Publications by Thomas James Stockmann

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

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

Electrochemical behaviour of ferrocenes in tributylmethylphosphonium methyl sulfate mixtures with water and 1,2-dichloroethane

Zhifeng Ding, Thomas James Stockmann

Electron transfer (ET) reactions in ionic liquid (IL)vertical bar organic solvent (1,2-dichloroethane, DCE) and IL vertical bar water mixtures were investigated using a Pt disk ultramicroelectrode (UME) along with ferrocene (Fc) and ferrocenemethanol (FcCH ...

Canadian Science Publishing, Nrc Research Press2015

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

Electrochemical assessment of water|ionic liquid biphasic systems towards cesium extraction from nuclear waste

Zhifeng Ding, Thomas James Stockmann

A room temperature ionic liquid (IL) composed of a quaternary alkylphosphonium (trihexyltetradecylphosphonium, P66614(+)) and tetrakis(pentafluorophenyl) borate anion (TB) was employed within a water| P66614TB (w|P66614TB or w|IL) biphasic system to evalua ...

Elsevier2014

Electrochemical oxygen reduction at soft interfaces catalyzed by the transfer of hydrated lithium cations

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

The oxygen reduction reaction by decamethylferrocene (DMFc), triggered by hydrophilic metallic cations behaving as Lewis acids towards water molecules in a homogeneous organic phase reaction, was investigated using cyclic voltammetry at the water|1,2-dichl ...

Elsevier2014

Surprising acidity of hydrated lithium cations in organic solvents

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

Lithium cations are shown to have a significant role on catalyzing oxygen and proton reduction along with SN1 reactions in biphasic systems. We propose that this catalytic effect is due to the surprising acidity of the hydrated cations; interactions betwee ...

Royal Society of Chemistry2014

Kinetic differentiation of bulk/interfacial oxygen reduction mechanisms at/near liquid/liquid interfaces using scanning electrochemical microscopy

Hubert Girault, Fernando Cortes Salazar, Dmitry Momotenko, Haiqiang Deng, Thomas James Stockmann, Pekka Eero Peljo

The present work describes the application of scanning electrochemical microscopy (SECM) in the feedback mode to determine the kinetics of oxygen reduction at or near the liquid/liquid interface – between water and 1,2-dichloroethane (w/DCE). The system co ...

Elsevier2014

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

Interfacial Complexation Reactions of Sr2+ with Octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine Oxide for Understanding Its Extraction in Reprocessing Spent Nuclear Fuels

Hubert Girault, Zhifeng Ding, Yu Lu, Thomas James Stockmann

The complexation reactions between strontium (Sr2+) and octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO) were studied at the aqueous vertical bar 1,2-dichloroethane (w vertical bar DCE) and aqueous vertical bar room-temperature ionic liqui ...

2011

Evaluation of Gibbs Energy of Dioxouranium Transfer at an Electrified Liquid vertical bar Liquid Interface Supported on a Microhole

Hubert Girault, Zhifeng Ding, Manuel Alejandro Méndez Agudelo, Astrid Johana Olaya Avendano, Thomas James Stockmann

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