| 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 |
|
Betelu, Stéphanie
Bureau de Recherches Géologiques et Minières
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (28/28 displayed)
- 2024Optimization of experimental conditions of PFOA defluorination using DMSO/NaOH mixture
- 2024Over a year follow-up of parameters of a cemento-bentonitic filling material (CBFM) and of the corrosion potential of a carbon steel lining submerged by the CBFM, in an underground gallery cell
- 2024Long term monitoring of physical and chemical parameters of a cemento-bentonitic filling material (CBFM) and of corrosion potential ofa horizontal pipe made of carbon steel, submerged by the CBFM intoa sealed cell of underground gallery
- 2024Influence of microstructure and pore saturation in measuring corrosion rates of a carbon steel API 5L X65 in contact with cement grout in future nuclear waste disposal program
- 2023Numerical Insights into the Ability of Indirect Galvanostatic Pulse in Wenner Configuration to Locate Corroding Areas in Macrocell Corrosion of Steel in Concrete
- 2023Corrosion and inhibition of carbon steel XC38 in a standardized reconstituted geothermal water (SRGW) at 100°C and 120 bars of pressure in the absence or presence of biosourced inhibitors
- 2023Inversion of non-invasive resistivity measurements in fourelectrodes configuration for corrosion characterization in reinforced concrete samples
- 2023Corrosion control of ruthenium oxy-hydroxide coating for the development of robust pH sensors: observation and monitoring of the near field of a nuclear waste disposal site
- 2023Influence of polysulfide radicals on the mechanisms and intensity of corrosion of a carbon steel API 5L X65 in contact with cement grout in future nuclear waste disposal program ; Influence des radicaux de polysulfures sur les mécanismes et l'intensité de la corrosion d'un acier au carbone API 5L X65 en contact avec un coulis de ciment dans un futur programme de stockage de déchets nucléaires
- 2023Corrosion Current Density of API 5L X65 Carbon Steel in Contact with Natural Callovian-Oxfordian Clay Pore Water, Assessed by Various Electrochemical Methods over 180 Dayscitations
- 2023Influence of polysulfide radicals on the mechanisms and intensity of corrosion of a carbon steel API 5L X65 in contact with cement grout in future nuclear waste disposal program
- 2022Comparative study of the effectiveness of organic petro-or biosourced surfactants in inhibiting carbon steel corrosion in a standardized reconstituted geothermal water (RGW)
- 2022Assessement of electrochemical behaviour and of corrosion current density of the carbon steel API 5L X65 in contact with cement grout in a nuclear waste disposal program
- 2022Corrosion current density evolution of the carbon steel API 5L X65 in contact with natural callovo-oxfordian water assessed by various electrochemical methods
- 2022Corrosion current density evolution of the carbon steel API 5L X65 in contact with natural callovo-oxfordian water assessed by various electrochemical methods
- 2022Assessement of electrochemical behaviour and of corrosion current density of the carbon steel API 5L X65 in contact with cement grout in a nuclear waste disposal program
- 2022Comparative study of the effectiveness of organic petro-or biosourced surfactants in inhibiting carbon steel corrosion in a standardized reconstituted geothermal water (RGW)
- 2022Mechanism and kinetics of reductive dechlorination of hexachlorobutadiene and hexachloroethane by bimetallic Pd/Fe microparticles using an indirect and continuous monitoring of iron corrosion
- 2022CORROSION DENSITY OF THE CARBON STEEL API 5L X65 IN CONTACT WITH CALLOVO-OXFORDIAN CLAY PORE WATER ASSESSED BY USING VARIOUS ELECTROCHEMICAL METHODS
- 2022CORROSION DENSITY OF THE CARBON STEEL API 5L X65 IN CONTACT WITH CALLOVO-OXFORDIAN CLAY PORE WATER ASSESSED BY USING VARIOUS ELECTROCHEMICAL METHODS
- 2022Mechanisms and kinetics of carbon steel corrosion/scaling and inhibition in actual or reconstituted and treated geothermal waters
- 2021Mechanisms and kinetics of carbon steel corrosion/scaling and inhibition in actual or reconstituted and treated geothermal waters
- 2018Exploration into the ionic exchanges in the Ni/Fe Lamellar Double Hydroxide by in-situ techniques under polarization
- 2017Intercomparison of Ta and Ti solid-electrodes for pH measurements under oxic and anoxic conditions in reconstituted waters of a future nuclear waste disposal
- 2013Improved monitoring of the reductive dechlorination of PCE in polluted soils by using geophysical and electrochemical measurements carried out in columns
- 2012Mechanistic and kinetic study of pyrite (FeS2)-hydrogen (H2) interaction at 25°C using electrochemical techniques
- 2012Mechanistic study of pyrite reduction by hydrogen in NaCl 0.1 M at 90°C using electrochemical techniques
- 2012H-terminated polycrystalline boron doped diamond electrode for geochemical sensing into underground components of nuclear repositories
Places of action
| Organizations | Location | People |
|---|
document
Exploration into the ionic exchanges in the Ni/Fe Lamellar Double Hydroxide by in-situ techniques under polarization
Abstract
Lamellar Double Hydroxides (LDH) are solids with a structure similar to that of brucite Mg(OH)2 in which some divalent cations are replaced by trivalent cations. This substitution creates an excess of positive charges in the octahedral layers, which is compensated by the presence of exchangeable anions in the interlayer space.1The choice of electroactive cations for the synthesis of LDH-coated electrodes enables their reversible electrochemical oxidation and reduction that are observed using the cyclic voltammetry method. Coupling this technique with a crystal quartz microbalance permits the measure of the variations in mass of the coated film and witnesses the reversible transfer of anions1 during a series of oxidation and reduction steps of cations constituting the layers. Reversibility of anionic exchanges (like nitrate, nitrite or arsenate) is of fundamental and industrial interest as it paves the way to applications in water treatment against numerous anionic pollutants.2 In this presentation the nature of the transferred species under the polarization of a thin film of LDH are further investigated with in situ techniques. For this study, the Ni/Fe LDH was chosen for its high electrical conductivity and the facile reduction and oxidation of Ni. It was chemically synthesized by the coprecipitation method with variable pH to form nano-platelets that increase the LDH/aqueous medium interface and enhance the anionic exchanges. Its physical and chemical properties have been characterized by XRD, SEM, infrared spectroscopy and Energy Dispersive X-ray Spectroscopy. For the study of the ionic exchanges, we employ the ac-electrogravimetry3 technique. It is a laboratory-made nondestructive in situ technique that measures the transfer function ∆m/∆E(ω) of the polarized film to distinguish the contribution of several species (cations, anions, solvent) occurring in the exchange, as well as their molar mass, their concentration and kinetics. We also follow the intercalation/deintercalation of species by in situ XRD measurements by observing the (003) peak which is a marker of the interlamellar distance in the LDH. The use of in situ techniques under polarization (ac-electrogravimetry and XRD), with the contribution of other common physical analyses, illuminate the ionic exchanges in the Ni/Fe LDH. Acknowledgment: We thank the Labex Matisse and the French Geological Survey (BRGM) for their financial support