| 钛酸丁酯-乙酸钡溶胶系统中的化学机制 |
| |
| 引用本文： | 周方桥,梁鸿东,陈志雄.钛酸丁酯-乙酸钡溶胶系统中的化学机制[J].华中科技大学学报(自然科学版),2003,31(2):33-36. |
| |
| 作者姓名： | 周方桥 梁鸿东 陈志雄 |
| |
| 作者单位： | 广州大学理学院 |
| |
| 基金项目： | 广州市教育局科学研究基金项目. |
| |
| 摘 要： | 为用溶胶-凝胶技术制备BaTiO3薄膜，以乙酸钡、钛酸丁酯、乙酸、乙醇等为原料配制的前驱溶液系统，加入适量的乙酰丙酮螯合剂，可得到性能稳定的溶胶；利用FTIR分析，揭示了该溶液系统中的相关的化学反应机制。分析结果表明：该溶液系统的胶化主要取决于钛酸丁酯的逐步水解并与包括乙酸钡在内的其他有机分子的聚合；乙酸不仅作为乙酸钡的溶剂，而且能有效地减缓钛酸丁酯的水解速率而维持溶胶的稳定性；乙酰丙酮螯合剂的引入能控制金属有机分子的聚合度。
|
| 关 键 词： | 钛酸丁酯 乙酸钡 溶胶系统 化学机制 BaTiO3薄膜 Sol－Gel工艺 红外光谱分析 溶胶－凝胶技术 钛酸钡薄膜 |
| 文章编号： | 1671-4512(2003)02-0033-04 |
| 修稿时间： | 2002年9月12日 |
Chemical mechanism of titanium butoxide-barium acetate solution system for preparation of thin BaTiO3 film |
| |
| Zhou Fangqiao Liang Hongdong Chen Zhixiong Zhou Fangqiao Prof., Dept. of Physics,Guangzhou University,Guangzhou ,China..Chemical mechanism of titanium butoxide-barium acetate solution system for preparation of thin BaTiO3 film[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2003,31(2):33-36. |
| |
| Authors: | Zhou Fangqiao Liang Hongdong Chen Zhixiong Zhou Fangqiao Prof Dept of Physics Guangzhou University Guangzhou China |
| |
| Institution: | Zhou Fangqiao Liang Hongdong Chen Zhixiong Zhou Fangqiao Prof., Dept. of Physics,Guangzhou University,Guangzhou 510405,China. |
| |
| Abstract: | To prepare BaTiO 3 thin film by Sol Gel technology, the steady Ba Ti sol was synthesized from precursor solution of titanium butoxide, barium acetate, acetic acid and ethanol with acetylacetone as a chelating agent. By FTIR analysis, the chemical mechanism of relative reaction occurring in the solution was disclosed. The results show that gelling of the solution system depends on gradually hydrolysis of titanium butoxide and polymerization with other organic group line as well as barium acetate. Acetic acid acts not only as a solvent, but also as a steady agent to reduce hydrolysis rate of titanium butoxide. Acetylacetone was introduced as a chelating agent to control polymerizing degree of the metal organic molecule group line. |
| |
| Keywords: | BaTiO 3 thin film Sol Gel process FTIR |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
