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Two fractal structures of methyl-modified Silica gels by SAXS
其他题名小角x 射线散射法研究甲基改性氧化硅凝胶的双分形结构
Xu, Y; Li, ZH; Fan, WH; Wu, D; Sun, YH; Wang, J; Dong, BZ; Wang J(王俊); Dong BZ(董宝中)
2003
发表期刊ACTA PHYSICA SINICA
卷号52期号:2页码:442-447
通讯作者Chinese Acad Sci, Shanxi Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Lab Synchrotron Radiat, Beijing 100039, Peoples R China
文章类型Article
摘要With tetraethoxysilane [ Si(OC2 H-5)(4), TEOS] and methyltriethoxysilane [ CH3 Si(OC2 H-5)(3), MTES] as precursors, two kinds of methyl-modified silica gels were prepared by the two-step method and co-hydrolysis method. The gels were tested at the small angle x-ray scattering( SAXS) Station of Beijing Synchrotron Radiation Facility( BSRF). We calculated the average particle diameter and the special surface area between the two phases. On the basis of these data the fractal characters of gels were analyzed, and two fractal structures were found in all the samples. The two fractal dimensions indicated two fractal structures on two scales, i.e., from primary SiO2 particles to first-aggregates and from first- aggregates to clusters. Aided by transmission electronic microscope (TEM) we confirmed the two different microstructures of the gels prepared using the two different methods. It can be said that SAXS is a powerful technigue to study microstructures of gel systems by studying its fractal structure.
关键词methyl-modified gel silica SAXS fractal structure
学科领域Physics
研究领域[WOS]Physics ; Physics
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语种英语
研究领域[WOS]Physics ; Physics
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000181325100036
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被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237500
专题多学科研究中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Xu, Y,Li, ZH,Fan, WH,et al. Two fractal structures of methyl-modified Silica gels by SAXS[J]. ACTA PHYSICA SINICA,2003,52(2):442-447.
APA Xu, Y.,Li, ZH.,Fan, WH.,Wu, D.,Sun, YH.,...&董宝中.(2003).Two fractal structures of methyl-modified Silica gels by SAXS.ACTA PHYSICA SINICA,52(2),442-447.
MLA Xu, Y,et al."Two fractal structures of methyl-modified Silica gels by SAXS".ACTA PHYSICA SINICA 52.2(2003):442-447.
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