| TiOCl2溶液合成异形TiO2纳米粉及形成机理研究 |
| |
| 引用本文： | 魏雨,张艳峰,韩梅娟,贾振斌. TiOCl2溶液合成异形TiO2纳米粉及形成机理研究[J]. 化学学报, 2001, 59(9): 1424-1429 |
| |
| 作者姓名： | 魏雨 张艳峰 韩梅娟 贾振斌 |
| |
| 作者单位： | 河北师范大学化学系.石家庄(050016) |
| |
| 基金项目： | 河北省自然科学基金(501115)资助项目 |
| |
| 摘 要： | 以TiOCl2溶液为前驱物，由室温至180℃直接反应均可获得TiO2纳米晶。当反应温度低于70℃，100℃和160℃时，沉淀粒子形貌分别为针形聚集体、球型和针形单晶。相应反应温度下所得沉淀的晶型分别为金红石型、混晶和金红石型。晶体的形貌和粒子的均一性强烈依赖于反应温度和成核与成长速率。详细讨论了TiOCl2溶液在各个温区的水解及TiO2粒子的形成机理。
|
| 关 键 词： | 二氧化钛 纳米相材料 金红石 水解 针形粒子 |
| 修稿时间： | 2000-12-20 |
Study on preparation and formation mechanism of nanophase TiO2 with different morphologies and crystalline-structures from TiOCl2 solution |
| |
| Wei Yu,Zhang Yanfeng,Han Meijuan,Jia Zhenbin. Study on preparation and formation mechanism of nanophase TiO2 with different morphologies and crystalline-structures from TiOCl2 solution[J]. Acta Chimica Sinica, 2001, 59(9): 1424-1429 |
| |
| Authors: | Wei Yu Zhang Yanfeng Han Meijuan Jia Zhenbin |
| |
| Affiliation: | Hebei Teachers Univ, Dept Chem.Shijiazhuang(050016) |
| |
| Abstract: | Nanocrystal TiO2 was prepared from the precursor TiOCl2 at temperatures ranging from room temperature to 180 ℃. The morphologies of precipitated particles were needle-shaped agglomerates (rutile), sphere -shaped (mixed crystad), or needle- shaped single crystals(rutile) when the reaction temperature was lower than 70℃, 100℃ and 160℃ respectively. The crystal morphology and particle uniformity were intensely dependent on the reaction conditions such as temperature, rate of nucleation and growth. The mechanism of TiO2 formation at various temperatures is discussed in detail. |
| |
| Keywords: | TiO2 |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《化学学报》浏览原始摘要信息 |
|
点击此处可从《化学学报》下载全文 |
