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Feature Designed Growth of 3D Flower-like SiO2 Growing on Polyethyleneimine Modified CaCO3 Microparticles
Xin-mei Zheng,Yan-xing Qi,Gong-xuan Lu*
Author NameAffiliationE-mail
Xin-mei Zheng Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, China  
Yan-xing Qi Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, China  
Gong-xuan Lu* Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, China gxlu@licp.cas.cn 
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.
Key words:  3D flower-like SiO2, Polyethyleneimine, CaCO3, Biomimetic pattern
FundProject:
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
郑欣梅,齐彦兴,吕功煊*
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.
关键词:  花朵型SiO2,聚乙烯亚胺,碳酸钙,仿生模板
DOI:10.1088/1674-0068/25/06/687-690
分类号: