一种在壳壁上制备具有可调孔的中空二氧化硅微球的新策略。

New strategy to prepare hollow silica microspheres with tunable holes on the shell wall.

机构信息

School of Chemistry and Materials Science, Ludong University , Yantai 264025, China.

出版信息

Langmuir. 2014 Jan 28;30(3):683-6. doi: 10.1021/la404595r. Epub 2014 Jan 16.

Abstract

Hollow silica microspheres with holes of tunable numbers and sizes on the shell wall were prepared in this study. Clusters with positively charged polystyrene (PS) microspheres as the central spheres (CSs) and negatively charged PS spheres as the "halo" spheres (HSs) were formed via electrostatic interactions and utilized as a template. In the subsequent silica coating process, only CS was selectively coated; hence, after calcination, porous hollow silica microspheres were obtained.

摘要

本研究制备了壳壁上具有可调数量和尺寸孔的中空二氧化硅微球。通过静电相互作用形成了以带正电荷的聚苯乙烯（PS）微球为中心球（CS）和带负电荷的 PS 球为“晕球”（HS）的团聚体，并将其用作模板。在随后的二氧化硅涂覆过程中，只有 CS 被选择性涂覆；因此，经过煅烧后，得到了多孔中空二氧化硅微球。