Comparative Study of Phases Forming in Niobium-Antimony Oxides System upon High Temperature Treatment and High-Energy Ball Milling |
| P. Dulian a, M. Piz b, E. Filipek b and K. Wieczorek-Ciurowa a
a Cracow University of Technology, Faculty of Chemical Engineering and Technology, Warszawska 24, 31-155 Kraków, Poland b West Pomeranian University of Technology Szczecin, Faculty of Technology and Chemical Engineering, al. Piastów 42, 71-065 Szczecin, Poland |
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| The compound SbNbO4 that is formed in a ternary system of Nb-Sb-O has been obtained for the first time by high-energy ball milling of the equimolar mixture of oxides Sb2O3/Nb2O5in argon atmosphere. This compound was characterised by X-ray diffraction, differential thermal analysis- thermal gravimetry, infrared, and scanning electron microscopy methods and its properties were compared with those of SbNbO4 also obtained as a result of high-temperature reaction between the same oxides and also in argon atmosphere. As shown by differential thermal analysis results, irrespective of the method of synthesis, SbNbO4 is stable in argon atmosphere up to ≈1125°C and in air up to ≈800°C. The compound can be applied as a photocatalyst in the reaction of producing hydrogen from water. |
DOI: 10.12693/APhysPolA.126.938 PACS numbers: 81.05.-t |