Publications by authors named "L Daemen"
Advanced Characterization of Solid-State Battery Materials Using Neutron Scattering Techniques.
Materials (Basel)
December 2024
Advanced batteries require advanced characterization techniques, and neutron scattering is one of the most powerful experimental methods available for studying next-generation battery materials. Neutron scattering offers a non-destructive method to probe the complex structural and chemical processes occurring in batteries during operation in truly in situ/in operando measurements with a high sensitivity to battery-relevant elements such as lithium. Neutrons have energies comparable to the energies of excitations in materials and wavelengths comparable to atomic distances in the solid state, thus giving access to study structural and dynamical properties of materials on an atomic scale.
View Article and Find Full Text PDFCapture of trace benzene is an important and challenging task. Metal-organic framework materials are promising sorbents for a variety of gases, but their limited capacity towards benzene at low concentration remains unresolved. Here we report the adsorption of trace benzene by decorating a structural defect in MIL-125-defect with single-atom metal centres to afford MIL-125-X (X = Mn, Fe, Co, Ni, Cu, Zn; MIL-125, TiO(OH)(BDC) where HBDC is 1,4-benzenedicarboxylic acid).
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- Ongoing research is focused on safely storing and utilizing hydrogen as a fuel alternative to carbon-based sources, but challenges like high energy costs due to its low density complicate this goal.
- Clathrates, or gas hydrates, form when hydrogen is trapped in water molecules, providing a potential solution for safely storing hydrogen as they only require water to create these structures.
- A proposed solution involves using hydrophobic mesoporous silica as a host material, which allows for hydrogen storage at lower pressures and temperatures, showing about a 20% reduction in required pressure for formation compared to traditional methods, with further insights gained from neutron scattering techniques.
Article Synopsis
- The study addresses the challenge of functionalizing metal-organic frameworks (MOFs) to improve their ability to adsorb trace levels of benzene.
- Researchers report that MFM-68-Cl, a zirconium-based MOF with chloro groups, shows a remarkable benzene uptake of 4.62 mmol/g at 298 K and 0.12 mbar.
- The enhanced adsorption is attributed to unique interactions between chloro groups and benzene, along with optimal pore size and linker flexibility, marking a significant advancement in this area of research.
While a range of characterisation techniques are available to probe CO adsorption processes, inelastic neutron scattering is scarcely used, primarily due to the reliance on hydrogeneous modes. Materials capable of adsorbing CO, such as solid supported-amines contain a range of C-H and N-H species, which can be probed to explore the adsorption of CO. Here we show the benefits of using inelastic neutron spectroscopy to probe CO adsorption with solid supported-amines, and the complementarity that can be achieved using different world-leading spectrometers.
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