Abstract
Abstract The subsolidus phase relationships of the system TiO 2 –Bi 2 O 3 –V 2 O 5 were investigated by X-ray diffraction (XRD) analyses. There were 8 binary compounds, two solid solution areas, 4 two-phase fields, and 12 three-phase regions in this system. A new ternary compound Bi 17 V 2 TiO 32.5 was discovered by the powder diffraction pattern. Three solid solutions as x Bi 2 O 3 :V 2 O 5 (5 ⩽ x ⩽ 6), (Bi 2 O 3 ) 1− x (V 2 O 5 ) x (0 ⩽ x ⩽ 0.069) and the BIMEVOX family of materials were also identified. The studies of the photocatalytic activity of selective area showed Bi 25 VO 40 tops others with high photocatalytic activity under visible light.
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