Synthesis of rod-like mesoporous silica with hexagonal appearance using sodium silicate as precursor |
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| Authors: | Shuhua?Han,Wanguo?Hou mailto:shuhhan@sdu.edu.cn" title=" shuhhan@sdu.edu.cn" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author,Wenxiu?Dang,Jun?Xu,Jifan?Hu,Dongqing?Li |
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| Affiliation: | (1) Laboratory of Colloid and Interface Chemistry of State Education Ministry, Shandong University, 250100 Jinan, P. R. China;(2) Department of Physics, Shandong University, 250100 Jinan, P. R. China;(3) Department of Mechanical and Industrial Engineering, University of Toronto, Ontario, M5S 3G8, Canada |
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| Abstract: | ![]()
Using sodium silicate as precursor, rod-like mesoporous silica with hexagonal appearance was synthesized by controlling the pH value of a mixed micelles solution of cetyltrimethylammonium bromide (CTAB) and cetyltrimethylammonium chloride (CTAC) during hydrolysis of ethyl acetate. The resulting mesoporous silica was characterized by small angle X-ray diffraction, nitrogen gas adsorption-desorption measurement and scanning electron microscopy. Results showed that the regular rod-like shapes with hexagonal appearance were obtained at a 9:1 molar ratio of CTAB to CTAC, and that the amounts and lengths of the rod-like mesoporous silica particles decreased with decreasing CTAB to CTAC molar ratio. There existed a type IV adsorption isotherm and an H1 hysteresis loop in N2 gas adsorption-desorption curves. |
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| Keywords: | Morphology Mesoporous materials Template Cetyltrimethylammonium bromide Cetyltrimethylammonium chloride |
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