Sorption properties of mesoporous multilayer thin films

被引：103

作者：

Cecilia Fuertes, Maria ^{[1
]}

Colodrero, Silvia ^{[2
]}

Lozano, Gabriel ^{[2
]}

Gonzalez-Elipe, Agustin R. ^{[2
]}

Grosso, David ^{[3
]}

Boissiere, Cedric ^{[3
]}

Sanchez, Clement ^{[3
]}

Soler-Illia, Galo J. de A. A. ^{[1
,4
]}

Miguez, Hernan ^{[2
]}

机构：

[1] Comis Nacl Energia Atom, RA-1429 Buenos Aires, DF, Argentina

[2] CSIC, Inst Ciencia Mat Sevilla, Seville 41092, Spain

[3] Univ Paris 06, Lab Chim Matiere Condensee, F-75252 Paris, France

[4] Consejo Nacl Invest Cient & Tecn, RA-1033 Buenos Aires, DF, Argentina

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 09期

关键词：

D O I：

10.1021/jp710612y

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The vapor sorption properties of multilayers made of ordered mesoporous thin films with tailored composition and mesostructure are herein investigated. Optical reflectance measurements versus partial pressure of several vapors are performed to analyze the interplay between the affinity to and the accessibility of the different types of layers in the structure. We find that the behavior of a mesoporous oxide layer within the multilayer largely differs from that of the isolated thin film, its sorption properties being determined by the interaction with neighboring films. An explanation of the phenomena observed in these complex systems is provided in terms of the pore size, the affinity of each type of layer to specific compounds, and the effect of neighboring layers in the sorption properties of bilayers by an independent environmental ellipsometric study.

引用

页码：3157 / 3163

页数：7

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