Surface fractal characteristics of silica aerogels

被引：53

作者：

Jarzebski, AB ^{[1
]}

Lorenc, J ^{[1
]}

Pajak, L ^{[1
]}

机构：

[1] SILESIAN UNIV,INST PHYS & CHEM MET,PL-40007 KATOWICE,POLAND

来源：

LANGMUIR | 1997年 / 13卷 / 05期

关键词：

D O I：

10.1021/la960011z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Internal surface structure of 13 samples of base-catalyzed silica aerogels synthesized using different reactant concentrations (TEOS, H2O) was investigated by means of small-angle X-ray scattering (SAXS) and Ng adsorption. Both SAXS and Frankel-Halsey-Hill plots of adsorption isotherms, interpreted in terms of equations of Pfeifer and co-workers, consistently show fractally rough surface structure for aerogels obtained from the low water content procedure and fractally smooth surface of those obtained with overstoichiometric water content.

引用

页码：1280 / 1285

页数：6

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