NDLI: Adsorption of argon on mesoporous anodic alumina

Content Provider	Springer Nature Link
Author	Bruschi, Lorenzo Mistura, Giampaolo Park, Sang Joon Lee, Woo
Copyright Year	2014
Abstract	We have studied the adsorption of Ar on regular, highly-ordered alumina membranes made by anodization. The straight, non-interconnected pores have nominal diameters of 31 and 83 nm, with a relative dispersion better than 5 % in the pore size. Adsorption isotherms taken on bare membranes with pores of 83 nm present two distinct hysteresis loops. This is found to be a consequence of the fabrication procedure that yields a central circular region formed by open pores surrounded by an outer ring with closed bottom pores of smaller size, about 40 nm. For the membrane with pores of 31 nm, the difference between these pores is much smaller, about 2 nm, and this explains why the isotherms on these membranes show a single hysteresis loop as expected. Detailed real space analysis of the membranes by electron microscopy confirms the adsorption conclusions.
Starting Page	889
Ending Page	897
Page Count	9
File Format	PDF
ISSN	09295607
Journal	Adsorption
Volume Number	20
Issue Number	7
e-ISSN	15728757
Language	English
Publisher	Springer US
Publisher Date	2014-09-03
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Adsorption isotherms Anodic aluminum oxide (AAO) Porous materials Template Industrial Chemistry/Chemical Engineering Surfaces and Interfaces, Thin Films Engineering Thermodynamics, Heat and Mass Transfer
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering Surfaces and Interfaces

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