| 학회 | 한국화학공학회 |
| 학술대회 | 2009년 가을 (10/22 ~ 10/23, 일산 KINTEX) |
| 권호 | 15권 2호, p.1727 |
| 발표분야 | 에너지 |
| 제목 | Fabrication of TiO2 nanotube by anodization |
| 초록 | TiO2 nanotube preparation method has been established for the application for a bio-sensor, a solar cell and a PEC (photoelectrochemical cell), recently. On the other hand, the understandings for the mechanism of the TiO2 nanotube growth and the properties of one-dimensional TiO2 array are not known. Anatase TiO2 nanotubes formed by anodic oxidation on a pure titanium substrate which controllable good uniformity at room temperature in [ F- ] containing electrolyte.NH4F or HF was used as a fluoride ion source and ethylene glycol and H2O was used as solvent. A mechanism of the formation of the TiO2 nanotubes was studied based on the observation of the surface morphology (top-view and cross-sectional view) using FE-SEM, depth profiles by Auger analysis and the analysis of the current densitytime curves between different concentration of electrolyte containing (0.2wt%~0.5wt%).The crystal structures of the TiO2 nanotubes were confirmed using X-ray diffraction (XRD). The prepared TiO2 nanotubes were annealed at temperature ranges from 250℃ to 450℃ in dry oxygen ambient for an hour and the structural changes were monitored.From the depth profiles, the mechanism of TiO2 nanotube growth is discussed. |
| 저자 | 이고운, 조용진, 주오심, 정광덕 |
| 소속 | 한국과학기술(연) |
| 키워드 | Titanium dioxide nanotubes; Anodizing; Anatase |
| 원문파일 | 초록 보기 |
