| 不同形貌纳米二氧化硅的制备及形成机理研究 |
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| 引用本文： | 邹雪艳,赵彦保,李宾杰.不同形貌纳米二氧化硅的制备及形成机理研究[J].化学研究,2011,22(4):7-10. |
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| 作者姓名： | 邹雪艳 赵彦保 李宾杰 |
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| 作者单位： | 1. 河南大学特种功能材料重点实验室,河南开封,475004
2. 河南大学医学院,河南开封,475004 |
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| 基金项目： | 国家自然科学基金资助项目(20671029); 省部共建基金资助项目(SBGJ090515) |
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| 摘 要： | 在水醇体系中,以正硅酸四乙酯(TEOS)作为硅源、氨水作为催化剂,快速合成了哑铃状、纤维状及链状3种形貌的纳米SiO2；利用透射电子显微镜分析了产物的微观结构,着重探讨了氨水浓度、TEOS浓度及TEOS滴加速度对纳米SiO2形貌的影响,并提出了不同形貌纳米SiO2的形成机理.
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| 关 键 词： | 纳米SiO2 形貌控制 制备 形成机理 |
Synthesis and formation mechanism of nanoscale silica with different morphology |
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| ZOU Xue-yan,ZHAO Yan-bao,LI Bin-jie.Synthesis and formation mechanism of nanoscale silica with different morphology[J].Chemical Research,2011,22(4):7-10. |
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| Authors: | ZOU Xue-yan ZHAO Yan-bao LI Bin-jie |
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| Institution: | ZOU Xue-yan1,ZHAO Yan-bao1,LI Bin-jie2(1.Key Laboratory for Special Functional Materials,Henan University,Kaifeng 475004,Henan,China,2.Medical College,China) |
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| Abstract: | A series of nanostructured silica with dumbbell-like,fiber-like and chain-like shapes were synthesized in water-ethanol systems using tetraethyl orthosilicate(TEOS) as the precursor and ammonia as the catalyst.The morphology and microstructure of as-synthesized nanosilica samples were analyzed by means of transmission electron microscopy(TEM).The influences of concentration of ammonia and TEOS as well as adding rate of TEOS on the morphology of the products were highlighted;and the possible formation mechan... |
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| Keywords: | nano silica morphology control synthesis formation mechanism |
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