| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Brunelli, Michela
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (5/5 displayed)
- 2020A Multitechnique Study of Fluorinated Nanodiamonds for Low-Energy Neutron Physics Applicationscitations
- 2019Local and average structure of Yb-doped ceria through synchrotron and neutron pair distribution functioncitations
- 2015Percolating hierarchical defect structures drive phase transformation in Ce1-xGdxO2-x/2: a total scattering studycitations
- 2009Electron diffraction, X-ray powder diffraction and pair-distribution-function analyses to determine the crystal structures of Pigment Yellow 213, C<sub>23</sub>H<sub>21</sub>N<sub>5</sub>O<sub>9</sub>citations
- 2008Aluminium substitution in iron(II–III)-layered double hydroxides: Formation and cationic ordercitations
Places of action
| Organizations | Location | People |
|---|
article
Aluminium substitution in iron(II–III)-layered double hydroxides: Formation and cationic order
Abstract
The formation and the modifications of the structural properties of an aluminium-substituted iron(II–III)-layered double hydroxide (LDH) of formula (OH)12 SO4, 8H2O are followed by pH titration curves, Mössbauer spectroscopy and high-resolution X-ray powder diffraction using synchrotron radiation. Rietveld refinements allow to build a structural model for hydroxysulphate green rust, GR(SO42−), i.e. y=0, in which a bilayer of sulphate anions points to the Fe3+ species. A cationic order is proposed to occur in both GR(SO42−) and aluminium-substituted hydroxysulphate green rust when y<0.08. Variation of the cell parameters and a sharp decrease in average crystal size and anisotropy are detected for an aluminium content as low as y=0.01. The formation of Al-GR(SO42−) is preceded by the successive precipitation of FeIII and AlIII (oxy)hydroxides. Adsorption of more soluble AlIII species onto the initially formed ferric oxyhydroxide may be responsible for this slowdown of crystal growth. Therefore, the insertion of low aluminium amount (y∼0.01) could be an interesting way for increasing the surface reactivity of iron(II–III) LDH that maintains constant the quantity of the reactive FeII species of the material.