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Structural studies of mesoporous alumina membranes by small angle X-ray scattering

Dore, John C., Benfield, Robert E., Grandjean, Didier, Schmid, Günter, Kröll, Michael, Le Bolloc'h, David (2002) Structural studies of mesoporous alumina membranes by small angle X-ray scattering. Studies in Surface Science and Catalysis, 144 . pp. 163-170. ISSN 0167-2991. (doi:10.1016/S0167-2991(02)80130-6) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:13360)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1016/S0167-2991(02)80130-6

Abstract

Small-angle X-ray scattering (SAXS) has been used to study the structures of mesoporous alumina membranes. These membranes, produced by anodic deposition, have an arrangement of parallel cylindrical pores centred on a disordered hexagonal lattice. The SAXS intensity profile varies over five orders of magnitude, and is a convolution of a structure factor for the 2D distribution of pore axes with a cylinder form factor for the pores. Rotation of the plane of the membrane changes the pattern from a ring structure for channels parallel to the X-ray beam to a set of vertical spots for channels perpendicular to the beam. The oscillatory pattern changes systematically with the anodic deposition voltage, confirming a linear relationship between voltage and pore separation. Initial results are also reported for alumina membranes containing cobalt nanowires in the pore volume. The SAXS technique complements and extends direct-imaging methods such as electron microscopy, which view only the surface structure for a limited area of the sample. The results indicate that the membranes show greater disorder than normally deduced from other techniques.

Item Type: Article
DOI/Identification number: 10.1016/S0167-2991(02)80130-6
Subjects: Q Science
Divisions: Faculties > Sciences > School of Physical Sciences
Depositing User: Maggie Francis
Date Deposited: 11 Mar 2009 22:36 UTC
Last Modified: 30 Jul 2019 09:21 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/13360 (The current URI for this page, for reference purposes)
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