| 利用廉价硅酸盐为硅源合成微米级球形介孔二氧化硅 |
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| 引用本文： | 庞雪蕾,唐芳琼.利用廉价硅酸盐为硅源合成微米级球形介孔二氧化硅[J].河北科技大学学报,2010,31(1):9-13,17. |
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| 作者姓名： | 庞雪蕾 唐芳琼 |
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| 作者单位： | 1. 河北科技大学理学院,河北石家庄,050018
2. 中国科学院理化技术研究所,北京,100101 |
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| 基金项目： | 河北科技大学博士科研启动基金资助项目，河北科技大学学科建设专项经费资助项目 |
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| 摘 要： | 利用廉价的硅酸盐为二氧化硅前驱体,以非离子和阳离子表面活性剂为混合模板剂合成微米级的介孔二氧化硅,控制非离子和阳离子表面活性剂的量可以得到分散性较好的介孔二氧化硅球,并用SEM,XRD以及N2吸附-脱附,对所得介孔二氧化硅材料的宏观形貌和微观结构进行了表征。讨论了2种表面活性剂的比例对介孔二氧化硅形貌的影响,并用混合模板机理解释了球形介孔材料形成的原因。
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| 关 键 词： | 介孔氧化硅球 混合模板 硅酸钠 廉价硅源 |
| 收稿时间： | 2009/3/19 0:00:00 |
| 修稿时间： | 2009/4/28 0:00:00 |
Synthesis of micrometer-sized spherical mesoporous silica using inexpensive silicate as silica source |
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| PANG Xue-lei and TANG Fang-qiong.Synthesis of micrometer-sized spherical mesoporous silica using inexpensive silicate as silica source[J].Journal of Hebei University of Science and Technology,2010,31(1):9-13,17. |
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| Authors: | PANG Xue-lei and TANG Fang-qiong |
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| Institution: | 1. College of Sciences, Hebei University of Science and Technology, Shijiazhuang Hebei 050018, China 2. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, China) |
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| Abstract: | Micrometer-sized mesoporous silica spheres have been synthesized by using inexpensive sodium silicate as silica source. It was shown that completely spherical mesoporous silica could be obtained by controlling the molar ratios of cationic/nonionic surfactant in this present synthesis. The obtained mesoporous materials were determined by SEM, XRD and N2 sorption. The effects of different molar ratios of nonionic/cationic surfactant on the morphologies of mesoporous silica have been ex-amined and mixed templating pathway was proposed for the formation of the spherical morphologies. |
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| Keywords: | mesoporous silica spheres mixed templates sodium silicate inexpensive silica source |
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