Electron energy-loss spectroscopic tomography of FexCo(3-x)O4 impregnated Co3O4 mesoporous particles: unraveling the chemical information in three dimensions

Electron energy-loss spectroscopy-spectrum image (EELS-SI) tomography is a powerful tool to investigate the three dimensional chemical configuration in nanostructures. Here, we demonstrate, for the first time, the possibility to characterize the spatial distribution of Fe and Co cations in a complex...

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Bibliographic Details
Authors: Yedra Cardona, Lluís, Eljarrat Ascunce, Alberto, Arenal, Raúl, López Conesa, Lluís, Pellicer Vilà, Eva M. (Eva Maria), López-Ortega, Alberto, Estrader i Bofarull, Marta, Sort, Jordi, Baró, M. D., Estradé Albiol, Sònia, Peiró Martínez, Francisca
Format: article
Status:Versión aceptada para publicación
Publication Date:2016
Country:España
Institution:Universidad de Barcelona
Repository:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/176670
Online Access:https://hdl.handle.net/2445/176670
Access Level:Open access
Keyword:Tomografia
Espectroscòpia de pèrdua d'energia d'electrons
Nanoestructures
Tomography
Electron energy loss spectroscopy
Nanostructures
Description
Summary:Electron energy-loss spectroscopy-spectrum image (EELS-SI) tomography is a powerful tool to investigate the three dimensional chemical configuration in nanostructures. Here, we demonstrate, for the first time, the possibility to characterize the spatial distribution of Fe and Co cations in a complex FexCo(3-x)O4/Co3O4 ordered mesoporous system. This hybrid material is relevant because of the ferrimagnetic/antiferromagnetic coupling and high surface area. We unambiguously prove that the EELS-SI tomography shows a sufficiently high resolution to simultaneously unravel the pore structure and the chemical signal.

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