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Preparation of Hierarchical Mesoporous Silica Nanoparticles through a Single‐Templating Approach
Author(s) -
Chen Yuanli,
Xiao Min,
Zhuang Wei,
Li Yi,
Li Baozong,
Yang Yonggang
Publication year - 2012
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201280026
Subject(s) - mesoporous material , lamellar structure , chemistry , transmission electron microscopy , mesoporous silica , nanotechnology , amphiphile , nanoparticle , scanning electron microscope , micelle , chemical engineering , catalysis , materials science , copolymer , crystallography , organic chemistry , composite material , polymer , aqueous solution , engineering
Silicas with hierarchical porous architectures attracted much attention, due to their potential applications in catalysis and separation. Generally, they were prepared through dual‐ or 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.