Morphology-controlled synthesis of mesoporous silica with co-template of surfactant P123 and ionic liquid [Dmim]Cl |
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Authors: | Pei Han Tuanchun Liu Xiaowei Ji Shaokun Tang |
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Institution: | a Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, China;
b Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), Tianjin University, Tianjin 300072, China |
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Abstract: | Mesoporous silicas with different morphologies have attracted great interest in the fields of catalysis, separation and so on. In this study, silica hollow tubes with ordered mesopores were synthesized via a novel sol-gel method with an ionic liquid 1-decyl-3-methylimidazolium chloride (Dmim]Cl) and a nonionic surfactant P123 (PEO20PPO70PEO20) as the co-template. Comparatively, silica hollow spheres with disordered mesopores were synthesized with only Dmim]Cl as the template. The template dosage is the key factor in controlling the morphology. The micelles assembly mechanism based on hydrogen bonding interactions is proposed to be responsible for the formation of the final silica morphology and mesostructure. |
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Keywords: | Silica hollow spheres Silica tubes Mesoporous Co-template Ionic liquids P123 |
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