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Three-Dimensional Chemistry of Multiphase Nanomaterials by Energy-Filtered Transmission Electron Microscopy Tomography

Published online by Cambridge University Press:  02 October 2012

Lucian Roiban ,
Loïc Sorbier ,
Christophe Pichon ,
Pascale Bayle-Guillemaud ,
Jacques Werckmann ,
Marc Drillon  and
Ovidiu Ersen
Lucian Roiban
Affiliation:
Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS UMR 7504, 23 rue du Loess, BP 43, F-67034 Strasbourg Cedex 2, France IFP Energies nouvelles, Rond-point de l'échangeur de Solaize, BP 3, 69360 Solaize, France
Loïc Sorbier
Affiliation:
IFP Energies nouvelles, Rond-point de l'échangeur de Solaize, BP 3, 69360 Solaize, France
Christophe Pichon
Affiliation:
IFP Energies nouvelles, Rond-point de l'échangeur de Solaize, BP 3, 69360 Solaize, France
Pascale Bayle-Guillemaud
Affiliation:
CEA/INAC, 17, rue des Martyrs, 38054 Grenoble cedex 9, France
Jacques Werckmann
Affiliation:
Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS UMR 7504, 23 rue du Loess, BP 43, F-67034 Strasbourg Cedex 2, France
Marc Drillon
Affiliation:
Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS UMR 7504, 23 rue du Loess, BP 43, F-67034 Strasbourg Cedex 2, France
Ovidiu Ersen*
Affiliation:
Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS UMR 7504, 23 rue du Loess, BP 43, F-67034 Strasbourg Cedex 2, France
*
*Corresponding author. E-mail: Ovidiu.Ersen@ipcms.unistra.fr
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Abstract

A three-dimensional (3D) study of multiphase nanostructures by chemically selective electron tomography combining tomographic approach and energy-filtered imaging is reported. The implementation of this technique at the nanometer scale requires careful procedures for data acquisition, computing, and analysis. Based on the performances of modern transmission electron microscopy equipment and on developments in data processing, electron tomography in the energy-filtered imaging mode is shown to be a very appropriate analysis tool to provide 3D chemical maps at the nanoscale. Two examples highlight the usefulness of analytical electron tomography to investigate inhomogeneous 3D nanostructures, such as multiphase specimens or core-shell nanoparticles. The capability of discerning in a silica-alumina porous particle the two different components is illustrated. A quantitative analysis in the whole specimen and toward the pore surface is reported. This tool is shown to open new perspectives in catalysis by providing a way to characterize precisely 3D nanostructures from a chemical point of view.

Keywords

electron tomographyEFTEM3D imagingchemical mapssilica-alumina
Type
Materials Applications
Information
Microscopy and Microanalysis , Volume 18 , Issue 5 , October 2012 , pp. 1118 - 1128
Copyright
Copyright © Microscopy Society of America 2012

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