| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 봄 (04/14 ~ 04/15, 전경련회관) |
| 권호 | 30권 1호, p.86 |
| 발표분야 | 유ㆍ무기 나노섬유 소재 |
| 제목 | Inorganic Nanofibers |
| 초록 | Nanostructural materials such as nanowires, nanofibers, nanowhiskers and nanorods have gained considerable attention in recent time owing to their potential technological applications. They can be useful as building blocks in bottom-up assembly for diverse applications in nano-electronics and photonics. Titanium based oxides containing metals such as MTiO3 ( M = Ni, Pb, Fe, Co, Cu, and Zn ) are well known as functional inorganic materials with wide applications in electrodes of solid oxide fuel cells (SOFC), metal-air barriers, gas sensors, and high performance catalysts. Various methods for the preparation of metal oxide microcrystalline powders and thin films were reported including solid state reactions, co-precipitation, thermal decomposition of peroxide precursors, chemical vapour deposition (CVD), atomic layer deposition, pulsed laser deposition, electron beam evaporation, photo-formation and sol-gel route. However, the sol-gel technique has many advantages over other techniques, such as homogeneity, stoichiometry control, purity and ease of processing. Recently, in our laboratory some nanoscale metal oxide fibers, such as alumina- borate, titania-silica, alumina-silica, silica, niobium oxide, vanadium pentoxide, zinc oxide, germanium oxide, magnesium titanate, and nickel titanate have been successfully prepared by electrospinning process followed by calcination of the as-prepared inorganic/organic composite fibers at high temperatures. The surface morphology and diameter of the metal oxide fibers were determined from SEM and AFM images. Most of the metal oxide nanofibers possess the diameters in the range of 100 – 300 nm. The crystalline phase evolution of metal oxides as a function of calcination temperatures have been investigated by X-ray diffraction data. The complete removal of polymer templates and the formation of pure metal oxides were also confirmed by comparing the FT-IR spectra of the as-prepared composite nanofibers with that of the calcinated samples at various temperatures. The photoluminescence emission properties of germanium oxide and zinc oxide nanofibers prepared by electrospinning process were also studied at different excitaion wavelengths. |
| 저자 | 김학용 |
| 소속 | 전북대 |
| 키워드 | electrospinning; inorganic/organic composite; sol-gel route |
