Mesoporous Silica Materials Synthesized via Sol-Gel Methods Modified with Ionic Liquid and Surfactant Molecules |
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Authors: | Cun-ying Xu Ru-lan Tang Yi-xin Hua and Peng-xiang Zhang |
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Institution: | Kunming University of Science and Technology, Kunming 650093, China;Kunming University of Science and Technology, Kunming 650093, China;Kunming University of Science and Technology, Kunming 650093, China;Kunming University of Science and Technology, Kunming 650093, China |
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Abstract: | Mesoporous silica materials were synthesized via a sol-gel method employing a room temperature ionic liquid (1-butyl-3-methylimidazolium tetrafluoroborate, bmim]BF4]) as a new solvent medium and further modified with surfactant (hexadecyl-trimethyl-ammonium bromide, CTAB) as a pore templating material. The synthesized samples were characterized by the transmission electron microscopy, X-ray diffraction, and N2 adsorption-desorption techniques. The results indicated that the mesoporous silica synthesized by using bmim]BF4] and CTAB as mixed templates showed better mesostructural order and smaller pore size, compared with mesoporous silica materials synthesized by using single bmim]BF4] as template under the same conditions. This indicates that the presence of surfactant can affect the microstructures of silica prepared by the present synthesis method. |
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Keywords: | Mesoporous silica Ionic liquid Surfactant |
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