A5090922556- Metal-Organic Frameworks: Synthesis and Applications
- Building materials and conservation
- Near-Field Optical Microscopy
- Cultural Heritage Materials Analysis
- Covalent Organic Framework Applications
- Carbon Dioxide Capture Technologies
- Gas Sensing Nanomaterials and Sensors
- Advanced Cellulose Research Studies
- Conservation Techniques and Studies
- Photoacoustic and Ultrasonic Imaging
- Digital Holography and Microscopy
- Thermal properties of materials
- Thermal Radiation and Cooling Technologies
- Sensor Technology and Measurement Systems
- Membrane Separation and Gas Transport
- Carbon dioxide utilization in catalysis
- Industrial Gas Emission Control
- Silicon Nanostructures and Photoluminescence
- Advanced Photocatalysis Techniques
- Scientific Measurement and Uncertainty Evaluation
- ZnO doping and properties
- Metamaterials and Metasurfaces Applications
- Aerogels and thermal insulation
- Adsorption and biosorption for pollutant removal
- Gold and Silver Nanoparticles Synthesis and Applications
University of Lisbon
2021-2024
ESPCI Paris
2017-2021
Institut Langevin
2017-2021
Université Paris Sciences et Lettres
2017-2021
Centre National de la Recherche Scientifique
2014-2021
Université Paris Cité
2017-2021
Délégation Paris 5
2017-2018
American University of Beirut
2016
Lebanese University
2014
Abstract Herein, a robust microporous aluminum tetracarboxylate framework, MIL‐120(Al)‐AP, (MIL, AP: Institute Lavoisier and Ambient Pressure synthesis, respectively) is reported, which exhibits high CO 2 uptake (1.9 mmol g −1 at 0.1 bar, 298 K). In situ Synchrotron X‐ray diffraction measurements together with Monte Carlo simulations reveal that this structure offers favorable capture configuration the pores being decorated density of µ ‐OH groups accessible aromatic rings. Meanwhile, based...
Metal-Organic Frameworks (MOFs) with open metal sites (OMS) interact strongly a range of polar gases/vapors. However, under ambient conditions, their selective adsorption is generally impaired due to high OMS affinity water. This led previously the privilege selection hydrophobic MOFs for capture/detection volatile organic compounds (VOCs). Herein, we show that this paradigm challenged by metal(III) polycarboxylates MOFs, bearing concentration OMS, as MIL-100(Fe), enabling capture VOCs even...
Effective capture of polar volatile organic compounds under environmental conditions is a challenge owing to the adsorption competition between and water.
Abstract Owing to their high porosity and tunability, porous solids such as metal–organic frameworks (MOFs), zeolites, or activated carbons (ACs) are of great interest in the fields air purification, gas separation, catalysis, among others. Nonetheless, these materials usually synthetized powders need be shaped a more practical way that does not modify intrinsic property (i.e., porosity). Elaborating porous, freestanding flexible sheets is relevant shaping strategy. However, when loadings...
A novel strategy is proposed to synthesize metal–organic framework (MOF)–gelatin bionanocomposites by taking profit of the thermo-reversible character gelatin and liquid–liquid phase separation process, that is, coacervation. This enables formation based on a series chemically stable Zr4+ dicarboxylate MOFs (UiO-66 MOF-801) differing their hydrophilic–hydrophobic balance chemical functionality. Bionanocomposites with homogeneous uniform distribution MOF particles in matrix as well high...
Composites of metal–organic frameworks (MOFs) in polyurethane foams (PUF) are reported to adsorb polar or apolar volatile organic compounds (VOCs), avoiding the problems usually found when handling MOFs powder form. MOF/PUF composites were prepared using MIL-160(Al) and UiO-66(Zr)-(CF3)2 via one step process where particles incorporated during foam matrix formation. Under adjusted conditions, composite materials maintained shape characteristics MOF material, good mechanical stability,...
A deep understanding of the degradation cellulose diacetate (CDA) polymer is crucial in finding appropriate long-term stability solution. This work presents an investigation reaction mechanism hydrolysis using electronic density functional theory calculations with B3LYP/6-31++G** level to determine energetics reactions. information was coupled transition-state establish kinetics for both acid-catalyzed and noncatalyzed pathways. In this model, dependence on water concentration as a function...
Abstract Preserving culture heritage cellulose acetate-based historical films is a challenge due to the long-term instability of these complex materials and lack prediction models that can guide conservation strategies for each particular film. In this work, acetate degradation model proposed as basis selection appropriate storage specimen, considering its specific information. Due formulation complexity diversity produced over decades, we hereby propose hybrid modeling approach describe...
Low-temperature storage to slow down degradation is accepted by the film conservation community. Still, this solution prohibits public access, price-sensitive, has high energy costs, and there are concerns about their effects on physical stability material lifetime. In research, a smart developed based selective capture of acetic acid produced cellulose acetate polymer. This innovative approach Metal-Organic Frameworks (MOFs) for adsorption, specifically highly porous iron(III) MOF,...
CO2 adsorption technology is gaining so much attention as a viable technique to mitigate the greenhouse effect. Having appropriate adsorbent coupled with an optimized process design key issue toward its further development and wide industrialization. In current work, we research two types of pillared clays, namely, aluminum oxide (Al-PILC) zirconium (Zr-PILC) applied in pressure swing (PSA) for carbon dioxide capture cement industry. A comparison benchmark, zeolite 13X, made. The first...
A generalized lock-in detection method is proposed to extract amplitude and phase from optical interferometers when an arbitrary periodic or frequency modulation used. The actual function used create the reference signals providing optimal extraction of useful information, notably for sinusoidal modulation. This simple efficient approach has been tested applied sensitive spectroscopy near-field measurements. We analyze case where signal modulated we show how suppress contribution unmodulated...
Amine-grafted silicas are potential candidates for a variety of applications ranging from heterogeneous catalysis to CO2 capture. The presence moisture is inevitable in almost all real-life applications, and these very hygroscopic materials. A density functional theory study conducted better understand the effect on capture mechanism using an amine-functionalized silica support. It found that water reduces up 7 times activation barrier reaction. Moreover, combination free surface silanol...
Temperature characterization and quantification at the nanoscale remain core challenges in applications based on photoinduced heating of nanoparticles. Here, we propose a new approach to obtain quantitative temperature measurements individual nanoparticles by combining modulated photothermal stimulation heterodyne digital holography. From full-field reconstructed holograms, is determined with precision 0.3 K via simple without requiring any calibration or fitting parameters. As an...
We have investigated the effective dielectric response of a subwavelength grating made highly doped semiconductors (HDS) excited in reflection, using numerical simulations and spectroscopic measurement. The studied system can exhibit strong localized surface resonances has, therefore, great potential for surface-enhanced infrared absorption (SEIRA) spectroscopy application. It consists InAsSb deposited on lattice-matched GaSb. analysis demonstrated that resonance frequencies be inferred from...
Cellulose acetate in artefacts, such as cinematographic and photographic films, is an unstable material that perils the preservation of a variety objects heritage collections poses threats to human health. Therefore, it necessary develop sustainable conservation strategies. This deterioration named "vinegar syndrome" acetic acid other volatiles are formed during degradation. Low-temperature storage slow down degradation accepted by community. Still, these solutions prohibit public access,...
Owing to their high porosity and tunability, porous solids such as Metal-Organic Frameworks (MOFs), Zeolites Activated Carbons (ACs) are of great interest in various fields for instance gas separation, catalysis, water air purification, among others. These materials usually powder form need be shaped some practical way that does not modify intrinsic property (i.e. porosity). Making porous, freestanding flexible sheets is a relevant shaping strategy. However, achieving loadings (> 70 wt %)...
In a project to preserve photographic archives in Southeast Asia, the authors sought develop sustainable solutions with low environmental impact, avoiding air conditioning and using locally available materials. Dry cabinets were tested implemented store glass plate negative collection that was rehoused envelopes boxes made locally. The took just over year complete, two years of monitoring conditions have shown relative humidity can be stabilized at levels. However, dry are airtight limit...
Abstract Metal–Organic Frameworks (MOFs) with open metal sites (OMS) interact strongly a range of polar gases/vapors. However, under ambient conditions, their selective adsorption is generally impaired due to high OMS affinity water. This led previously the privilege selection hydrophobic MOFs for capture/detection volatile organic compounds (VOCs). Herein, we show that this paradigm challenged by metal(III) polycarboxylates MOFs, bearing concentration OMS, as MIL‐100(Fe), enabling capture...
The understanding of phonon lifetime and scattering rates is attracting an increasing interest due to the major role in thermal electrical conductivity which are key properties for technological applications. infrared complex dielectric function a crystal determined by harmonic characteristics together with intrinsic extrinsic rates. In order investigate interplay between nanostructured surface, reflectivity measurements from SiC nano-pyramids on substrate have been analysed using...