Structural and dynamic studies of water in mesoporous silicas using neutron scattering and nuclear magnetic resonance
Structural and dynamic studies of water in mesoporous silicas using neutron scattering and nuclear magnetic resonance
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DOI：
10.1088/0953-8984/16/45/009
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发表时间：
2004-11
期刊：
影响因子：
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通讯作者：
B. Webber;J. Dore
中科院分区：
文献类型：
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作者：
B. Webber;J. Dore
本文综述了用中子散射和核磁共振方法研究水在受限几何结构中的行为的实验技术。简要介绍了溶胶-凝胶二氧化硅的早期工作，并参考目前的MCM-和SBA-型二氧化硅的工作，这些研究结果进行了更新。特别注意的是集中在相变和过冷水和冰相之间的关系，在有限的几何形状的中孔。的特性被发现表现在一个系统的方式，虽然部分填充孔的成核现象揭示了一些意想不到的复杂性的SBA二氧化硅。
Experimental techniques for studying the behaviour of water in confined geometry using neutron scattering and NMR methods are reviewed. A brief survey is given of earlier work on sol–gel silicas and these findings are updated by reference to current work on MCM- and SBA-type silicas. Particular attention is focused on the phase transitions and the relation between supercooled water and ice phases in the confined geometry of the mesopores. The characteristics are found to behave in a systematic manner although the nucleation phenomenon for partially filled pores reveals some unexpected complexity for the SBA silicas.