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Browsing Research Articles (University of Pretoria) by Subject "X-ray photo-electron spectroscopy (XPS)"

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Phase evolution of vanadium oxides obtained through temperature programmed calcinations of ammonium vanadate in hydrogen atmosphere and their humidity sensing properties

Akande, A.A.; Linganiso, E.C.; Dhonge, B.P.; Rammutla, K.E.; Machatine, Augusto Gonçalo Jose; Prinsloo, Linda Charlotta; Kunert, Herbert W.; Mwakikunga, B.W. (Elsevier, 2015-02)

The possibility of obtaining vanadium dioxide (VO2) [wherein the vanadium ionic state is 4þ] from a precursor of ammonium metavanadate (NH4VO3) bearing the ion V5þ is investigated. The reduction is carried out by calcining ...

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