Is Physisorption Useful for Fine Pore Structure Control? Control of Pore Structure and Properties of SBA-15 by Paraffin Physisorption
Is Physisorption Useful for Fine Pore Structure Control? Control of Pore Structure and Properties of SBA-15 by Paraffin Physisorption
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DOI：
10.1246/cl.170873
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发表时间：
2018-01
影响因子：
1.6
通讯作者：
T. Uchida;Minoru Deguchi;Keisuke Asakura;S. Ozeki;T. Iiyama
中科院分区：
文献类型：
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作者：
T. Uchida;Minoru Deguchi;Keisuke Asakura;S. Ozeki;T. Iiyama
报道了一种通过物理吸附有机分子来控制有序介孔氧化硅（OMS）孔结构和性能的简单方法。通过N2气体和水蒸气吸附等温线、小角X射线散射和红外光谱对石蜡改性的OMS进行了表征。我们发现，石蜡首先吸附在孔表面的缺陷，导致一个光滑的OMS孔表面，因此，石蜡控制的孔结构。此外，表面疏水性随着石蜡填充分数的增加而增加。
A simple method for controlling the pore structure and properties of ordered mesoporous silica (OMS) by the physisorption of organic molecules is reported. The paraffin-modified OMSs were characterized by N2 gas and water vapor adsorption isotherms, small-angle X-ray scattering, and infrared spectroscopy. We found that paraffin first adsorbed on the pore surface defects, resulting in a smooth OMS pore surface; thus, the paraffin controlled the pore structure. In addition, the surface hydrophobicity increased with increasing paraffin filling fraction.