Publication

Diamond electrodes and microelectrodes

Christos Comninellis
1998
Conference Papers

Abstract

Synthetic boron doped diamond electrodes and microelectrodes were manufd. with techniques usually utilized in microelectronics: HFCVD coating, optical photolithog. and plasma etching. These electrodes were characterized in terms of their electrochem. properties: the overpotentials for O2 and H2 evolution, the reversibility for simple electron transfer reactions (ferri-ferrocyanide), complex electron transfer reactions (oxidn. of org. compds.), chlorine detection and O3 prodn. A comparison with other types of electrodes (IrO2, SnO2) is given concerning hydroxyl radical formation. Ozone prodn. has been measured; showing an electrochem. efficiency of 12-15 % at -2 DegC. Oxidn. of phenol to CO2 can also be achieved without the formation of intermediate. [on SciFinder (R)]

Official source

https://infoscience.epfl.ch/entities/publication/a075ce63-9e6c-4240-a24c-72731b40f461

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Christos Comninellis
1998
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/a075ce63-9e6c-4240-a24c-72731b40f461

About this result

Related concepts (32)

Electrode

An electrode is an electrical conductor used to make contact with a nonmetallic part of a circuit (e.g. a semiconductor, an electrolyte, a vacuum or air). Electrodes are essential parts of batteries that can consist of a variety of materials depending on the type of battery. The electrophore, invented by Johan Wilcke, was an early version of an electrode used to study static electricity. Electrodes are an essential part of any battery. The first electrochemical battery made was devised by Alessandro Volta and was aptly named the Voltaic cell.

Reference electrode

A reference electrode is an electrode that has a stable and well-known electrode potential. The overall chemical reaction taking place in a cell is made up of two independent half-reactions, which describe chemical changes at the two electrodes. To focus on the reaction at the working electrode, the reference electrode is standardized with constant (buffered or saturated) concentrations of each participant of the redox reaction. There are many ways reference electrodes are used.

Electron transfer

Electron transfer (ET) occurs when an electron relocates from an atom or molecule to another such chemical entity. ET is a mechanistic description of certain kinds of redox reactions involving transfer of electrons. Electrochemical processes are ET reactions. ET reactions are relevant to photosynthesis and respiration and commonly involve transition metal complexes. In organic chemistry ET is a step in some commercial polymerization reactions. It is foundational to photoredox catalysis.

Related publications (7)

Diamond electrodes and microelectrodes

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