Recherche

Afficher tous les résultats pour

Accueil

Personne

Hubert Girault

À propos
Confidentialité
Mentions légales

Graph Chatbot

Publications associées (430)

On-Chip Spyhole Mass Spectrometry for Droplet-Based Microfluidics

Hubert Girault, Liang Qiao, Natalia Gasilova, Qiuliyang Yu

For efficient coupling of droplet-based microfluidics with mass spectrometry (MS), a spyhole drilled on the top of a microchip is used to sample the passing droplets by electrostatic-spray ionization (ESTASI) MS. The technique involves placing an electrode ...

Wiley-VCH Verlag GmbH2014

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

An Efficient Drug Metabolism Strategy Based on Microsome-Mesoporous Organosilica Nanoreactors

Hubert Girault, Liang Qiao, Peng Zhang

A rapid and accurate in-vitro drug metabolism strategy has been proposed based on the design of a biomimetic nanoreactor composed of amino-functionalized periodic mesoporous organosilica (NH2-PMO) and microsomes. The amphiphilic and positive charged NH2-PM ...

Amer Chemical Soc2014

Renewable hydrogen generation from a dual-circuit redox flow battery

Christos Comninellis, Hubert Girault, Xile Hu, Véronique Amstutz, Heron Vrubel, Kathryn Ellen Toghill, Francis Powlesland

Redox flow batteries (RFBs) are particularly well suited for storing the intermittent excess supply of renewable electricity; so-called “junk” electricity. Conventional RFBs are charged and discharged electrochemically, with electricity stored as chemical ...

Royal Soc Chemistry2014

Highly sensitive detection of five typical fluoroquinolones in low-fat milk by field-enhanced sample injection based CE in bubble cell capillary

Hubert Girault, Liang Qiao, Natalia Gasilova, Yan Deng

Fluoroquinolones are a group of synthetic antibiotics with a broad activity spectrum against mycoplasma, gram-positive and gram-negative bacteria. Due to the extensive use of fluoroquinolones in farming and veterinary science, there is a constant need in t ...

Wiley-Blackwell2014

A nanoporous molybdenum carbide nanowire as an electrocatalyst for hydrogen evolution reaction

Hubert Girault, Xile Hu, Micheal Diarmaid Scanlon

A highly active and stable electrochemical catalyst of nanoporous molybdenum carbide nanowires (np-Mo2C NWs) has been developed for hydrogen evolution reaction (HER). The np-Mo2C NWs were synthesized simply by pyrolysis of a MoOx,/amine hybrid precursor wi ...

Royal Soc Chemistry2014

Rapid optimisation of a lactate biosensor design using soft probes scanning electrochemical microscopy

Hubert Girault, Fernando Cortes Salazar, Andreas Stephan Lesch

We report the mapping of biocatalytically active surfaces, particularly on an express search for optimal immobilization conditions of the enzyme lactate oxidase by means of scanning electrochemical microscopy (SECM). With this aim, soft stylus SECM probes ...

Elsevier2014

Understanding the Ageing Process, Recovering Phase and Fault Diagnosis of Electrochemical Double Layer Capacitors

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

This paper focuses on the description of the behavior of supercapacitors during over-temperature and over-voltage stresses and the consequent ageing processes. Specific physical evidences supporting the explanation of the experimental findings are provided ...

IEEE2014

Hydrogen and Hydrogen Peroxide Formation in Trifluorotoluene-Water Biphasic Systems

Hubert Girault, Jonnathan Cesar Hidalgo Acosta

Hydrogen or hydrogen peroxide can be generated in liquid-liquid biphasic systems, where the organic phase contains sufficiently strong electron donor (whose redox potential is lower than the potential of reversible hydrogen electrode). H2O2 generation with ...

Amer Chemical Soc2014

Electrostatic Spray Ionization Mass Spectrometry Imaging

Hubert Girault, Horst Vogel, Horst Pick, Liang Qiao, Elena Tobolkina, Andreas Stephan Lesch, Alexandra Bondarenko, Xiaoqin Zhong

Imaging samples on a surface by mass spectrometry (MS) requires the combination of MS detection with a scanning mode that enables localized desorption and ionization and/or detection of sample analytes with good spatial resolution. We have developed a new ...

Amer Chemical Soc2014

Mechanism of oxygen reduction by metallocenes near liquid|liquid interfaces

Hubert Girault, Haiqiang Deng, Thomas James Stockmann, Pekka Eero Peljo

The mechanism of the oxygen reduction reaction (ORR) at a liquid|liquid interface, employing ferrocene (Fc) derivatives – such as decamethylferrocene (DMFc) – as a lipophilic electron donor along with sulfuric acid as an aqueous proton source, was elucidat ...

Elsevier2014

Proteins/peptides purification by a three-well OFFGEL electrophoresis with immobilized ultra narrow pH gradient gels

Hubert Girault, Fernando Cortes Salazar, Liang Qiao, Elena Tobolkina

Purification and desalting of protein and peptide samples by a three-well OFFGEL electrophoresis with immobilized ultra narrow pH gradient gels is proposed as a fast preparative strategy for proteomics. The gist of this strategy is to separate the proteins ...

Royal Society of Chemistry2014

Scanning electrochemical microscopy determination of hydrogen flux at liquid|liquid interface with potentiometric probe

Hubert Girault

Scanning electrochemical microscopy potentiometric determination of local hydrogen concentration and its flux next to the liquid|liquid interface was demonstrated. This method is based on the shift of open circuit potential of Pt-based reversible hydrogen ...

Elsevier2014

Large scale inkjet-printing of carbon nanotubes electrodes for antioxidant assays in blood bags

Hubert Girault, Michel Prudent, Niels Erik Lion, Fernando Cortes Salazar, Andreas Stephan Lesch

Herein, we present the large scale fabrication of carbon nanotubes (CNT) electrodes supported on flexible polymeric sheets by subsequent multilayer inkjet printing of a silver layer for electrical connection, CNT layers as active electrode material and an ...

Elsevier2014

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

LSPR properties of metal nanoparticles adsorbed at a liquid–liquid interface

Hubert Girault, Pingping Fang

Unlike the solid–air and solid–liquid interfaces, the optical properties of metal nanoparticles adsorbed at the liquid–liquid interface have not been theoretically exploited to date. In this work, the three dimensional finite difference time domain (3D-FDT ...

Royal Soc Chemistry2013

A microchip emitter for solid phase extraction – gradient elution – mass spectrometry

Hubert Girault, Mohammad Reza Pourhaghighi, Liang Qiao, Dmitry Momotenko, Natalia Gasilova

A microchip electrospray emitter with a magnetic bead trap has been designed for solid phase extraction-gradient elution-mass spectrometry (SPE-GEMS). The goal of this method is the detection of analytes at low concentrations and it is here demonstrated us ...

American Chemical Society2013

Coupling Isoelectric Focusing Gel Electrophoresis to Mass Spectrometry by Electrostatic Spray Ionisation

Hubert Girault, Liang Qiao, Elena Tobolkina

Gel electrophoresis has been used for decades as a high-resolution separation technique for proteins and protein isomers, but limited in the coupling with MS because of low throughput and poor automaticity compared with LC-MS. In this work, we have develop ...

American Chemical Society2013

Conductive Gold Nanoparticle Mirrors at Liquid/Liquid Interfaces

Hubert Girault, Frédéric Gumy, Carlos Manuel De Melo Pereira, Fernando Cortes Salazar, Véronique Amstutz, Dmitry Momotenko, Haiqiang Deng, Pingping Fang, Micheal Diarmaid Scanlon

Gold nanoparticle (Au NP) mirrors, that exhibit both high reflectance and electrical conductance, were self-assembled at a [heptane + 1,2-dichloroethane]/water liquid/liquid interface. The highest reflectance, as observed experimentally and confirmed by fi ...

Amer Chemical Soc2013

Electrochemical As(III) Whole-Cell Based Biochip Sensor

Hubert Girault, Fernando Cortes Salazar

The development of a whole-cell based sensor for arsenite detection coupling biological engineering and electrochemical techniques is presented. This strategy takes advantage of the natural Escherichia coli resistance mechanism against toxic arsenic specie ...

Elsevier2013

Page 9 sur 22