles calcinated at 700 ℃ for 2h was the best one and its photocatalytic activity was higher than that of P25 for the degradation of methylene blue dye from aqueous solution under UV light irradiation. |
| 저자 |
정자윤1, 홍창섭2, 유복렬1
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| 소속 |
1한국과학기술(연), 2고려대 |
| 키워드 |
silica-titania nano core shell |
| E-Mail |
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