Bi26Mo10O69–based solid solution with nonmetal dopants: Synthesis and properties

A series of S- and P- doped Bi26Mo10O69 was synthesized by conventional solid state method and studied. Chemical analysis detected closeness of experimental and theoretical ratios of bismuth, molybdenum and dopant for P-doped samples and 50% deficiency of sulfur for S-doped samples. The solid soluti...

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Veröffentlicht in:Solid state ionics Jg. 331; S. 30 - 36
Hauptverfasser: Mikhaylovskaya, Zoya A., Petrova, Sofia A., Buyanova, Elena S., Morozova, Maria V.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Amsterdam Elsevier B.V 01.03.2019
Elsevier BV
Schlagworte:
Bismuth
Bismuth molybdates
Bismuth oxide
Chemical analysis
Chemical synthesis
Dopants
Infrared spectroscopy
Ion currents
Molybdenum
Organic chemistry
Oxygen ion conductors
Particle size
Phosphor doping
Solid solutions
Solids
Spectrum analysis
Sulfur doping
X-ray diffraction
Oxygen ion conductors
Bismuth oxide
Phosphor doping
Sulfur doping
Bismuth molybdates
ISSN:0167-2738, 1872-7689
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Zusammenfassung:A series of S- and P- doped Bi26Mo10O69 was synthesized by conventional solid state method and studied. Chemical analysis detected closeness of experimental and theoretical ratios of bismuth, molybdenum and dopant for P-doped samples and 50% deficiency of sulfur for S-doped samples. The solid solutions ranges were determined to be x = 0–0.7 for Bi26Mo10−2xP2xO69−d and x = 0–0.6 for Bi26Mo10−2xSxO69−d. Stabilization of the monoclinic form is observed when x > 0.1 for P and x > 0.4 for S doping. The IR FT spectroscopy and Rietveld whole profile structure refinement at X-Ray diffraction data showed substitution of Mo by S and P forming SO4 and PO4 groups. The geometrical sizes of particles were determined to be in the range of 1–20 μm. Materials under study are characterized with total ionic conductivity of the 1 × 10−4 − 9 × 10−3 S cm−1 at 273–1073 K. •S and doped Bi26Mo10O69−d solid solutions were synthesized by solid sate method.•Chemical analysis gave Bi26Mo10−2xP2xO69−d and Bi26Mo10−2xSxO69−d formulae.•Infrared spectroscopy detected SO4 and PO4 groups.•Impedance spectroscopy showed a modest increase in conductivity.
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ISSN:0167-2738
1872-7689
DOI:10.1016/j.ssi.2018.12.014