A5024519035- Nanoparticles: synthesis and applications
- Advanced Nanomaterials in Catalysis
- Advanced ceramic materials synthesis
- Metal-Organic Frameworks: Synthesis and Applications
- Electronic and Structural Properties of Oxides
- Electrocatalysts for Energy Conversion
- High Temperature Alloys and Creep
- Plasma Diagnostics and Applications
- Pickering emulsions and particle stabilization
- Iron oxide chemistry and applications
- Catalytic Processes in Materials Science
- Ionic liquids properties and applications
- Graphene and Nanomaterials Applications
- Marine Biology and Ecology Research
- Synthesis and Biological Evaluation
- Crustacean biology and ecology
- Crystallization and Solubility Studies
- Polyoxometalates: Synthesis and Applications
- Silicone and Siloxane Chemistry
- X-ray Diffraction in Crystallography
- CO2 Reduction Techniques and Catalysts
- Semiconductor materials and devices
- Synthesis and biological activity
- Magnetic and transport properties of perovskites and related materials
- Aquatic Ecosystems and Phytoplankton Dynamics
Sorbonne Université
2013-2025
Fédération de Chimie et Matériaux de Paris-Centre
2014-2025
Centre National de la Recherche Scientifique
2012-2025
Centre des Matériaux
2021
PHENIX laboratory
2014
Laboratoire de Réactivité de Surface
2014
Université Paris Cité
2012
Délégation Paris 7
2012
Universidad Complutense de Madrid
2004-2005
A microporous Al trimesate-based metal–organic framework (MOF), denoted MIL-96-(Al), was selected as a porous hybrid filler for the processing of mixed matrix membranes (MMMs) CO2/N2 postcombustion separation. First, structural model MIL-96-(Al) initially reported revisited using combination synchrotron-based single-crystal X-ray diffraction, solid-state nuclear magnetic resonance spectroscopy, and density functional theory (DFT) calculations. In second step, pure crystals differing by their...
Abstract Alloying strategies are commonly used to design electrocatalysts that take on properties of their constituent elements. Herein, such a strategy is develop Zn–Cu alloyed electrodes with unique hierarchical porosity and tunable selectivity for CO 2 versus H + reduction. By varying the Zn/Cu ratio, tailored syngas mixtures obtained without production other gaseous products, which attributed preferential CO‐ ‐forming pathways alloys. The ratios also significantly less sensitive applied...
Abstract The syntheses and biological evaluation of the first anti‐protozoa imidazole N ‐oxide benzimidazole their derivatives are reported. They were tested in vitro against two different protozoa, Trypanosoma cruzi Trichomonas vaginalis . Derivative 7c , ethyl‐1‐( i ‐butyloxycarbonyloxy)‐6‐nitrobenzimid‐azole‐2‐carboxylate, displayed activity on both protozoa. Lipophilicity redox potential experimentally determined order to study relationship with compounds. These properties well related...
Due to the increasing use of nanometric cerium oxide in applications, concerns about toxicity these particles have been raised and resulted a large number studies. We report here on interactions between 7 nm anionically charged living mammalian cells. By modification particle coating including low-molecular weight ligands polymers, two generic behaviours are compared: coated with citrate ions that precipitate biofluids poly(acrylic acid) stable remain nanometric. find nanoceria covered both...
Metal-assisted chemical etching (MACE) has emerged as an effective method to fabricate high aspect ratio nanostructures. This requires a catalytic mask that is generally composed of metal. Here, we challenge the general view catalyst needs be metal by introducing oxide-assisted (OACE). We perform with oxides such RuO2 and IrO2 transposing materials used in electrocatalysis nanofabrication. These can solution-processed polymers exhibiting similar capabilities metals for MACE. Nanopatterned...
2D assemblies of resonant dielectric particles constitute promising materials for the next generation photonic devices, thanks to their low optical losses and intense electromagnetic response. However, bottom‐up synthesis methods present many difficulties when targeting metasurface applications, particularly due high degree positional disorder size dispersion particles. This work presents fabrication core–shell silicon@silica with multipolar resonances in visible near‐infrared. These are...
Silicon nanoparticles are converted into multimetallic silicide by using molten salts as liquid reaction media under dynamic vacuum. They deliver highly efficient electrocatalysts for alkaline water oxidation.
Despite intriguing optical, magnetic, and redox properties, inorganic materials containing pentavalent manganese (MnV) are rare could never be designed as shape-controlled crystals, which limits the ability to tune properties. Herein, we explore alkali hydroxide mixtures with controlled water content, namely, hydrofluxes, demonstrate phase, shape, nanostructure control of Mn(V) oxides. We speciation among KSrMnVO4, Sr5(MnVO4)3OH, SrMnIVO3 strontium content nature cation salt. then provide...
Due to the increasing use of nanometric cerium oxide in applications, concerns about toxicity these particles have been raised and resulted a large number investigations. We report here on interactions between 7 nm anionically charged living mammalian cells. By modification particle coating including low-molecular weight ligands polymers, two generic behaviors are compared: coated with citrate ions that precipitate biofluids poly(acrylic acid) stable remain nanometric. find nanoceria covered...
Inorganic nanomaterials and particles with enhanced optical, mechanical or magnetic attributes are currently being developed for a wide range of applications. Safety issues have been formulated however concerning their potential cyto- genotoxicity. For in vivo vitro experimentations, recent developments heightened the need simple facile methods to measure amount nanoparticles taken up by cells tissues. In this work, we present rapid highly sensitive method quantifying uptake iron oxide...
Magnetic cobalt ferrite/silica microparticles having both an original morphology and anisotropic nanostructure are synthesized through the use of external magnetic field nanoparticles characterized by a high anisotropy. The association these two factors implies that ESE (emulsion solvent evaporation) sol-gel method employed here allows preparation silica microellipsoids containing aggregated in large chains. It is clearly shown without this combination, microspheres isotropic distribution...
Despite intriguing optical, magnetic, and redox properties, inorganic materials containing pentavalent manganese (Mn5+) are rare could never be designed as shape-controlled crystals, which limits the ability to tune properties. Herein, we explore alkali hydroxide mixtures with controlled water content, namely hydrofluxes, demonstrate phase, shape, nanostructure control of Mn(V) oxides. We speciation among KSrMnVO4, Sr5(MnVO4)3OH, SrMnIVO3 strontium nature cation salt. then provide evidence...
As a contribution to the search of antiparasitic activity in plants from Panama, total 37 extracts obtained 14 species were assessed against Trypanosoma cruzi (Trypanosomatidae), Trichomonas vaginalis (Trichomonadidae), and Heligmosomoides polygyrus (Heligmosomidae). Also, cytotoxicity macrophages was determined, order discard, among active extracts, those cytotoxic mammalian cells. Tripanocidal performed by colorimetric method using tetrazolium salt MTT, assays on T. counting viable...
Here, we exercise nanoscale control over the assembly of highly anisotropic silica helices using convective flow by physical properties occurring during evaporation-induced self-assembly. Organizing and patterning such chiral elongated objects large surfaces in a controllable reproducible fashion are challenging but desirable to optimize performance biomimetic structures, nanosensors (mechanical helices), or optical materials (chiral have asymmetric interactions with light as absorption is...
Abstract Manganite perovskite oxides exhibit a wide range of properties relevant for catalysis, energy conversion and spintronics. Such behaviors can be deeply modified at the nanoscale where confinement surface effects may prevail. Interesting could then emerge from manganite nanocrystals, although their synthesis remains challenge. The present study reports versatile nanocrystals by using molten salts as high temperature liquids in 600–750 °C range. Through X‐ray diffraction, photoelectron...
In this work we describe the external morphology and shell cross section of eggs three species Brazilian Eulimnadia: E. geayi, colombiensis magdalensis. these species, sections show variation vesicle size strut thickness in alveolar layer also possible presence hollows. With new records, increase total number known Eulimnadia to four, due different egg structures. All four were already reported from Venezuela, suggesting that have relatively wide distributions a lower tendency for endemism...
Nanostructuring boron-rich materials should significantly impact their thermal and electrical transport properties. Nonetheless, nanostructured monoliths of such could not be achieved in the 10 nm range so far, because large temperatures required to synthesize produce compounds. Such a nanostructuration may have important consequences for achieving trade-off between enhanced low conductivity materials, which are among few enabling thermoelectric power generation above 1000 K thanks...