| 학회 |
한국화학공학회 |
| 학술대회 |
2011년 가을 (10/26 ~ 10/28, 송도컨벤시아) |
| 권호 |
17권 2호, p.1379 |
| 발표분야 |
미립자공학 |
| 제목 |
Evolution of Monodisperse Magnetite Hollow Spheres through Solvothermal Process for Medical Applications |
| 초록 |
We prepared monodisperse Fe3O4 nanospheres with hollow interior structures and high saturation magnetization of 81.0 emu g-1 through a process using FeCl36H2O and ammonium acetate as the reactants in an ethylene glycol solution. After 2 h, only brown precipitation was observed with undefined shape. After 4 h, nano spherical particles started to appear from the aggregation of that brown precipitation. For a heating time of 10 h or longer, the obtained samples were composed of uniform nanospheres. The microsphere was then followed by a solid core evacuation, and a hollowing effect is observed for those with a longer reaction time of 12 h. After 24 h, the hollow spheres were well developed. We studied systematically the time-dependent shape evolution by SEM and TEM observations and also by XRD, FT-IR spectroscopy measurements to understand the particle formation mechanism. |
| 저자 |
Nguyen The Dung, 이용석, 김교선
|
| 소속 |
강원대 |
| 키워드 |
iron oxide nanoparticles; nanoparticle preparation; hollow structure; solvothermal
|
| E-Mail |
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| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
