| 氨水诱导硅核自组装制备介孔SiO_2 |
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| 引用本文： | 韩延东,颜峰,李铁纯,朱延松.氨水诱导硅核自组装制备介孔SiO_2[J].化学研究,2010,21(1):23-26. |
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| 作者姓名： | 韩延东 颜峰 李铁纯 朱延松 |
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| 作者单位： | 1. 鞍山师范学院,化学系,辽宁,鞍山,114005
2. 临沂师范学院,化学化工系,山东,临沂,276005 |
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| 摘 要： | 在无模板剂的条件下,通过控制氨水用量,利用正硅酸乙酯水解制备了粒径约20 nm的SiO2初级粒子;随后用过量氨水诱导SiO2初级粒子交联生长,得到孔径在10~50 nm、孔容达2.05 cm3.g-1的介孔SiO2;考察了介孔SiO2的吸附性能.结果表明,所制备的介孔SiO2具有优良的吸附性能.
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| 关 键 词： | 正硅酸乙酯 水解 SiO2纳米粒子 氨水诱导 自组装 介孔SiO2 制备 |
Preparation of Mesoporous SiO2 via Ammonia-Induced Self-Assembly of Primary Silica Nanoparticles |
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| HAN Yan-dong,YAN Feng,LI Tie-chun,ZHU Yan-song.Preparation of Mesoporous SiO2 via Ammonia-Induced Self-Assembly of Primary Silica Nanoparticles[J].Chemical Research,2010,21(1):23-26. |
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| Authors: | HAN Yan-dong YAN Feng LI Tie-chun ZHU Yan-song |
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| Institution: | 1. Department of Chemistry, Anshan Normal University, Anshan 114005, Liaoning, China ; 2. Department of Chemistry ＆ Chemical Engineering, Linyi Normal College, Linyi 276005, Shandong, China) |
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| Abstract: | Primary silica nanoparticles with an average size of 20 nm were prepared via ammonia- catalyzed hydrolysis of tetraethyl orthosilicate （TEOS） in the absence of template. Then excessive ammonia was introduced to induce crosslinking of the as-prepared primary silica nanoparticles generating mesoporous SiO2 with a pore size of 10-50 nm and pore volume of 2.05 cm^3·g^-1. The adsorption behavior of the mesoporous SiO2 was evaluated. Results indicate that the as-prepared mesoporous SiO2 possesses excellent adsorption ability. |
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| Keywords: | tetraethyl orthosilicate hydrolysis SiO nanoparticles ammonia induction self-as sembly mesoporous SiO2 preparation |
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