| 溶胶凝胶法制备三维规则排列大孔TiO2材料 |
| |
| 引用本文： | 沈勇,邬泉周,李玉光.溶胶凝胶法制备三维规则排列大孔TiO2材料[J].中山大学学报(自然科学版),2002,41(3):45-47. |
| |
| 作者姓名： | 沈勇 邬泉周 李玉光 |
| |
| 作者单位： | 中山大学化学与化学工程学院,广东,广州,510275 |
| |
| 基金项目： | 广东省十五重点资助项目 (A30 40 30 2 ) |
| |
| 摘 要： | 以聚苯乙烯微球 (LatexSphere)离心后形成的三维规则排列的胶晶 (colloidcrystal)作模板 ,用钛酸丁酯、水、乙醇等配制的溶胶填充微球之间的间隙 ,然后原位形成凝胶 ,最后通过焙烧除去微球得到三维规则排列大孔TiO2 材料 (3DOM)。溶胶的浓度一般控制在 0 5～ 1 0md/L之间。焙烧过程的升温速度应控制在 5℃ /min以下。得到的样品表面可观察到五颜六色的彩光。从SEM照片可观察到 ,球形孔大小均匀 ,排列整齐 ,孔壁填充完全。孔径在 5 30nm左右 ,孔的排列呈面心立方结构 ,孔与孔之间由小孔窗相互交连。XRD表明孔壁含有锐钛矿和金红石两种晶型 ,2种晶型质量分数大约各占 5 0 %。
|
| 关 键 词： | TiO2 3DOM 聚苯乙烯微球 胶晶 |
| 文章编号： | 0529-6579(2002)03-0045-03 |
| 修稿时间： | 2002年1月15日 |
Synthesis of 3D Ordered Macroporous (3DOM) Titanium Dioxide by Sol-Gel Method |
| |
| SHEN Yong,WU Quan_zhou,LI Yu_guang.Synthesis of 3D Ordered Macroporous (3DOM) Titanium Dioxide by Sol-Gel Method[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2002,41(3):45-47. |
| |
| Authors: | SHEN Yong WU Quan_zhou LI Yu_guang |
| |
| Abstract: | Periodic macroporous titanium dioxide were successfully synthesized using PS colloid crystal as templates which were made by centrifuging latex sphere, filling in the voids with sol of terabutoxy_titane, and then transforming into gel in situ and removing latex sphere by calcinations.The macroporous TiO 2 crystals showed a beautiful iridescence in reflected light. SEM observations indicated that the pores were about 530nm and arrayed periodically in a face_centered cubic(fcc) structure and connected each other by small windows. XRD indicated the wall of the pores consisted of about 50% rutile and 50% anatase. |
| |
| Keywords: | TiO 2 3DOM Latex Sphere colloid crystal |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
