A5078624766- Electrochemical Analysis and Applications
- Electrochemical sensors and biosensors
- Analytical Chemistry and Sensors
- Mesoporous Materials and Catalysis
- Microbial Fuel Cells and Bioremediation
- Force Microscopy Techniques and Applications
- Advanced biosensing and bioanalysis techniques
- Conducting polymers and applications
- Electrocatalysts for Energy Conversion
- Supercapacitor Materials and Fabrication
- Advanced battery technologies research
- Enzyme Catalysis and Immobilization
- Molecular Junctions and Nanostructures
- Advanced Chemical Sensor Technologies
- Polyoxometalates: Synthesis and Applications
- Gas Sensing Nanomaterials and Sensors
- Fuel Cells and Related Materials
- Corrosion Behavior and Inhibition
- Ammonia Synthesis and Nitrogen Reduction
- Muon and positron interactions and applications
- CO2 Reduction Techniques and Catalysts
- Membrane-based Ion Separation Techniques
- Wastewater Treatment and Nitrogen Removal
- Covalent Organic Framework Applications
- Microfluidic and Capillary Electrophoresis Applications
Laboratoire de Chimie Physique et Microbiologie pour l'Environnement
2016-2025
Université de Lorraine
2016-2025
Centre National de la Recherche Scientifique
2016-2025
Laboratoire d'Étude des Microstructures et de Mécanique des Matériaux
2024
Laboratoire de Chimie Moléculaire
2021
GTx (United States)
2012
École Nationale Supérieure de Chimie, de Biologie et de Physique
2012
Institut des Sciences Moléculaires
2012
Université de Bordeaux
2012
Centre Hospitalier Régional et Universitaire de Nancy
2011
Five different ordered mesoporous silica samples displaying various pore sizes and structures (two small-pore MCM-41, two large-pore one MCM-48) amorphous gel have been grafted with either aminopropyl or mercaptopropyl groups. The resulting aminopropyl-grafted silicas (APS) mercaptopropyl-grafted (MPS) studied in solution via protonation of APS metal ion binding on both MPS. Special attention was given to characterize the accessibility sites speed at which reactants are reaching these...
Highly ordered and vertically oriented mesoporous silica films can be generated by electro-assisted self-assembly (EASA). The method involves the electrogeneration of hydroxide ions at an electrode surface immersed in hydrolyzed sol solution (containing typically tetraethoxysilane, TEOS, cetyltrimethylammonium bromide, CTAB) order to catalyze polycondensation precursors hexagonally packed one-dimensional channels that grow perpendicularly support. Vertically aligned mesostructures have been...
Ellipso-porosimetry and electrochemical techniques were used to characterize porosity molecular transport into mesostructured porous silica thin films displaying various structures. The have been prepared by the evaporation-induced self-assembly (EISA) method using cetyltrimethylammonium bromide (CTAB) as template. According previous investigations, structure of film can be controlled fine adjustment CTAB concentration relative humidity during dip-coating process. Films p6m (2D hexagonal),...
The speed at which selected reactants are reaching active sites grafted on porous silica gels of various nature and porosity was evaluated using some model systems: protonation aminopropyl-grafted (APS), mercury(II) binding mercaptopropyl-grafted (MPS), accumulation copper(II) APS. Data were obtained from batch experiments, by monitoring the consumption reactant in solutions containing solid phases as dispersed particles (average size: 60−150 μm). Various solids studied, with pore diameter...
Covalent bonding of (2,2′-bipyridyl) (pentamethylcyclopentadienyl)-rhodium complex at the surface a carbon-based porous electrode was achieved by combining diazonium electrografting, Huisgen cycloaddition, and metal complexation. The immobilized catalyst applied to electrochemical regeneration reduced form nicotinamide adenine dinucleotide (NADH). different steps functionalization were characterized X-ray photoelectron spectroscopy electrochemistry. Faradaic efficiency NADH 87%. chemical...
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We have recently reported the possible fabrication of highly ordered mesoporous silica thin films with mesopore channels oriented perpendicularly to underlying substrate, by means novel electroassisted self-assembly (EASA) method (Nature Mater. 6, 602 (2007)). Such deposited on an electrode surface can be great interest in sensing applications if one could introduce organo-functional groups likely interact target analytes a regular environment ensuring accessibility and fast mass transfer...
Abstract This review (239 references) is dealing with the use of mesoporous materials in field electrochemical enzymatic biosensors. After a brief discussion on interest for biosensing, presentation various types inorganic and organic‐inorganic hybrid mesostructures used to date elaboration bioelectrodes given main bioelectrode configurations are described. The biosensor applications then summarized basis comprehensive table some representative illustrations. detection schemes developed...
Surfactant-templated mesoporous silica thin films can be deposited onto solid electrode surfaces by electrochemically assisted self-assembly (EASA). The method involves a cathodically triggered of cationic surfactants (cetyltrimethyl ammonium bromide, CTAB) and local pH increase leading to the polycondensation precursors (i.e., tetraethoxysilane, alone or in presence (3-mercaptopropyl)trimethoxysilane (MPTMS)) concomitant growth ordered organosilica film. present work shows that EASA applied...
Abstract This work reports the enhanced response of electrodes modified with ordered mesoporous silica‐based materials, as compared to corresponding amorphous in case open‐circuit accumulation and voltammetric detection a target analyte. Several porous silica samples grafted either thiol or ammonium groups, displaying high surface areas various structural characteristics different pore sizes, have been examined respect their ability concentrate Hg II species. Better accessibility binding...
The reemission yield of ortho-positronium (o-Ps) into vacuum outside mesoporous silica films on glass is measured in reflection mode with a specially designed lifetime (LT) spectrometer. Values as high 40% are found. intensity the 142ns LT recorded function depth. depth profiling correlated to 2γ and 3γ energy ones determine annihilation characteristics inside films. Positron capped used pore size. For first time, set consistent fingerprints for positronium annihilation, o-Ps vacuum, size,...
In this work, we describe a versatile approach to generate highly methylated mesoporous silica films exhibiting hexagonally-packed one-dimensional mesochannels oriented uniquely perpendicular the underlying support. It involves electro-assisted self-assembly (EASA) of tetraethoxysilane (TEOS) and methyltriethoxysilane (MTES) with cetyltrimethylammonium bromide (CTAB) under potential control. Transmission electron microscopy grazing-incidence X-ray diffraction indicate that high level...
We fabricated an electrochemical molecularly imprinted polymer (MIP) chemosensor for rapid identification and quantification of E. coli strain using 2-aminophenyl boronic acid as the functional monomer. This is a modified Gram-negative Escherichia bacterium, ordinary human gut component. The strongly interacts with because porous flexible polymers cell wall. SEM imaging showed that bacteria template was partially entrapped within polymeric matrix in single step. Moreover, this confirmed K-12...
New hybrid inorganic–organic materials displaying both an ordered mesoporous structure and spherical morphology have been synthesised by co-condensation of tetraethoxysilane organoalkoxysilanes in water–ethanol solution containing ammonia the presence surfactant as templating agent.