Stefanie Drensler, Sarah Walkner, Cezarina Mardare, Achim Walter Hassel,
"On the pH-sensing properties of differently prepared tungsten oxide filmsol"
, in Physica Status Solidi A: Applications and Materials Science, Vol. 211, Nummer 6, Seite(n) 1340-1345, 2014, ISSN: 1862-6319
Original Titel:
On the pH-sensing properties of differently prepared tungsten oxide filmsol
Sprache des Titels:
Englisch
Original Kurzfassung:
In this paper, different preparation routes and designs for pH
sensing metal/metal oxide electrodes are evaluated. Crystallographic
changes in the oxide film are responsible for the pH-sensing capability of tungsten oxide. As the present oxide structure is directly limiting the measuring range, as-received tungsten oxide powders were heat treated to produce polymorphs of WO3, in an attempt to extend the measuring
range. Furthermore, electrochemical oxide covered electrodes ranging from micro- down to nano-dimensions have been implemented. Optional coating with Nafion, serving as a membrane material, allows shifting the measuring range even to strongly alkaline conditions.
Sprache der Kurzfassung:
Englisch
Journal:
Physica Status Solidi A: Applications and Materials Science
Forschungs-