| 硅胶载体上制备纳米TiO2 |
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| 引用本文： | 王挺,蒋新.硅胶载体上制备纳米TiO2[J].化工学报,2003,54(12):1779. |
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| 作者姓名： | 王挺 蒋新 |
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| 作者单位： | 浙江大学材料与化工学院，浙江 杭州 310027 |
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| 基金项目： | 中国石油化工股份有限公司资助项目，教育部留学回国人员科研启动基金 |
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| 摘 要： | 引言 通过控制反应空间的尺度而限制晶核的生长,为制备纳米粒子提供了一种相对简易的方法,微乳液和反相微乳液就是典型的纳米反应器1～3],而利用硅藻土、高岭土等材料的层状结构和孔隙限制粒子生长、制备纳米复合材料的发展也很快4].
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| 关 键 词： | 吸附层反应器 纳米TiO2 原位法 |
PREPARATION OF NANO TiO2 ON SURFACE OF SILICA |
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| WANG Ting,JIANG Xin.PREPARATION OF NANO TiO2 ON SURFACE OF SILICA[J].Journal of Chemical Industry and Engineering(China),2003,54(12):1779. |
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| Authors: | WANG Ting JIANG Xin |
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| Abstract: | TiO2 nanoparticles were in-situ prepared on the solid/liquid interfacial adsorption layer. In the suspension of colloidal silica particles in binary mixtures of water/ethanol, a water-rich layer was formed on the hydrophilic surface of SiO2. After phase equilibrium, dropping tetrabutyl titanate diffused into the adsorption layer and reacted with water. After centrifugation and drying, samples were obtained. The solvent-substituted experiment testified that reaction took place on the adsorption layer. TEM, XRD and electronic energy spectrum indicated uniform TiO2 laid over the surface of SiO2 particles. The effect of reaction temperature was investigated and potential mechanism was discussed. |
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