| 利用聚乙烯亚胺修饰的CaCO3仿生模板合成3D花朵型二氧化硅微球 |
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| 引用本文： | 郑欣梅,齐彦兴,吕功煊.利用聚乙烯亚胺修饰的CaCO3仿生模板合成3D花朵型二氧化硅微球[J].化学物理学报,2012,25(6):687-690. |
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| 作者姓名： | 郑欣梅 齐彦兴 吕功煊 |
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| 作者单位： | 中国科学院兰州化学物理研究所，兰州730000;中国科学院兰州化学物理研究所，兰州730000;中国科学院兰州化学物理研究所，兰州730000 |
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| 摘 要： | 利用聚乙烯亚胺(PEI)修饰的碳酸钙仿生模板合成了具有3D花朵型形貌的SiO2微球.通过调整碳酸钙微粒表面不同浓度PEI的吸附量实现SiO2微球的形貌控制呈现花朵或刀锋的形状. 用XPS和SEM对制备的SiO2微粒进行表征. 结果表明，不用浓度的PEI修饰可以较好地控制3花朵型DSiO2微球的形貌.
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| 关 键 词： | 花朵型SiO2，聚乙烯亚胺，碳酸钙，仿生模板 |
| 收稿时间： | 8/7/2012 12:00:00 AM |
Feature Designed Growth of 3D Flower-like SiO2 Growing on Polyethyleneimine Modified CaCO3 Microparticles |
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| Xin-mei Zheng,Yan-xing Qi and Gong-xuan Lu.Feature Designed Growth of 3D Flower-like SiO2 Growing on Polyethyleneimine Modified CaCO3 Microparticles[J].Chinese Journal of Chemical Physics,2012,25(6):687-690. |
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| Authors: | Xin-mei Zheng Yan-xing Qi and Gong-xuan Lu |
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| Institution: | Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, China;Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, China;Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, China |
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| Abstract: | We report on the ability to create complex 3D flower-like SiO2 in vitro via CaCO3 micropar-icles supported by polyethyleneimine mediated biosilicification under experimentally altered chemical influences. The morphology, structure, composition of the product have been inves-tigated with the X-ray photoelectron spectrum, scanning electron microscope, transmission electron microscope, and energy-dispersive spectroscopy. The overall morphologies could be controlled to shift from a characteristic network of flower-like silica sphere to a sheet-like structure by adjusting physical adsorption of different amount of polyethyleneimine onto the surface of the CaCO3 microparticles. |
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| Keywords: | 3D flower-like SiO2 Polyethyleneimine CaCO3 Biomimetic pattern |
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