| 학회 |
한국화학공학회 |
| 학술대회 |
2006년 가을 (10/27 ~ 10/28, 고려대학교) |
| 권호 |
12권 2호, p.2362 |
| 발표분야 |
재료 |
| 제목 |
Controlled Synthesis of Spherical or Rod-like Titania |
| 초록 |
Titania particles are commonly used as ultra-white pigments because of their high refractive index and no absorption at visible. As well, they have taken lots of attractions due to the light localization within their random media which is potentially useful for random lasing. Therefore, it is great challenge to synthesize uniform titania paricles for controlling their optical properties more precisely. In general, for monodispersity of particles, it is crucial to separate seed formation and growth stage by controlling the reactivity of precursor. Recently, several research groups have suggested synthetic routes for monodisperse spheres by using less reactive precursors or stabilizers. In this presentation, we demonstrate that monodisperse titania spheres are successfully synthesized by controlled hydrolysis of EG-modified titania precursors with surfactant and their colloidal clusters were also produced by emulsion encapsulation and shrinkage technique. In addition, miron-sized titania rods were synthesized under different reaction condition, which were then annealed for forming crystalline titania rods of anatase or rutile phase. |
| 저자 |
유형균1, 이기라2, 강지환1, 은태희1, David J. Pine3, 양승만1
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| 소속 |
1한국과학기술원 생명화학공학과 / 광자유체집적소자 창의연구단, 2한국기초과학지원(연), 3뉴욕대 |
| 키워드 |
titania; monodisperse; sphere; rod
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| E-Mail |
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| 원문파일 |
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