Publication
Mapping Electrochemical Heterogeneity at Gold Surfaces: A Second Harmonic Imaging Study
Publications associées (33)
Mapping of Chemical Heterogeneity at Surfaces with High-Throughput Wide-Field Second Harmonic Microscopy
Many industrial processes are based on electrochemical reactions using engineered electrocatalysts. However, the current lack of theoretical knowledge obscures efforts to maximize catalysts' efficiency, and the optimization process is mostly empirical. To ...
EPFL2020Probing charge transfer processes at p-GaAs electrodes under weak optical excitation
Jean-Philippe Ansermet, Christophe Roussel, Felix Blumenschein, Mika Antero Tamski
The p-GaAs photocathode/acetonitrile interface was characterised in the dark and with tens of mu W/cm(2) laser powers at 830 nm wavelength, using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Two redox mediators were used that p ...
2019Mixed gold and platinum nanostructured layers for all-solid-state ion sensors
Giovanni De Micheli, Sandro Carrara, Irene Taurino, Danilo Demarchi, Francesca Criscuolo, Lucia Lobello
The great interest in portable and wearable monitoring systems has promoted in recent years a major expansion of all-solid-state Ion-Selective Electrodes (ISEs). Nanostructured Solid-Contacts (SCs) have shown a promising potential in order to eliminate the ...
IEEE2018Influence of the Adsorption of Phycocyanin on the Performance in DSS Cells: and Electrochemical and QCM Evaluation
Michael Graetzel, Jean-David Décoppet, Thomas Moehl
The influence of some coadsorbents and different pH values on the efficiency of DSS cells assembled with phycocyanin was evaluated using quartz crystal microbalance (QCM) and electrochemical techniques as impedance spectroscopy (EIS) and cyclic voltammetry ...
2016Ferrocene-Based Tetradentate Schiff Bases as Supporting Ligands in Uranium Chemistry
Marinella Mazzanti, Lucile Sylvie Danielle Chatelain
Uranyl(VI), uranyl(V), and uranium(IV) complexes supported by ferrocene-based tetradentate Schiff-base ligands were synthesized, and their solid-state and solution structures were determined. The redox properties of all complexes were investigated by cycli ...
American Chemical Society2015Cathodic pretreatment improves the resistance of boron-doped diamond electrodes to dopamine fouling
Martinus Gijs, Raphaël Etienne Jean Trouillon
The resistance of cathodically and anodically treated boron-doped diamond electrodes to dopamine fouling was investigated. It was found, using cyclic voltammetry and electrochemical impedance spectroscopy, that the cathodic preparation offers an increased ...
Elsevier2014Ultrafast Population Dynamics of Surface-Active Dyes during Electrochemically Controlled Ion Transfer across a Liquid|Liquid Interface
Hubert Girault, Astrid Johana Olaya Avendano, Pierre-François Marie Brevet, Evgeny Smirnov
We present for the first time experimental measurements on the ultrafast population dynamics of the model surface-active dye methyl orange (MO) during its ion transfer across the water|1,2-dichloroethane interface by using time-resolved surface second harm ...
Amer Chemical Soc2014Arene ruthenium complexes with phosphinoferrocene amino acid conjugates: Synthesis, characterization and cytotoxicity
Paul Joseph Dyson, Olivier Pierre Zava
A series of heterodinuclear p-cymene ruthenium ferrocene complexes, [(eta(6)-p-MeC6H4Pri)RuCl2(Ph(2)Pfc-CONHRCO2Me-kappa P)] (R = (S)-Me: 6, R = (S)-CHMe2: 7, R = (S)-CH2OMe: 8, R = (S)-CH2SMe: 9, R = (S)-CH2CH2CO2Me: 10) have been synthesized from p-cymen ...
Elsevier Science Sa2013Study of Amyloid beta-Peptide (A beta 12-28-Cys) Interactions with Congo Red and beta-Sheet Breaker Peptides Using Electrochemical Impedance Spectroscopy
Hubert Girault, Raheleh Partovi Nia
A surface-based approach is presented to study the interactions of A beta 12-28-Cys assembled on gold surfaces with Congo red (CR) and a beta-sheet breaker (BSB) peptide. The various aspects of the peptide film have been examined using different electroche ...
American Chemical Society2012Evaluation of Gibbs Energy of Dioxouranium Transfer at an Electrified Liquid vertical bar Liquid Interface Supported on a Microhole
Hubert Girault, Astrid Johana Olaya Avendano, Manuel Alejandro Méndez Agudelo, Thomas James Stockmann, Zhifeng Ding
Herein is reported the determination of the Gibbs energy of dioxouranium (UO22+) transfer across an interface between two immiscible electrolytic solutions (ITIES), water and 1,2-dichloroethane, that was supported at a 25 mu m diameter microhole, by means ...
2011