Jump to main content
Jump to site search

Issue 3, 2018
Previous Article Next Article

Multicationic Sr4Mn3O10 mesostructures: molten salt synthesis, analytical electron microscopy study and reactivity

Author affiliations

Abstract

Inorganic molten salts are known as fluxes for the synthesis of novel bulk inorganic compounds and of mesostructures and nanostructures with crystal habits different from those observed in more conventional solvents. However, they have not demonstrated the ability to provide mesostructures and nanostructures of complex metal oxides that are currently unreported at the mesoscale and nanoscale. In this report, we show the first occurrence of Sr4Mn3O10 at the mesoscale, as platelets synthesized in molten strontium hydroxide at 600 °C with basal faces of few hundreds of nanometers and thicknesses ranging from 20 to 100 nm. We address carefully the atom-scale structure by transmission electron microscopy, including electron energy loss spectroscopy and electron tomography. We then propose that the final morphology is driven by the surface charge of each facet through surface energy. The reactivity of these platelets is then addressed, highlighting cation leaching when in contact with acidic water, which results in crystalline–amorphous core–shell platelets that are active electrocatalysts towards the oxygen reduction reaction.

Graphical abstract: Multicationic Sr4Mn3O10 mesostructures: molten salt synthesis, analytical electron microscopy study and reactivity

Back to tab navigation

Supplementary files

Publication details

The article was received on 10 Nov 2017, accepted on 16 Feb 2018 and first published on 16 Feb 2018


Article type: Communication
DOI: 10.1039/C7MH00952F
Citation: Mater. Horiz., 2018,5, 480-485
  •   Request permissions

    Multicationic Sr4Mn3O10 mesostructures: molten salt synthesis, analytical electron microscopy study and reactivity

    I. N. González-Jiménez, A. Torres-Pardo, S. Rano, C. Laberty-Robert, J. C. Hernández-Garrido, M. López-Haro, J. J. Calvino, Á. Varela, C. Sanchez, M. Parras, J. M. González-Calbet and D. Portehault, Mater. Horiz., 2018, 5, 480
    DOI: 10.1039/C7MH00952F

Search articles by author

Spotlight

Advertisements