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High-throughput synthesis and characterization of BiMoVOX materials

By Sergio Russu, Moniek Tromp, Nikolaos Tsapatsaris, Angela M. Beesley, Sven L.M. Schroeder, Mark T. Weller and John Evans


The high throughput synthesis and characterization of a particular family of ceramic materials, bismuth molybdenum vanadium oxides (BiMoVOX), suitable as inorganic yellow pigments and low temperature oxidation catalysts, is described. Samples, synthesized by calcination and peroxo sol-gel methods, are characterized by X-ray powder diffraction, UV-visible and XAFS spectroscopy. A combined high-throughput XRD/XAFS study of a 54 samples array, with simultaneous refinement of data of both techniques, has been performed. Molybdenum doping of bismuth vanadate results in a phase transition from monoclinic BiV04 to tetragonal Bi(V,Mo)04, both of scheelite type. Both central metals, V5+ and Mo6+, remain in a tetrahedral coordination. UV/visible spectroscopy identifies a linear blue shift as a function of Mo6+ amount

Topics: QD, QC
Publisher: American Institute of Physics
Year: 2007
OAI identifier: oai:eprints.soton.ac.uk:46747
Provided by: e-Prints Soton

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