Title of article :
Study of the R–(Zr,W)–(O,N) (R = Y, Nd, Sm, Gd, Yb) oxynitride system
Author/Authors :
Tessier، نويسنده , , Franck and Maillard، نويسنده , , Pascal and Orhan، نويسنده , , Emmanuelle and Cheviré، نويسنده , , François، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2010
Pages :
6
From page :
97
To page :
102
Abstract :
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. R2Zr2−xWxO7+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.
Keywords :
A. Nitrides , D. Optical properties , D. Crystal structure
Journal title :
Materials Research Bulletin
Serial Year :
2010
Journal title :
Materials Research Bulletin
Record number :
2099901
Link To Document :
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