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Christos Comninellis

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Related publications (91)

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Preparation of gold nanoparticles by heat treatment of sputter deposited gold on boron-doped diamond film electrode

Christos Comninellis, György Foti, Bahaa El Roustom

A novel two-step method was developed to prep. gold nanoparticles on boron-doped diamond (BDD) electrode. It consisted of sputter deposition of max. 15 equiv monolayers of gold, followed by a heat treatment at 400-600 Deg in air. The as-sputtered gold depo ...

Elsevier2005

Evaluation of boron doped diamond electrodes for organic electrosynthesis on a preparative scale

Christos Comninellis

We have investigated some anodic and cathodic transformations using boron doped diamond (BDD) electrodes. The oxidn. of a propargylic alc. as well as the arom. side chain oxidn. in water as electrolyte did not yield the desired products in high yield and s ...

Springer2005

Enhanced ammonia oxidation on BDD induced by inhibition of oxygen evolution reaction

Christos Comninellis, Agnieszka Kapalka

Electrochemical oxidation of ammonia (NH3 and NH4+) on boron-doped diamond (BDD) electrode was studied using differential electrochemical mass-spectrometry (DEMS) and chronoamperometry. Electro-oxidation of ammonia induces inhibition of the oxygen evolutio ...

Elsevier2010

Analysis of Solid Oxide Fuel Cell LSM-YSZ Composite Cathodes With Varying Starting Powder Sizes

Christos Comninellis, Jan Van Herle, Pietro Tanasini

Solid oxide fuel cell cathodes have been examined using non-destructive x-ray nanotomography. The cathodes examined were a composite of strontium-doped lanthanum manganite (LSM) and yttria-stabilized zirconia (YSZ), with three different starting powder siz ...

2011

Investigation of formic acid oxidation on Ti/IrO2 electrodes

Christos Comninellis, Stéphane Fierro

2009

The importance of electrode material in environmental electrochemistry: Formation and reactivity of free hydroxyl radicals on boron-doped diamond electrodes

Christos Comninellis, György Foti, Agnieszka Kapalka

2009

Electrosynthesis of trimethylorthoformate on BDD electrodes

Christos Comninellis

The anodic methoxylation of formaldehyde dimethylacetal (FADMA) to trimethylorthoformate (TMOF) in basic methanol was investigated on boron-doped diamond (BDD) electrodes. Cyclic voltammetry and preparative electrolysis have shown that FADMA is electrochem ...

Springer Netherlands2006

Cathode thickness-dependent tolerance to Cr-poisoning in solid oxide fuel cells

Jan Van Herle, Christos Comninellis, Aïcha Hessler-Wyser, Josef Andreas Schuler, Pietro Tanasini

This work aimed to set new guidelines for the quantification of Cr accumulation in solid oxide fuel cell cathodes after operation, and enabled to pinpoint a diffusion-controlled tolerance to Cr-poisoning for increased cathode thickness; the additional cath ...

Elsevier2010

Comparison of X-ray Nanotomography and FIB-SEM in Quantifying the Composite LSM/YSZ SOFC Cathode Microstructure

Christos Comninellis, Jan Van Herle, Marco Cantoni, Pietro Tanasini

X-ray nanotomography and focused ion beam scanning electron microscopy (FIB-SEM) provide unique opportunities to interrogate the 3D microstructure of solid oxide fuel cell (SOFC) electrodes with unprecedented spatial resolution with elemental specificity. ...

2011

Boron-doped diamond-supported Pt nanoparticles synthesized in compartmentalized nanoreactors for electrocatalysis

Christos Comninellis, Guillaume Siné

Platinum nanoparticles have here been synthesized via the microemulsion method that isolates the reactive species from the whole medium into compartmentalized nanoreactors. Such synthesized Pt nanoparticles have diam. included in the 2-5 nm range domain wi ...

2005

Nafion-assisted deposition of microemulsion-synthesized platinum nanoparticles on BDD

Christos Comninellis, Guillaume Siné

Pt nanoparticles were synthesized by the H2O-in-oil (w/o) microemulsion technique and deposited onto B-doped diamond (BDD) electrodes. TEM showed that Pt particles size is limited to 2-5 nm range with narrow distribution. Anodic treatment at high overpoten ...

2005

A DEMS study of methanol and formic acid oxidation on boron-doped diamond electrode

Christos Comninellis, György Foti, Agnieszka Kapalka

The electrochemical oxidation of methanol and formic acid in 1 M HClO4 is studied on boron-doped diamond electrode using differential electrochemical mass spectrometry (DEMS). DEMS is used to identify products and intermediates of the reaction monitored on ...

2009

Kinetic study of formic acid oxidation on Ti/IrO2 electrodes prepared using the spin coating deposition technique

Christos Comninellis, Stéphane Fierro

In the first part of this paper, IrO2 electrodes produced by thermal decomposition of H2IrCl6 precursor were manufactured using the spin coating deposition technique, where centrifugal forces spread the precursor solution with simultaneous evaporation of t ...

Elsevier2010

Modeling of Sustainable Base Production by Microbial Electrolysis Cell

Christos Comninellis

A predictive model for the microbial/electrochemical base formation from wastewater was established and compared to experimental conditions within a microbial electrolysis cell. A Na2SO4/K2SO4 anolyte showed that model prediction matched experimental resul ...

Wiley-V C H Verlag Gmbh2016

Electrochemical investigation of platinum electrode in solid electrolyte cell

Christos Comninellis, György Foti, Arnaud Jaccoud

Electro-oxidn. of platinum film electrode deposited on yttria-stabilized zirconia (YSZ) is examd. in situ using potential programmed voltammetry at 450 DegC in oxygen contg. atm. Under prolonged anodic oxidn. different sorts of oxidized species are formed ...

2006

Electrochemical promotion of RuO2 catalysts for the combustion of toluene and ethylene

Christos Comninellis, Ivan Bolzonella

The electrochem. promotion of the complete catalytic oxidn. of ethylene and toluene on RuO2Catalyst films deposited on Y2O3-stabilized-ZrO2 (YSZ) was studied at temps. 400 to 500 Deg. Anodic polarization (1.5 V), i.e. O2- supply from the YSZ support to the ...

2005

Pt-Ir Binary Electrodes for Direct Oxidation of Methanol in Low-Temperature Fuel Cells (DMFCs)

Christos Comninellis

In this study, Pt-Ir binary electrodes were prepared by DC magnetron sputtering and characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), electrochemical techniques, and CO stripping. The effect of Ir loading in electrocatalytic ...

Springer2013

First International Conference on the Origin of Electrochemical Promotion of Catalysis (OREPOC), Thessaloniki, Greece, 2007 - Foreword

Christos Comninellis

Springer Verlag2008

Effectiveness factor of fast (Fe3+/Fe2+), moderate (Cl2/Cl-) and slow (O2/H2O) redox couples using IrO2 based electrodes of different loading

Christos Comninellis, Rolf Wüthrich, György Foti

Springer Netherlands2009

Simultaneous detection of iodine and iodide on boron doped diamond electrodes

Christos Comninellis, Stéphane Fierro

Individual and simultaneous electrochemical detection of iodide and iodine has been performed via cyclic voltammetry on boron doped diamond (SOD) electrodes in a 1 M NaClO4 (pH 8) solution, representative of typical environmental water conditions. It is fe ...

Elsevier Science Bv2013