| 학회 |
한국재료학회 |
| 학술대회 |
2010년 봄 (05/13 ~ 05/14, 삼척 팰리스 호텔) |
| 권호 |
16권 1호 |
| 발표분야 |
C. Energy and the Environment(에너지 및 환경재료) |
| 제목 |
Fabrication and Characterization of Si3N4/TiO2 Membrane assisted by Sol-gel process and sponge replica method |
| 초록 |
TiO2 nanofiber was coated in the Si3N4 sponge scaffold using sol-gel method. Si3N4 sponge scaffold was used as a substrate and fabricated by sponge replica method depending on sintering additives such as 6Y2A(6wt% Y2O3, 2wt% Al2O3) and 6Y2M(6wt% Y2O3, 2wt% MgO) during nitridation. The Si3N4/TiO2 membrane had suitable pore size and surface roughness for fabrication of hollow membrane. Pore size of membrane was about 150 µm -200µm in diameter. TiO2 nanofiber was directly coated from TiO2 slurry which contained titanium tetra isoproxide(TTIP) as TiO2 precursor. After dipping into TiO2 forming precursor liquid, the TiO2 coated Si3N4 membrane was aged in NaOH solution to grow the TiO2 nanofibers from TiO2 particles. During the aging process, many TiO2 nanofibers came out through chemical reaction. Depending on the aging time, the morphology of TiO2 whiskers was dramatically changed. Formation of TiO2 nanofibers depending on the aging time and sintering additive of Si3N4/TiO2 membrane were carried out using XRD, SEM, Raman spectrometer techniques. Photocatalytic assay was investicated. |
| 저자 |
Hyun-Jin Hong1, Jae-Kil Han2, Minsung Kim3, Byong-Taek Lee1
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| 소속 |
1Department of Biomedical Engineering and Materials, 2Soonchunhyang Univ., 3Song-Do Techno park |
| 키워드 |
sol-gel process; Si3N4 membrane; Sponge replica method; sintering additive; nitridation
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| E-Mail |
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