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Hubert Girault

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Related publications (428)

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Gold Metal Liquid-Like Droplets

Hubert Girault, Heron Vrubel, Manuel Alejandro Méndez Agudelo, Evgeny Smirnov, Dmitry Momotenko, Micheal Diarmaid Scanlon

Simple methods to self-assemble coatings and films encompassing nanoparticles are highly desirable in many practical scenarios, yet scarcely any examples of simple, robust approaches to coat macroscopic droplets with continuous, thick (multilayer), reflect ...

Amer Chemical Soc2014

Enhanced reactivity of water clusters towards oxidation in water/acetonitrile mixtures as studied by voltammetry at IrO2 nanoparticle modified FTO electrodes

Hubert Girault, Jonnathan Cesar Hidalgo Acosta, Pekka Eero Peljo, Manuel Alejandro Méndez Agudelo, Micheal Diarmaid Scanlon

The water oxidation process in acidified water/acetonitrile mixtures was studied by cyclic voltammetry using fluorinated tin oxide (FTO) electrodes modified layer-by-layer with deposited bilayers of positively charged poly(diallyldimethylammonium chloride) ...

Wiley-V C H Verlag Gmbh2016

Electrochemical Aspects of Electrospray and Laser Desorption/Ionization for Mass Spectrometry

Hubert Girault, Liang Qiao, Mélanie Abonnenc

Soft-ionization methods, namely electrospray ionization and laser desorption/ionization, are widely used to transfer large molecules as intact gas-phase ions either from a solution or from a solid substrate. During both processes, in-source electrochemical ...

2010

Solar photo-Fenton and UV/H2O2 processes against the antidepressant Venlafaxine in urban wastewaters and human urine. Intermediates formation and biodegradability assessment

Hubert Girault, César Pulgarin, Luiz Felippe De Alencastro, Dominique Grandjean, Stefanos Giannakis, Milica Jovic, Idriss Hendaoui

In this work, the use of Advanced Oxidation Processes (AOPs) against the degradation of an emerging contaminant has been subjected under systematic investigation. The optimization of treatment of the anti- depressant drug Venlafaxine (VFA) was performed, u ...

Elsevier Science Sa2017

Transfer and adsorption of 1-pyrene sulfonate at the water / 1,2-dichloroethane interface studied by potential modulated fluorescence spectroscopy

Hubert Girault

The transfer mechanism of 1-pyrene sulfonate anion (PSA−) across the polarized water 1,2-dichloroethane (DCE) interface was investigated by a combination of electrochemical techniques and potential modulated fluorescence (PMF) spectroscopy under total inte ...

Elsevier2002

Immobilized pH Gradient Gel Cell To Study the pH Dependence of Drug Lipophilicity

Hubert Girault, Christophe Roussel, Hoang-Trang Lam

An experimental setup to study the pH dependence of standard ion-transfer potentials at the water/NPOE interface is presented. The system is composed of a micro-hole generated by laser photoablation in a 12-μm polyethylene terephthalate film, the aqueous p ...

2006

Oxidative Print Light Synthesis Thin Film Deposition of Prussian Blue

Hubert Girault, Emad Oveisi, Mounir Driss Mensi, Victor Costa Bassetto, Wanderson Oliveira Da Silva, Dominika Baster

Prussian blue (PB) and Prussian blue analogues (PBAs) are commonly synthesized by conventional methods, such as chemical precipitation, thermal decomposition, and electrochemical deposition. Herein, we have successfully synthesized Prussian blue by oxidati ...

2020

Non-Precious Electrodes for Practical Alkaline Water Electrolysis

Hubert Girault, Alberto Battistel, Alejandro Nicolás Colli

Water electrolysis is a promising approach to hydrogen production from renewable energy sources. Alkaline water electrolyzers allow using non-noble and low-cost materials. An analysis of common assumptions and experimental conditions (low concentrations, l ...

2019

Banana split: biomass splitting with flash light irradiation

Hubert Girault, Bhawna Nagar, Wanderson Oliveira Da Silva

Biomass splitting into gases and solids using flash light irradiation is introduced as an efficient photo-thermal process to photo-pyrolyze dried natural biomass powders to valuable syngas and conductive porous carbon (biochar). The photo-thermal reactions ...

ROYAL SOC CHEMISTRY2022

Communication-Scanning Electrochemical Microscopy Analysis of Interleukin-6 in Oral Cancer

Hubert Girault, Ligang Wang, Sorour Darvishi

Scanning electrochemical microscopy (SECM) offers a highly sensitive and convenient approach for electrochemical mapping of interleukin-6 (IL-6), an oral cancer protein biomarker. In this study, we utilized the SECM to map the distribution of IL-6 for imag ...

ELECTROCHEMICAL SOC INC2020

Electrochemical potential window of battery electrolytes: the HOMO-LUMO misconception

Hubert Girault, Pekka Eero Peljo

A widespread misconception in the lithium ion battery literature is the equality of the energy difference of HOMO and LUMO of the solvent with the electrochemical stability window. HOMO and LUMO are concepts derived from approximated electronic structure t ...

2018

Proteolysis in microfluidic droplets: an approach to interface protein separation and peptide mass spectrometry

Hubert Girault, Liang Qiao

A versatile microreactor protocol based on microfluidic droplets has been developed for on-line protein digestion. Proteins separated by liquid chromatography are fractionated in water-in-oil droplets and digested in sequence. The microfluidic reactor acts ...

Royal Society of Chemistry2012

Immuno-affinity Amperometric Detection of Bacterial Infections

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

A combination of an immuno-affinity enrichment strategy and sensitive amperometric read-out was implemented in a point-of-care platform intended for bacterial infection analysis. Bacterial cells, selectively captured and enriched from complex matrices thro ...

Wiley-VCH Verlag GmbH2018

Electrochemical Pseudo-Titration of Water-Soluble Antioxidants

Hubert Girault, Andreas Stephan Lesch, Fernando Cortes Salazar

An amperometric test for the antioxidant power (AOP) of biological and food samples is presented. The gist of the method is to measure by linear sweep voltammetry the anodic current produced during the oxidation of the labile species present in the sample ...

Wiley-Blackwell2013

High-throughput scanning electrochemical microscopy brushing of strongly tilted and curved surfaces

Hubert Girault, Andreas Stephan Lesch, Fernando Cortes Salazar, Dmitry Momotenko, Gunther Wittstock

The feasibility of high-throughput scanning electrochemical microscopy (SECM) of strongly tilted (tilt angles ≤4°) and curved substrates (diameter of curvature ≥9 cm) is demonstrated by brushing them with a soft linear array of carbon microelectrodes. This ...

Elsevier2013

Assembling Ni-Fe Layered Double Hydroxide 2D Thin Films for Oxygen Evolution Electrodes

Hubert Girault, Andreas Stephan Lesch, Victor Costa Bassetto

Continuous hydrothermal flow synthesis (CHFS) of Ni-Fe layered double hydroxide (LDH) leads to waterborne dispersions of 2D nanoplatelets in the range of 10-50 nm in lateral size. Conversion of the as-synthesized LDH nanoplatelet dispersion into inkjet pri ...

AMER CHEMICAL SOC2020

SECM study of hydrogen photogeneration in a 1,2-dichloroethane | water biphasic system with decamethylruthenocene electron donor regeneration

Hubert Girault

This paper reports light driven hydrogen evolution reaction (HER) at 1,2-dichloroethane | water (DCE | W) interface using photoexcited decamethylruthenocene (DMRc) as electron donor. DMRc is in situ regenerated by electroreduction of its oxidized form (DMR ...

2018

A generalised model for dynamic photocurrent responses at dye-sensitised liquid|liquid interfaces

Hubert Girault, Nicolas Eugster

The heterogeneous photoinduced electron transfer involving dyes adsorbed at the interface between two immiscible electrolyte solutions and redox molecules located in the adjacent phase manifests itself as photocurrent responses under potentiostatic conditi ...

2005

Electroanalytical applications of ITIES – A review

Hubert Girault

Over the last decades, the interface between two immiscible electrolyte solutions (ITIES) attracted considerable attention of the scientific community due to their vast applications, such as extraction, catalysis, partition studies and sensing. The aim of ...

2024

Photonic Flash Synthesis of Mo2C/Graphene Electrocatalyst for the Hydrogen Evolution Reaction

Hubert Girault, Danick Reynard, Bhawna Nagar

Nowadays, molybdenum carbides (Mo2C) represent alternative electrocatalysts to noble metal for the hydrogen evolution reaction (HER). Here, a fast and simple process is proposed for the fabrication of Mo2C-based electrocatalysts on a carbon cloth substrate ...

AMER CHEMICAL SOC2021