Publications by Micheal Diarmaid Scanlon

Mechanistic study of the photo‐generation of hydrogen by decamethylruthenocene

Hubert Girault, Laurent Alexis Clément Vannay, Manuel Alejandro Méndez Agudelo, Heron Vrubel, Sunny Isaïe Maye, Micheal Diarmaid Scanlon, Pekka Eero Peljo, Lucie Josette Renée Rivier

Hydrogen evolution by decamethylruthenocene (Cp*2RuII) was studied in detail highlighting that metallocenes are capable of photo‐reducing hydrogen without the need of an additional sensitizer. Electrochemical, gas chromatographic and spectroscopic (UV/vis, ...

2019

Gold Nanofilms at Liquid–Liquid Interfaces: An Emerging Platform for Redox Electrocatalysis, Nanoplasmonic Sensors, and Electrovariable Optics

Thomas James Stockmann, Micheal Diarmaid Scanlon, Pekka Eero Peljo, Evgeny Smirnov

The functionality of liquid–liquid interfaces formed between two immiscible electrolyte solutions (ITIES) can be markedly enhanced by modification with supramolecular assemblies or solid nanomaterials. The focus of this Review is recent progress involving ...

2018

Simulations employing finite element method at liquid vertical bar liquid interfaces

Thomas James Stockmann, Micheal Diarmaid Scanlon, Pekka Eero Peljo

2018

Mediated water electrolysis in biphasic systems

Hubert Girault, Heron Vrubel, Micheal Diarmaid Scanlon, Pekka Eero Peljo, Lucie Josette Renée Rivier

The concept of efficient electrolysis by linking photoelectrochemical biphasic H2 evolution and water oxidation processes in the cathodic and anodic compartments of an H-cell, respectively, is introduced. Overpotentials at the cathode and anode are minimis ...

Royal Society of Chemistry2017

Photoproduction of Hydrogen by Decamethylruthenocene Combined with Electrochemical Recycling

Hubert Girault, Laurent Alexis Clément Vannay, Manuel Alejandro Méndez Agudelo, Grégoire Clément Gschwend, Micheal Diarmaid Scanlon, Pekka Eero Peljo, Lucie Josette Renée Rivier

The photoinduced hydrogen evolution reaction (HER) by decamethylruthenocene, Cp2RuII (Cp=C5Me5), is reported. The use of a metallocene to photoproduce hydrogen is presented as an alternative strategy to reduce protons without involving an additional phot ...

Wiley-Blackwell2017

Redox Electrocatalysis of Floating Nanoparticles: Determining Electrocatalytic Properties without the Influence of Solid Supports

Hubert Girault, Astrid Johana Olaya Avendano, Thomas James Stockmann, Micheal Diarmaid Scanlon, Pekka Eero Peljo, Evgeny Smirnov, Lucie Josette Renée Rivier

Redox electrocatalysis (catalysis of electron-transfer reactions by floating conductive particles) is discussed from the point-of-view of Fermi level equilibration, and an overall theoretical framework is given. Examples of redox electrocatalysis in soluti ...

2017

Gold Nanofilm Redox Catalysis for Oxygen Reduction at Soft Interfaces

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

Functionalization of a soft or liquid-liquid interface by a one gold nanoparticle thick “nanofilm” provides a conductive pathway to facilitate interfacial electron transfer from a lipophilic electron donor to a hydrophilic electron acceptor in a process kn ...

Elsevier2016

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

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

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

Boosting Water Oxidation Layer-by-Layer

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

Electrocatalysis of water oxidation was achieved using fluorinated tin oxide (FTO) electrodes modified with layer-by-layer deposited films consisting of bilayers of negatively charged citrate-stabilized IrO2 NPs and positively charged poly(diallyldimethyla ...

Royal Society of Chemistry2016

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

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

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

Decamethylruthenocene Hydride and Hydrogen Formation at Liquid|Liquid Interfaces

Hubert Girault, Manuel Alejandro Méndez Agudelo, Thomas James Stockmann, Micheal Diarmaid Scanlon, Pekka Eero Peljo, Lucie Josette Renée Rivier

The formation and the dissociation of metal hydrides are key steps within the hydrogen evolution reaction (HER) pathway for photochemical water splitting, but also impacts a wide range of other catalytic, industrial, and biochemical reactions. Herein, we d ...

American Chemical Society2015

Catalysis of water oxidation in acetonitrile by iridium oxide nanoparticles

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

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

Interfacial Redox Catalysis on Gold Nanofilms at Soft Interfaces

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

Soft or “liquid-liquid” interfaces were functionalized by half a monolayer of mirror-like nanofilms of gold nanoparticles using a precise interfacial microinjection method. The surface coverage of the nanofilm was characterized by ion transfer voltammetry. ...

Amer Chemical Soc2015

Charging and Discharging at the Nanoscale: Fermi Level Equilibration of Metallic Nanoparticles

Hubert Girault, Manuel Alejandro Méndez Agudelo, Micheal Diarmaid Scanlon, Pekka Eero Peljo, Evgeny Smirnov

The redox properties of metallic nanoparticles are discussed, in particular the relationships between excess charge, size and the Fermi level of the electrons. The redox potentials are derived using simple electrostatic models to provide a straightforward ...

Royal Soc Chemistry2015

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

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

Oxygen Reduction at Soft Interfaces Catalyzed by In Situ-Generated Reduced Graphene Oxide

Hubert Girault, Fernando Cortes Salazar, Véronique Amstutz, Haiqiang Deng, Micheal Diarmaid Scanlon

Face to face: Flakes of reduced graphene oxide, synthesized in situ at the liquid/liquid interface from a graphene-oxide precursor, are capable of catalyzing the biphasic reduction of protons to hydrogen peroxide in the presence of molecular oxygen and an ...

Wiley-V C H Verlag Gmbh2014

Photo-Ionic Cells: Two Solutions to Store Solar Energy and Generate Electricity on Demand

Hubert Girault, Manuel Alejandro Méndez Agudelo, Heron Vrubel, Micheal Diarmaid Scanlon, Pekka Eero Peljo

A solar energy conversion concept based on the photo-induced separation of a pair of redox species in a biphasic liquid cell is presented. The redox pair is subsequently discharged in an electrochemical flow cell to generate electricity. To illustrate this ...

Amer Chemical Soc2014

Fingerprinting the Tertiary Structure of Electroadsorbed Lysozyme at Soft Interfaces by Electrostatic Spray Ionization Mass Spectrometry

Hubert Girault, Liang Qiao, Micheal Diarmaid Scanlon

Lysozyme can be electrochemically detected after adsorption at an electrified gel-water interface. Ex-situ characterization by electrostatic spray ionization mass spectrometry provides insights into the interfacial detection mechanism by allowing changes t ...

Royal Society of Chemistry2014

Gold Metal Liquid-Like Droplets

Pierre-François Marie Brevet, Hubert Girault, Manuel Alejandro Méndez Agudelo, Heron Vrubel, Dmitry Momotenko, Micheal Diarmaid Scanlon, Evgeny Smirnov

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