Christos Comninellis

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Publications associées (93)

Electrochemical reactivity at graphitic micro-domains on polycrystalline boron doped diamond thin-films electrodes

Christos Comninellis

This paper deals with the electrochem. reactivity of B doped diamond (BDD) electrodes. A comparative study was carried out to show the influence of the presence of graphitic micro-domains upon the surface of these films. Those graphitic domains are sometim ...

2005

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

Ivan Bolzonella, Christos Comninellis

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

Bubble evolution on a vertical electrode under extreme current densities

Rolf Wüthrich, Hannes Bleuler, Christos Comninellis

Under gas evolution, the current voltage characteristics of an electrochemical cell are strongly affected by the presence of growing bubbles. At high current densities, the evolution of the bubbles becomes the rate limiting step of the electrochemical proc ...

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

Electrochemical promotion of ethylene oxidation over Rh catalyst thin films sputtered on YSZ and TiO2/YSZ supports

Christos Comninellis, György Foti

The effect of electrochem. promotion of catalysis or nonfaradaic electrochem. modification of catalytic activity or electropromotion was studied for the model reaction of ethylene oxidn. on sputter-coated Rh films. The thin (40 nm) Rh films were deposited ...

2005

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

Method and apparatus for carrying out electrochemically promoted reactions

Christos Comninellis, György Foti

The method and app. for carrying out electrochem. promoted catalytic reactions, i.e., catalytic reactions where the catalytic rate and selectivity is modified by applying an elec. current or potential between the porous catalyst film which is deposited on ...

(University of Patras, Greece).2005

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

Micro-usinage de verre avec décharges électrochimiques

Rolf Wüthrich, Hannes Bleuler, Christos Comninellis, Erika Herrera Calderon

2005

Electrochemically Induced Oscillations of C2H4 Oxidation Over Thin Sputtered Rh Catalyst Films

Christos Comninellis, György Foti

The electrochem. promoted induction of self-sustained catalytic rate and potential oscillations during C2H4 oxidn. was studied over sputtered Rh thin (40 nm catalyst films interfaced with ZrO2 (8 mol% Y2O3)). The reaction rate oscillates simultaneously wit ...

2005

Study of DSA deactivation

Rolf Wüthrich, Hannes Bleuler, Christos Comninellis, Erika Herrera Calderon

2005

Electrochemical characterization of dimensionally stable anodes (DSA®)

Rolf Wüthrich, Hannes Bleuler, Christos Comninellis, Erika Herrera Calderon

2005

Etude d'un procédé pour la perfluoration électrochimique du fluorure de l'acide n-octanesulfonique dans l'acide fluorhydrique liquide

Christos Comninellis

EPFL1979

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