Study of the R-(Zr,W)-(O,N) (R = Y, Nd, Sm, Gd, Yb) oxynitride system - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Materials Research Bulletin Année : 2010

Study of the R-(Zr,W)-(O,N) (R = Y, Nd, Sm, Gd, Yb) oxynitride system

Résumé

The replacement of tantalum by the couple Zr/W within the RTa-O-N systems (R = Y, Nd, Sm, Gd, Yb), enables the preparation of novel oxide and oxynitride phases in the R-Zr-W-O-N system. R2Zr2xWxO7+x oxides exhibit the fluorite-type (x < 0.9) and scheelite (x 1) structures. Corresponding oxynitride compositions are of the fluorite-type and show different colors, for example in the case of ytterbium: pale yellow (x = 0.2 or 0.25), green (x = 0.5-0.8) and brown for the tungsten-rich samples (x = 0.9, 1). Photocatalytic activity measurements have been performed to investigate the overall water splitting behavior of these colored phases.

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Chimie
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hal-00469836 , version 1 (16-02-2016)

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Franck Tessier, Pascal Maillard, Emmanuelle Orhan, François Cheviré. Study of the R-(Zr,W)-(O,N) (R = Y, Nd, Sm, Gd, Yb) oxynitride system. Materials Research Bulletin, 2010, 45 (2), pp.97-102. ⟨10.1016/j.materresbull.2009.10.003⟩. ⟨hal-00469836⟩
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