| 铝锆偶联剂的合成及对纳米TiO2的表面改性 |
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| 引用本文： | 李滨,李友明,杨文亮.铝锆偶联剂的合成及对纳米TiO2的表面改性[J].华南理工大学学报(自然科学版),2009,37(6). |
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| 作者姓名： | 李滨 李友明 杨文亮 |
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| 作者单位： | 华南理工大学,造纸与污染控制国家工程研究中心,广东,广州,510640 |
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| 基金项目： | 教育部长江学者和创新团队发展计划 |
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| 摘 要： | 以聚合氯化铝(PAC)、氧氯化锆和己二酸等为原料合成了带有羧基功能基的铝锆偶联剂.借助傅里叶红外光谱、热重分析、X射线衍射、扫描电镜和粒度分布等测试方法对铝锆偶联剂及改性前后的纳米TiO2进行表征.对铝锆偶联剂表征的结果表明:己二酸分子中的一个羧基同时与铝和锆原子中心相连,另一羧基则作为偶联剂的功能基得以保留;铝锆偶联剂分子中无机部分所占比例高达71%.对利用铝锆偶联剂进行表面改性得到的纳米TiO2表征发现:铝锆偶联剂在纳米TiO2表面形成化学吸附,但此吸附并未对纳米TiO2的晶型产生影响;改性后的纳米TiO2在水中的分散性显著提高.
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| 关 键 词： | 铝锆偶联剂 合成 纳米TiO2 表面改性 界面性质 分散 |
Synthesis and Application of Zircoaluminate Coupling Agent as Surface Modifier of Nano-Sized Titanium Dioxide |
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| Li Bin,Li You-ming,Yang Wen-liang.Synthesis and Application of Zircoaluminate Coupling Agent as Surface Modifier of Nano-Sized Titanium Dioxide[J].Journal of South China University of Technology(Natural Science Edition),2009,37(6). |
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| Authors: | Li Bin Li You-ming Yang Wen-liang |
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| Institution: | Li Bin Li You-ming Yang Wen-liang(National Engineering Research Center of Papermaking and Pollution Control,South China University of Technology,Guangzhou 510640,Guangdong,China) |
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| Abstract: | Zircoaluminate coupling agent with carboxy groups was synthesized,with polyaluminium chloride,zirconium oxychloride and adipic acid,etc.,as the materials.The product and the nano-sized TiO2 before and after the surface modification were then characterized by means of FT-IR,TG-DTG,XRD,TEM and by measuring the size distribution.It is found that one carboxy group in adipic acid forms a complex bridge between the aluminum and the zirconium centers,while the other remains unchanged as the functional group of the... |
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| Keywords: | zircoaluminate coupling agent synthesis nano-sized titanium dioxide surface modification interface property dispersion |
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