Solvent-induced textural changes of as-synthesized mesoporous alumina, as reported by spin probe electron spin resonance spectroscopy

被引：8

作者：

Caragheorgheopol, A ^{[1
]}

Caldararu, H ^{[1
]}

Ionita, G ^{[1
]}

Savonea, F ^{[1
]}

Zilková, N ^{[1
]}

Zukal, A ^{[1
]}

Cejka, J ^{[1
]}

机构：

[1] Acad Sci Czech Republ, J Heyrovsky Inst Phys Chem, CR-18223 Prague, Czech Republic

来源：

LANGMUIR | 2005年 / 21卷 / 06期

关键词：

D O I：

10.1021/la047510h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The effect of solvent used during the synthesis and postsynthesis treatment on textural properties of organized mesoporous aluminas was investigated and related to the behavior of spin probes studied by electron spin resonance (ESR) spectroscopy. It was found that the structure of surfactant aggregates serving in the as-synthesized precipitates as templates could be easily modified by treatment with different solvents. This treatment induces corresponding variations in surface areas, mesopore volumes, and mesopore diameters of the final products. The ESR spectrum of 5-doxyl stearic acid spin probe properly reflects the changes in template structure based on changes of the solvent used and represents an early indicator of the corresponding textural modifications of the mesoporous alumina.

引用

页码：2591 / 2597

页数：7

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