Adsorption hysteresis in self-ordered nanoporous alumina

被引：46

作者：

Bruschi, Lorenzo ^{[1
,2
]}

Fois, Giovanni ^{[1
,2
]}

Mistura, Giampaolo ^{[1
,2
]}

Sklarek, Kornelia ^{[3
]}

Hillebrand, Reinald ^{[3
]}

Steinhart, Martin ^{[3
]}

Goesele, Ulrich ^{[3
]}

机构：

[1] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy

[2] Univ Padua, CNISM, I-35131 Padua, Italy

[3] Max Planck Inst Microstruct Phys, D-06120 Halle, Germany

来源：

LANGMUIR | 2008年 / 24卷 / 19期

关键词：

D O I：

10.1021/la801493b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We performed systematic adsorption studies using self-ordered nanoporous anodic aluminum oxide (AAO) in an extended range of mean pore diameters and with different pore topologies. These matrices were characterized by straight cylindrical pores having a narrow pore size distribution and no interconnections. Pronounced hysteresis loops between adsorption and desorption cycles were observed even in the case of pores closed at one end. These results are in contrast with macroscopic theoretical models and detailed numerical simulations of the adsorption in a single pore. Extensive measurements involving adsorption isotherms, reversal Curves, and subloops carried out in closed-bottom pores Suggest that the pores do not desorb independently from one another.

引用

页码：10936 / 10941

页数：6

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