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

L. Yedra; A. Eljarrat; R. Arenal; L. López-Conesa; E. Pellicer; A. López-Ortega; M. Estrader; J. Sort; M. D. Baró; S. Estradé; F. Peiró

doi:10.1039/C6AN00562D

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

L. Yedra,‡*^ab A. Eljarrat,^a R. Arenal,^cd L. López-Conesa,^a E. Pellicer,^e A. López-Ortega,^f M. Estrader,^g J. Sort,^h M. D. Baró,^e S. Estradé^ab and F. Peiró^a

Author affiliations

* Corresponding authors

^a Laboratory of ElectronNanoscopies (LENS)-MIND/IN2UB, Dept. d'Electrònica, Universitat de Barcelona, c/MartíFranqués 1, E-08028 Barcelona, Spain
E-mail: llyedra@el.ub.edu

^b CCiT, Scientific and TechnologicalCenters, Universitat de Barcelona, E-08028 Barcelona, Spain

^c Laboratorio de Microscopias Avanzadas (LMA), Instituto de Nanociencia de Aragon (INA), Universidad de Zaragoza, E-50018 Zaragoza, Spain

^d Fundacion ARAID, E-50004 Zaragoza, Spain

^e Departament de Física, Facultat de Ciències, UniversitatAutònoma de Barcelona, E-08193 Barcelona, Spain

^f INSTM and Dipartimento di Chimica “U. Schiff”, Universitàdegli Studi di Firenze, Via dellaLastruccia 3, Sesto Fiorentino, I-50019 Firenze, Italy

^g Departament de Química Inorgànica, Universitat de Barcelona, Diagonal 645, Barcelona, Spain

^h Institució Catalana de Recerca i EstudisAvançats (ICREA) and Departament de Física, Facultat de Ciències, UniversitatAutònoma de Barcelona, E-08193 Barcelona, Spain

Abstract

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 Fe_xCo_(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.

Analyst

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

Abstract

Supplementary files

Article information

Download Citation

Permissions

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

Social activity

Search articles by author

Spotlight

Advertisements

Analyst