Issue 22, 2013

Pair distribution function (PDF) analysis of mesoporous α-Fe2O3 and Cr2O3

Abstract

We have measured atomic pair distribution functions of novel mesoporous metal oxides, α-Fe2O3 and Cr2O3. These have an ordered pore mosaic as well as crystalline structure within the pore walls, making them an interesting class of materials to characterise. Comparison of “bulk” and mesoporous data sets has allowed an estimate of long range structural coherence to be derived; ≈125 Å and ≈290 Å for α-Fe2O3 and Cr2O3 respectively. Further “box-car” analysis has shown that above ≈40 Å both mesoporous samples deviate greatly from their bulk counterparts. This is attributed to the pores of the mesoporous structure creating voids in the pair-correlations, disrupting long range order.

Graphical abstract: Pair distribution function (PDF) analysis of mesoporous α-Fe2O3 and Cr2O3

Supplementary files

Article information

Article type
Paper
Submitted
03 Dec 2012
Accepted
16 Apr 2013
First published
17 Apr 2013

Phys. Chem. Chem. Phys., 2013,15, 8583-8588

Pair distribution function (PDF) analysis of mesoporous α-Fe2O3 and Cr2O3

A. H. Hill and M. Allieta, Phys. Chem. Chem. Phys., 2013, 15, 8583 DOI: 10.1039/C3CP44322A

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