A5052002647- Electrochemical sensors and biosensors
- Electrochemical Analysis and Applications
- Electrocatalysts for Energy Conversion
- Metalloenzymes and iron-sulfur proteins
- Conducting polymers and applications
- Advanced battery technologies research
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Advanced biosensing and bioanalysis techniques
- CO2 Reduction Techniques and Catalysts
- Molecular Junctions and Nanostructures
- Metal-Catalyzed Oxygenation Mechanisms
- Metal complexes synthesis and properties
- Anaerobic Digestion and Biogas Production
- Marine and Offshore Engineering Studies
- Advanced Photocatalysis Techniques
- Biotin and Related Studies
- Microbial Fuel Cells and Bioremediation
- Neuroscience and Neural Engineering
- Particle accelerators and beam dynamics
- Graphene and Nanomaterials Applications
- Enzyme Catalysis and Immobilization
- Asymmetric Hydrogenation and Catalysis
- Analytical Chemistry and Sensors
- Carbon Nanotubes in Composites
Université Grenoble Alpes
2016-2025
Département de Chimie Moléculaire
2016-2025
Centre National de la Recherche Scientifique
2015-2024
Biomécanique et Bioingénierie
2021
Arrowhead Regional Medical Center
2020
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2008-2020
CEA Grenoble
2020
Laboratoire Chimie Electrochimie Moléculaires et Chimie Analytique
2005-2017
Université Joseph Fourier
2010-2017
Université de Bretagne Occidentale
2005-2014
Electrolysis at Nickel One drawback of solar and wind power is the need for an efficient storage system to release accumulated energy when neither source readily available (during still nights, example). Hydrogen derived from electrolysis water potentially a useful medium this purpose, but catalyzing interconversion efficiently large scale would currently require substantial amount scarce precious metal platinum. An alternative approach be mimic natural enzymatic reactions, which accomplish...
Enzymatic fuel cells use enzymes to produce energy from bioavailable substrates. However, such biofuel are limited by the difficult electrical wiring of electrode. Here we show efficient in a conductive pure carbon nanotube matrix for fabrication glucose cell (GBFC). Glucose oxidase and laccase were respectively incorporated disks mechanical compression. The characterization each bioelectrode shows an open circuit potential corresponding redox respective enzymes, high current densities...
We describe the first implanted glucose biofuel cell (GBFC) that is capable of generating sufficient power from a mammal's body fluids to act as sole source for electronic devices. This GBFC based on carbon nanotube/enzyme electrodes, which utilize oxidase oxidation and laccase dioxygen reduction. The GBFC, in abdominal cavity rat, produces an average open-circuit voltage 0.57 V. delivered output 38.7 μW, corresponded density 193.5 μW cm−2 volumetric 161 mL−1. demonstrate one single...
This review summarizes different approaches and breakthroughs of implantable fuel cells from the first noble-metal glucose fuels to recent use biocatalysts for selective oxidation oxygen reduction inside mammal's bodies.
Go with the CO: The functionalization of multiwalled carbon nanotubes molecular complexes through π–π stacking produces robust, noble-metal-free electrocatalytic nanomaterials for H2 evolution and uptake. catalysts are compatible conditions encountered in classical proton-exchange membrane devices tolerant common pollutant CO, thus offering significant advantages over traditional Pt-based catalysts. Detailed facts importance to specialist readers published as "Supporting Information". Such...
We report the design of a novel glucose/O2 biofuel cell (GBFC) integrating carbon nanotube-based 3D bioelectrodes and using naphthoquinone-mediated oxidation glucose by oxidase direct oxygen reduction laccase. The GBFCs exhibit high open circuit voltages 0.76 V, current densities 4.47 mA cm−2, maximum power output 1.54 mW 1.92 mL−1 2.67 g−1. GBFC is able to constantly deliver 0.56 h cm−2 under discharge at 0.5 showing among best in vitro performances for GBFC. Using charge pump, finally...
An original supercapacitor/biofuel cell hybrid system based on compression of enzyme–carbon nanotubes enables high power discharge cycles with autonomous reloading.
This paper details the electrochemical investigation of a deuteroporphyrin dimethylester (DPDE) rhodium(III) ((DPDE)RhIII) complex, immobilized within MWCNT/Nafion electrode, and its integration into molecular catalysis-based glucose fuel cell. The domains present (DPDE)RhI, (DPDE)Rh–H, (DPDE)RhII, (DPDE)RhIII were characterized by surface electrochemistry performed at broad pH range. Pourbaix diagrams (plots E1/2 vs pH) support stability (DPDE)RhII intermediate predominance two-electron...
Strategies to maximize direct electron transfer (DET) between redox enzymes and electrodes include the oriented immobilization of onto an electroactive surface. Here, we present a strategy for achieving controlled orientation fungal laccase on carbon nanotube-based electrodes. A homogeneous population pyrene-modified is obtained via reductive amination unique surface accessible lysine residue engineered near T1 copper center enzyme. Immobilization site-specific functionalized enzyme achieved...
Abstract A biomimetic nickel bis‐diphosphine complex incorporating the amino acid arginine in outer coordination sphere was immobilized on modified carbon nanotubes (CNTs) through electrostatic interactions. The functionalized redox nanomaterial exhibits reversible electrocatalytic activity for H 2 /2 + interconversion from pH 0 to 9, with catalytic preference oxidation at all values. high of over a wide range allows us integrate this bio‐inspired either an enzymatic fuel cell together...
Enzymatic biofuel cells generate electrical energy from renewable sources with high selectivity and environmental benefits compared to lithium batteries traditional fuel cells. For enzymatic become competitive, major improvements in electrode design are required enhance power density, voltage output, stability. Here we have developed a freestanding paper cell comprising redox molecule embedded multiwalled carbon nanotube papers for wiring of enzymes. The drop-coat one-pot fabrication methods...
The efficient immobilization and orientation of bilirubin oxidase from Myrothecium verrucaria on multi-walled carbon nanotube electrodes by using π-stacked porphyrins as a direct electron-transfer promoter is reported. By comparing the use different types porphyrin, rational effect porphyrin structure both enzyme demonstrated. best performances were obtained for protoporphyrin IX, which natural precursor bilirubin. These exhibit full enzyme, confirmed observable non-catalytic redox system...
Due to the lack of a valid approach in design electrochemical interfaces modified with enzymes for efficient catalysis, many oxidoreductases are still not addressed by electrochemistry. We report this work an in-depth study interactions between two different bilirubin oxidases, (from fungus Myrothecium verrucaria and from bacterium Bacillus pumilus), catalysts oxygen reduction, carbon nanotubes bearing various surface charges (pristine, carboxylic-, pyrene-methylamine-functionalized). The...
Reaction of [Fe2{μ-S(CH2)3S}(CO)6] (1) at room temperature with the N-heterocyclic carbenes IMe-(CH2)2-L (IMe = 1-methylimidazol-2-ylidene, L NMe2, SMe) afforded pentacarbonyl carbene derivatives [Fe2{μ-S(CH2)3S}(CO)5{IMe-(CH2)2-NMe2}] (2a) and [Fe2{μ-S(CH2)3S}(CO)5{IMe-(CH2)2-SMe}] (2b). 1 IMe-CH2-IMe provided dimer [{Fe2(μ-S(CH2)3S)(CO)5}2{μ-(IMe-CH2-IMe)}] (3) together chelated bis-NHC complex [Fe2{μ-S(CH2)3S}(CO)4{IMe-CH2-IMe}] (4a) as major product. The analogous reaction IMe-(CH2)2-IMe...
We report the functionalization of multi-walled carbon nanotube (MWCNT) electrodes by oxidative electropolymerization pyrrole monomers bearing pyrene and N-hydroxysuccinimide groups. Both polymers were applied to immobilization electrical wiring Trametes versicolor laccase via chemical grafting or non-covalent binding. A "pseudo" host–guest interaction polymerized with a hydrophobic cavity was used for oriented enzyme on MWCNT electrodes. The latter leads higher catalytic current oxygen...
A membraneless air-breathing hydrogen biofuel cell.
Horseradish peroxidase and glucose oxidase were immobilized on redox buckypapers modified by poly(pyrrole-concanavalin) for the electroreduction of oxygen into water.