Yun C Y, Moon J, Chung K, Kang M, Shin C B, Choi K, Yi J
School of Chemical Engineering, Seoul National University, Seoul 151-742, Republic of Korea.
Water Sci Technol. 2004;49(4):177-81.
Photocatalytically active nanocrystalline titania particles were prepared using a hydrothermal process, by controlling the particle size and crystallinity. The crystalline structures and morphologies of the particles were characterized by X-ray diffraction and transmission electron microscopy. The BET method was used to determine the surface area and verify the grain size. To estimate the photocatalytic activity of the synthesized particles, a dye photodegradation experiment was carried out and the activity of the particles was compared with that of conventional titania. The results show that synthesized nanocrystalline titania particles had a higher photocatalytic activity than that of conventional titania. These findings provide a basis for the preparation of more effective and usef ul materials for use in AOP applications.
采用水热法，通过控制粒径和结晶度制备了具有光催化活性的纳米晶二氧化钛颗粒。通过X射线衍射和透射电子显微镜对颗粒的晶体结构和形貌进行了表征。采用BET法测定比表面积并验证晶粒尺寸。为了评估合成颗粒的光催化活性，进行了染料光降解实验，并将颗粒的活性与传统二氧化钛的活性进行了比较。结果表明，合成的纳米晶二氧化钛颗粒比传统二氧化钛具有更高的光催化活性。这些发现为制备用于高级氧化工艺应用的更有效和有用的材料提供了基础。
