Novel TaPO<sub>5-x</sub>N<sub>2x/3</sub> oxynitrides - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Journal of Alloys and Compounds Année : 2012

Novel TaPO5-xN2x/3 oxynitrides

Résumé

A series of novel nitrided tantalophosphates has been prepared by nitridation of X-ray amorphous TaPO5 precursors under ammonia flow. By varying the nitridation temperature, amorphous TaPO5-xN2x/3 (1.6 < x < 4.1) oxynitrides were obtained with different nitrogen contents (N wt.% = 5-15). The most relevant features of this oxynitride series are as follow: (i) specific surface areas higher than 150 m2.g−1, (ii) yellow to orange colors depending on nitrogen contents and (iii) formation of a solid solution with variable nitrogen and oxygen contents. The precursors and corresponding oxynitrides have been characterized by several techniques including X-ray diffraction, oxygen/nitrogen elemental analyses, BET analysis, UV-vis spectrophotometry, thermal analysis, SEM, DRIFT and NMR analyses.

Domaines

Matériaux

Dates et versions

hal-00848802 , version 1 (29-07-2013)

Identifiants

Citer

Erwan Ray, Franck Tessier, François Cheviré, Nathalie Herbert, Ronan Lebullenger, et al.. Novel TaPO5-xN2x/3 oxynitrides. Journal of Alloys and Compounds, 2012, 513, pp.530-538. ⟨10.1016/j.jallcom.2011.10.115⟩. ⟨hal-00848802⟩
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