Title
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Synthesis and structural characterization of a novel Sillén Aurivillius bismuth oxyhalide, , and its derivatives
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Author
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Abstract
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A new Sillén Aurivillius family of layered bismuth oxyhalides has been designed and successfully constructed on the basis of PbBiO2X (X = halogen) synthetic perites and γ-form of Bi2VO5.5 solid electrolyte. This demonstrates, for the first time, the ability of the latter to serve as a building block in construction of mixed-layer structures. The parent compound PbBi3VO7.5-δCl (δ ≤ 0.05) has been investigated by powder XRD, TEM, XPS methods and magnetic susceptibility measurements. An unexpected but important condition for the formation of the mixed-layer structure is partial (ca. 5%) reduction of VV into VIV which probably suppresses competitive formation of apatite-like Pb Bi vanadates. This reduction also stabilizes the γ polymorphic form of Bi2VO5.5 not only in the intergrowth structure, but in Bi2V1-xMxO5.5-y (M = Nb, Sb) solid solutions. |
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Language
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English
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Source (journal)
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Solid state sciences. - Amsterdam
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Publication
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Amsterdam
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2018
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ISSN
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1293-2558
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DOI
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10.1016/J.SOLIDSTATESCIENCES.2017.11.006
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Volume/pages
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75
(2018)
, p. 27-33
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ISI
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000418566200005
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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