| 학회 |
한국화학공학회 |
| 학술대회 |
2010년 봄 (04/22 ~ 04/23, 대구 EXCO) |
| 권호 |
16권 1호, p.236 |
| 발표분야 |
미립자공학 |
| 제목 |
Controllable Dispersibility of Surface Modified CeO2 Synthesized by Continuous Supercritical Hydrothermal Synthesis |
| 초록 |
The surface-modified CeO2 nanoparticles has been synthesized in continuous flow reactor using supercritical water and methanol at 400 oC, 30 MPa and residence time ~40 s with addition of surface modifier. In this study, we use PEG600, PEG350 and decanoic acid as surface modifier. The results of SEM and TEM pictures showed that the addition of surface modifier changed the size and morphology of the obtained nanoparticles. X-ray diffraction spectra revealed that the synthesized nanoparticles were in CeO2 phase, while Fourier transform infrared spectroscopy and thermal gravimetric analysis indicated that functional group of surface modifier was chemically bonded onto the surface of the nanoparticles. The UV dispersability test for 30 days showed that surface modified CeO2 have good dispersability in common solvent like water, oil, or ethylene glycol. This result indicated that CeO2 particles can be dispersed in common solvent by attaching suitable functional group of surface-modifier to the surface of nanoparticles. |
| 저자 |
Agung Nugroho, 밤방, 김재훈, 김재덕
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| 소속 |
KIST |
| 키워드 |
Cerium oxide; Surface modification; Supercritical hydrothermal synthesis; Nanoparticles
|
| E-Mail |
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| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
