Concept

Great Oxidation Event

Related publications (67)

Activation of boron-doped diamond with IrO2 clusters

Christos Comninellis, Pierre-Alain Michaud, Ilaria Duo

Deposition of small amts. of IrO2 clusters on the B-doped diamond (BDD) surface (BDD-IrO2 electrode) dramatically enhances both the O2 evolution reaction and the oxidn. of orgs. in the potential region of water decompn. The fact that BDD-IrO2 electrode beh ...

2000

Oxidative coupling of toluene under periodic conditions on Pb/Li/MgO: a selective pathway to 1,2-diphenylethane

Albert Renken

Toluene oxidn. over Pb/Li/MgO is investigated in a tubular fixed bed reactor at low conversions. A periodic process alternating toluene oxidn. in absence of oxygen in the feed and regeneration of the catalyst by oxygen presents important changes in product ...

Elsevier1997

Electrochemical properties of Ti/SnO2-Sb2O5 electrodes prepared by the spray pyrolysis technique

Christos Comninellis

Cyclic voltammetry for the ferri-ferrocyanide redox couple was used to study the Ti/SnO2-Sb2O5 electrode prepd. by spray-pyrolysis under different conditions. Increasing the prepn. temp. and the duration of coating deposition results in a decrease of ip an ...

1996

Al Intermediate Oxidation-States Observed by Core-Level Photoemission Spectroscopy

Giorgio Margaritondo

Aluminum oxidation states in stoichiometric or substoichiometric configuration are studied by core level photoemission spectroscopy on different substrates (SiO2, graphite). They are compared with recent results reported for the interface Si-Al-n+O. Three ...

1995

Characterization of DSA-type oxygen evolving electrodes: choice of a coating

Christos Comninellis

In the search for a DSA-type electrode for oxygen evolution in acidic solns., nine binary coatings with IrO2, RuO2, Pt as conducting component, and TiO2, ZrO2, Ta2O5 as inert oxides, were deposited on titanium, examd. for their microstructural properties a ...

1991

Biogeochemistry of iron in an acidic lake - Dedicated to Werner Stumm for his 65th birthday

Janet Gordon Hering

In this paper, the fate of iron in Lake Cristallina, an acidic lake in the Alps of Switzerland, is discussed. A simple conceptual model is developed in order to explain the observed diel variation in dissolved iron(II) concentration. Biotite weathering pro ...

1990

Characterization of DSA-type electrodes for oxygen evolution - I. Titanium/iridium dioxide-tantalum pentoxide electrode

Christos Comninellis

The morphol. examn. and study of the crystal structure of oxygen-evolving dimensionally stable anodes (DSA) (Ti/IrO2-Ta2O5) has shown that the deposit takes the form of a cobble-stone road because of the thermal shock following its prepn. at 550 Deg. Also ...

1988

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