산화알루미늄이 코팅된 이산화티타늄 입자의 제조와 자외선 흡수 특성

다국어 초록 (Multilingual Abstract)

Titanium dioxide has excellent whiteness, tinting power and light scattering effect. Therefore, It was applied in various fields such as pigment, paint and cosmetics. To improve dispersibility and stability in product, titanium dioxide is coated with aluminium oxide. Also, it could decrease photocatalytic activity.
In this study, titanium dioxide is coated with aluminium oxide synthesized via hydrothermal precipitation method. As process parameters changed the amount of Al2O3, pH, temperature and reaction time. The samples were characterized by scanning electron microscopy, energy dispersive spectrometer, X-ray diffractometer, Fourier transform infrared spectroscopy, thermogravimetry and differential thermal analsis, UV-Vis spectrometer. Also, photo activity of TiO2 coated with Al2O3 were analyzed by photodecomposition of methylene blue. Optimal condition of synthesis was conformed when amount of Al2O3 was 50 wt%, pH was 9, time was 1 hour. This study conformed increase of UV absorption and improvement of disadvantage such as high photocatalytic activity.

목차 (Table of Contents)

• Ⅰ. 서 론 1
• Ⅱ. 연구 배경 4
• Ⅱ-1. 이산화티타늄의 특성 4
• Ⅱ-2. 산화알루미늄의 분류 4
• Ⅲ. 실 험 10
• Ⅲ-1. 실험재료 10
• Ⅲ-2. 실험방법 10
• Ⅲ-3. 특성 분석 12
• Ⅳ. 결과 및 고찰 16
• Ⅳ-1. 산화알루미늄이 코팅된 이산화티타늄 입자의 제조 16
• Ⅳ-1-1. 반응물의 질량비에 따른 영향 16
• Ⅳ-1-2. pH의 영향 21
• Ⅳ-1-3. 반응 온도 및 시간의 영향 25
• Ⅳ-1-4. 전구체의 영향 31
• Ⅳ-2. 특성분석 34
• Ⅳ-2-1. EDS 분석 34
• Ⅳ-2-2. FT-IR 분석 37
• Ⅳ-2-3. 제타전위 37
• Ⅳ-2-4. TGA/DTA 분석 40
• Ⅳ-2-5. XRD 분석 42
• Ⅳ-2-6. UV-Vis 분석 44
• Ⅳ-2-7. 메틸렌블루 광분해 효율 46
• Ⅴ. 결 론 49
• 참고문헌 51