以集胞藻6803为生物模板制备二氧化硅中空微球

›› 2011, Vol. 11 ›› Issue (1): 107-112.

以集胞藻6803为生物模板制备二氧化硅中空微球

张博任天瑞吴青海王全喜冯浩

上海师范大学生命与环境科学学院上海师范大学生命与环境科学学院上海师范大学生命与环境科学学院上海师范大学生命与环境科学学院中国科学院水利部水土保持研究所

收稿日期:2011-01-05 修回日期:2011-02-21 出版日期:2011-02-20 发布日期:2011-02-20
通讯作者: 张博

Preparation of Hollow Silica Microspheres with Synechocystis sp. PCC 6803 as Bio-template

ZHANG Bo REN Tian-rui WU Qing-hai WANG Quan-xi FENG Hao

College of Life and Environment Science, Shanghai Normal University College of Life and Environment Sciences, Shanghai Normal University College of Life and Environment Sciences, Shanghai Normal University College of Life & Environment Sciences, Shanghai Normal University Institute of Soil and Water Conservation, Chinese Academy of Sciences & Ministry of Water Resources

Received:2011-01-05 Revised:2011-02-21 Online:2011-02-20 Published:2011-02-20
Contact: ZHANG Bo

摘要/Abstract

摘要： 以蓝藻类的集胞藻6803为生物模板，用溶胶-凝胶法合成了不同形貌的SiO2，并对集胞藻6803和所制SiO2进行了分析. 建立了选择性合成单分散SiO2微球和空心SiO2的反应条件，探讨了不同形貌材料的形成机理. 结果表明，形成的SiO2微球形貌规整，分散良好，粒径分布较窄，平均粒径为1.5 mm，能保持细胞分裂阶段的原貌，呈无定型态. SiO2纳米粒子能均匀包覆在藻细胞表面，形成的空心SiO2微球壁厚均一，能保持藻细胞的形貌. 证实了空心SiO2和SiO2微球形成机理是吸附和渗透过程不同.

关键词: 生物模板, 集胞藻6803, SiO2微球, 空心SiO2

Abstract: Silica particles with different morphologies were prepared using cyanobacteria Synechocystis sp. PCC 6803 as a biotemplate via a sol-gel route. The Synechocystis sp. PCC 6803 and as-prepared silica were characterized. The reaction conditions of selective synthesis of monodisperse silica and hollow silica microspheres were established. The formation mechanism of different morphologies was discussed. The results indicated that the silica microspheres had an amorphous structure with an average diameter of 1.5 mm, and retained the original morphology of the cells. SiO2 nanoparticles could be uniformly coated on the surface of cells to form the hollow SiO2 microspheres, which had uniform wall thickness and could maintain the original morphology of cells. It was confirmed that the formation mechanisms of SiO2 hollow spheres and SiO2 microparticles were based on the difference between adsorption and penetration.

Key words: biotemplate, Synechocystis sp. PCC 6803, silica microspheres, hollow silica microspheres

中图分类号:

张博任天瑞吴青海王全喜冯浩. 以集胞藻6803为生物模板制备二氧化硅中空微球[J]. , 2011, 11(1): 107-112.

ZHANG Bo REN Tian-rui WU Qing-hai WANG Quan-xi FENG Hao. Preparation of Hollow Silica Microspheres with Synechocystis sp. PCC 6803 as Bio-template[J]. , 2011, 11(1): 107-112.