Studies On Oxides Containing 3d Transition Elements: Mixed- Metal oxides(spinels)as Gas sensosrs and photocatalyst - Softcover

Jadhav, Sanjay

 
9783848487479: Studies On Oxides Containing 3d Transition Elements: Mixed- Metal oxides(spinels)as Gas sensosrs and photocatalyst
Softcover
ISBN 10: 3848487470 ISBN 13: 9783848487479
Verlag: LAP LAMBERT Academic Publishing, 2012

Inhaltsangabe

The gas sensing mechanism is based on conductance of the ferrites. The oxygen adsorbed on the surface of the material influences conductance of the ferrite. The amount of oxygen on the surface of the material depends on the particle size, specific area and operating temperature of the sensor. The interaction between the sensing material and gas to be detected determines the gas response. Generally, photocatalytic degradation of organic compounds includes various processes. An electron is excited from the valence band to the conduction band (CB) of metal oxides by absorption of light with energy equal to or greater than the band gap of the semiconductor. The separated photoinduced electrons and holes transfer to the semiconductor surface efficiently. At the surface, electrons react with acceptors (usually O2 dissolved in the solution) to produce oxidant species, for example hydroxyl radicals. Meanwhile, holes react with donors (H2O, OH–) to produce oxidant species. Oxidant species produced from electrons and holes have strong oxidizing abilities and can directly oxidize organic compounds into CO2 and H2O.

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Verlag
LAP LAMBERT Academic Publishing
Erscheinungsdatum
2012
Sprache
Englisch
ISBN 10 
3848487470
ISBN 13 
9783848487479
Einband
Taschenbuch
Anzahl der Seiten
240
Kontakt zum Hersteller
Nicht verfügbar
Verantwortliche Person
Fastbook Publishing
customerservice@vdm-vsg.de

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