Abstract
The pentavalent bismuthate BaBi2O6 was prepared by a low-temperature hydrothermal reaction using NaBiO3.nH2O and Ba(OH)2.8H2O as starting materials. The X-ray powder diffraction pattern was indexed with a hexagonal cell (space group: P-31 m), the same as a PbSb2O6-type crystal. The crystal structure of this compound was refined using synchrotron X-ray powder diffraction data. The cell parameters were found to be a=5.57534(6) and c=5.7381(1) Å and the final reliability (R) factors obtained by Rietveld analysis were Rwp=5.15 % and Rp=3.62 %. This compound exhibited profound photocatalytic activity for phenol decomposition under visible light irradiation.
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