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Hubert Girault

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Publications associées (428)

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Print-light-synthesis of electrocatalytically active gas diffusion electrodes for fuel cell applications

Hubert Girault, Kumar Varoon Agrawal, Luc Sébastien Bondaz

The present work reports a simple approach to manufacture electrocatalytically active gas diffusion electrodes (GDEs) in two steps: (i) inkjet printing and (ii) flash light irradiation from a xenon flash lamp, a process called Print-light-synthesis (PLS). ...

Royal Society of Chemistry2025

Phosphorylation of alpha-Synuclein at Y125 and S129 Alters Its Metal Binding Properties: Implications for Understanding the Role of alpha-Synuclein in the Pathogenesis of Parkinson's Disease and Related Disorders

Hubert Girault, Hilal Lashuel, Michel Prudent, Bruno Claude Daniel Fauvet, Yu Lu

alpha-Synuclein (alpha-syn) is a 140-amino acid protein that plays a central role in the pathogenesis of Parkinson's disease (PD) and other synucleinopathies. However, the molecular determinants that are responsible for triggering and/or propagating alpha- ...

American Chemical Society2011

Floating conductive catalytic nano-rafts at soft interfaces for hydrogen evolution

Hubert Girault, Micheal Diarmaid Scanlon

Mo2C nanowires and composites of Mo2C nanoparticles formed on multiwalled carbon nanotubes (Mo2C/CNT) were developed as advanced catalysts for hydrogen evolution at a polarised water–1,2-dichloroethane interface. Each catalyst acts as a catalytic nano-raft ...

Royal Soc Chemistry2013

REDOX FLOW BATTERY FOR HYDROGEN GENERATION

Hubert Girault, Christos Comninellis, Véronique Amstutz, Kathryn Ellen Toghill

The present invention combines the storage capacity of redox flow batteries and the production of hydrogen and other products of chemical redox reactions. The redox couple of each electrolyte is chemically regenerated on a specific catalyst bed 11, replaci ...

2013

Macroscopic indicators of fault diagnosis and ageing in electrochemical double layer capacitors

Hubert Girault, Mario Paolone, Véronique Amstutz, Dimitri Torregrossa, Kathryn Ellen Toghill

The ageing behaviour of electric double layer (EDLC) supercapacitors during over-temperature and over-voltage stresses is described. Specific experimental tests were carried out in order to reproduce, under laboratory controlled conditions, the above-menti ...

2015

A Kinetic Model for Adosorption and Transfer of Ionic Species at Polarized Liquid|Liquid Interfaces as Studied by Potential Modulated Fluorescence Spectroscopy

Hubert Girault

Fundamental expressions for analyzing potential modulated fluorescence (PMF) responses were derived within the framework of a phenomenological model for adsorption and transfer of ionic species across polarized liquid|liquid interfaces. For small periodic ...

2001

Component-resolved diagnostic of cow’s milk allergy by immunoaffinity capillary electrophoresis – matrix assisted laser desorption/ionization mass spectrometry

Hubert Girault, Natalia Gasilova

Component-resolved diagnostic (CRD) of cow’s milk allergy has been performed using immunoaffinity capillary electrophoresis (IACE) coupled with matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS). First, total IgE quantification in the ...

Amer Chemical Soc2014

Prussian Blue Analogue-Sodium-Vanadium Hexacyanoferrate as a Cathode Material for Na-Ion Batteries

Hubert Girault, Emad Oveisi, Dominika Baster

Sodium-ion (Na-ion) batteries have been attracting great interest because of a wide range of potential applications and sodium abundance. Yet, the performance of Na-ion electrode materials needs improvement to be able to compete with lithium-ion electrode ...

AMER CHEMICAL SOC2021

Nanoporous molybdenum carbide wires as an active electrocatalyst towards the oxygen reduction reaction

Hubert Girault, Micheal Diarmaid Scanlon

A non-precious metal electrocatalyst has been developed for the oxygen reduction reaction based on nanoporous molybdenum carbide (nano-Mo2C) wires through a facile calcination of sub-nanometer periodic organic–inorganic hybrid nanowires. The highly dispers ...

Royal Soc Chemistry2014

Efficiency improvement of an all-vanadium redox flow battery by harvesting low-grade heat

Hubert Girault, Alberto Battistel, Christopher Raymond Dennison, Danick Reynard

Redox flow batteries (RFBs) are rugged systems, which can withstand several thousand cycles and last many years. However, they suffer from low energy density, low power density, and low efficiency. Integrating a Thermally Regenerative Electrochemical Cycle ...

2018

Antioxidant Promotion of Tyrosine Nitration in the Presence of Copper(II)

Hubert Girault, Liang Qiao

Copper(II) is known to catalyze the generation of reactive nitrogen species in the presence of hydrogen peroxide, nitrite or nitric oxide, leading to tyrosine nitration, a biomarker for free radical species associated diseases. Here, we find that biologica ...

Royal Society of Chemistry2013

Catalysis of water oxidation in acetonitrile by iridium oxide nanoparticles

Hubert Girault, Jonnathan Cesar Hidalgo Acosta, Heron Vrubel, Manuel Alejandro Méndez Agudelo, Micheal Diarmaid Scanlon, Véronique Amstutz

Water oxidation catalysed by iridium oxide nanoparticles (IrO2 NPs) in water–acetonitrile mixtures using [RuIII(bpy)3]3+ as oxidant was studied as a function of the water content, the acidity of the reaction media and the catalyst concentration. It was obs ...

2015

Detection of bacteria

Hubert Girault, Andreas Stephan Lesch, Horst Pick, Milica Jovic, Yingdi Zhu

A method for bacteria detection and the assessment of the antimicrobial susceptibility profile uses a bacterial viability assay based on combining a highly efficient affinity bacteria enrichment/ separation with an electrochemical redox interrogation measu ...

2019

Simultaneous local sensing of two chemical properties with dual soft probe scanning electrochemical microscopy

Hubert Girault, Andreas Stephan Lesch

A new method for the rapid and economic fabrication of dual soft microelectrodes for Soft-Probe-Scanning electrochemical microscopy (Soft-Probe-SECM) and their use for the simultaneous local detection of locally generated species is presented. The process ...

PERGAMON-ELSEVIER SCIENCE LTD2023

Electrochemical push-pull probe: from scanning electrochemical microscopy (SECM) to multimodal altering of cell microenvironment

Hubert Girault, Andreas Stephan Lesch, Fernando Cortes Salazar, Alexandra Bondarenko, Dmitry Momotenko

To understand biological processes at the cellular level, a general approach is to alter the cells’ environment and to study their chemical responses. Herein, we present the implementation of an electrochemical push-pull probe, which combines a microfluidi ...

Amer Chemical Soc2015

Inkjet Printed Nanohydrogel Coated Carbon Nanotubes Electrodes For Matrix Independent Sensing

Hubert Girault, Andreas Stephan Lesch, Fernando Cortes Salazar, Véronique Amstutz

Polyacrylamide (PA) based hydrogels are used in several applications including polyacrylamide gel electrophoresis and sensing devices. Homogeneous and compact PA films can be prepared based on chemical or photopolymerization processes. However, the accurat ...

2015

Self-Healing Gold Mirrors and Filters at Liquid-Liquid Interfaces

Hubert Girault, Pekka Eero Peljo, Frédéric Gumy, Evgeny Smirnov, Micheal Diarmaid Scanlon

The optical and morphological properties of lustrous metal self-healing liquid-like nanofilms were systematically studied towards different applications (e.g., optical mirrors or filters). These nanofilms were formed by a one-step self-assembly methodology ...

Royal Soc Chemistry2016

Visible-Light-Driven Water Oxidation on Self-Assembled Metal-Free Organic@Carbon Junctions at Neutral pH

Julieta Soledad Riva, Hubert Girault, Astrid Johana Olaya Avendano, Wanderson Oliveira Da Silva, Dominika Baster, François Maximilien Nathanaël Pichard

Sustainable water oxidation requires low-cost, stable, and efficient redox couples, photosensitizers, and catalysts. Here, we introduce the in situ self-assembly of metal-atom-free organic-based semiconductive structures on the surface of carbon supports. ...

AMER CHEMICAL SOC2021

Soft Electrochemical Probes for Mapping the Distribution of Biomarkers and Injected Nanomaterials in Animal and Human Tissues

Hubert Girault, Andreas Stephan Lesch, Horst Pick, Tzu-En Lin, Yu Lu

Monitoring biomarkers and injected theranostic nanomaterials in tissues and organs plays a pivotal role in numerous medical applications ranging from cancer diagnostics to drug delivery. Scanning electrochemical microscopy has been demonstrated as a powerf ...

Wiley-Blackwell2017

MALDI Detection of Exosomes: A Potential Tool for Cancer Studies

Hubert Girault, Horst Pick, Natalia Gasilova, Tzu-En Lin, Yingdi Zhu

Matrix-assisted laser desorption ionization time-of-flight mass spectrometry is used to detect intact whole exosomes, yielding exosomal fingerprints within minutes. This rapid exosome detection approach is proposed as a potential tool for cancer studies. M ...

2019