STUDY OF MESOPOROUS SILICA MATERIALS BY SMALL ANGLE X—RAY SCATTERING

• 作者: 吴东 孙予罕 巩雁军 张晔 李志宏 柳义 王俊 董宝中
• 来源期刊: 北京同步辐射装置：英文版
• 学科: 化学
• 关键词: 小角X射线散射分析 SAXS 中孔硅石 结构分析 样品
• 年，卷（期）: bjtbfszzywb,（2）
• 页码范围: 12-15
• 页数: 4页
• 分类号: O613.72

摘要

Small angle X-ray scattering experiments have been performed to study the microstructure of messoporous silica meterials prepared by condensation of tetraethylorthosilicate using nonionic alkylpolyethyleneoxide(AEO9) and ionic cetyltrimethylammonium bromide (CTAB) surfactant as templates.It is the pores within the nanometre range that produce the main cattering.The scattering of the pure silica systems obey Porod’s law.This may be because the templates produce some additional scattering background and then make the scattering of pores distorted.The results show that the full removal of templates from the pores of the materials by Soxhlet extraction is very easy for AEO9,but it is difficult for CTAB.The positive deviation correction is also perfromed.