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Effect of Counterions on Synthesis of Mesoporous Silica by the Route of Template
Author(s) -
YuXiang Yang,
XuPing Qu,
YaRu Chen,
XiangChen Jia,
JianBo Zhang,
Xiangg Liu
Publication year - 2007
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2007.01732.x
Subject(s) - mesoporous material , counterion , transmission electron microscopy , scanning electron microscope , materials science , chemical engineering , mesoporous silica , bromide , sorption , crystallography , hexagonal crystal system , morphology (biology) , nanotechnology , chemistry , inorganic chemistry , ion , adsorption , organic chemistry , composite material , geology , engineering , catalysis , paleontology
Mesoporous silica materials with ordered hexagonal and parallel‐arranged pore channel have been synthesized using cetyl trimethylammonium bromide as a template and Na 2 SO 4 as counterions. Their ordered mesostructures were characterized by infrared spectroscopy, X‐ray diffraction patterns, scanning electron microscopy, transmission electron microscopy, and nitrogen sorption analysis. The effects of Na 2 SO 4 concentration on variations of morphology, specific surface area, and pore size were discussed; the results show that a high concentration of Na 2 SO 4 induces the formation of crystal threads with a “tubules‐within‐tubule” structure, and also leads to mesoporous silica materials with spherical, fabaceous, sheet‐like, or prismatic shapes. The results also show that a high concentration of Na 2 SO 4 can make the pore size decrease, but cannot change pore wall thickness, demonstrating the stability of the hexagonal‐shaped pores.