Preparation of Hierarchical Mesoporous Silica Nanoparticles through a Single-Templating Approach

• Published in: Chinese journal of chemistry Vol. 30; no. 7; pp. 1582 - 1588
• Main Author: 陈媛丽 肖敏 庄伟 李艺 李宝宗 杨永刚
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.07.2012; WILEY‐VCH Verlag; Wiley; Wiley Subscription Services, Inc
• Subjects: Chemistry; Chemistry, Multidisciplinary; helicity; mesoporous; Physical Sciences; Scanning electron microscopy; Science & Technology; Silica; sol-gel processes; surfactants; 二氧化硅纳米粒子; 介孔结构; 制备; 场发射扫描电子显微镜; 多孔结构; 模板方法; 结构导向剂; 透射电子显微镜; SOL-GEL TRANSCRIPTION; ENANTIOSELECTIVE SYNTHESIS; silica; NANOSTRUCTURES; surfactants; helicity; HELICAL SILICA; TRIMODAL PORE SYSTEM; CREATION; SURFACE; ORGANOGEL FIBERS; NANOTUBES; mesoporous; ARCHITECTURES; sol-gel processes
• ISSN: 1001-604X; 1614-7065
• DOI: 10.1002/cjoc.201280026

Silicas with hierarchical porous architectures attracted much attention, due to their potential applications in catalysis and separation. Generally, they were prepared through dualor triple-templating approaches. Herein, mesoporous silica nanoparticles with rod-like pore channels inside and lamellar mesopores on the surfaces were prepared using the self-assemblies of a chiral low-molecular-weight amphiphile as templates through a single-templating approach. The formation of the lamellar mesopores was studied by taking field-emission scanning electron microscopy and transmission electron microscopy images after different reaction times. The lamellar pores were proposed to be formed by merging rod-like micelles during the sol-gel process. Moreover, helical nanofibers with rod-like pore channels inside and lamellar mesopores on the surfaces were prepared with the addition of n-octanol as a co-structure-directing agent.