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In order to enhance the performance of bismuth vanadium oxide (Bi 4 V 2 O 11 ) we synthesized La doped Bi 4 V 2 O 11  in different concentrations (La = 5%, 10%, 15%) by using sol-gel method. The nanoparticles are stabilized in tetragonal phase in the range of 50 nm particle size. With the help of XPS it was confirmed that in La/Bi 4 V 2 O 11  lattice La is in 3+ oxidation state and replaces Bi 3+  in the lattice. SEM and EDX show the amorphous nature and chemical compositions of the nanoparticles. The structural analysis and energy calculations revealed that La 3+  ion replaces Bi 3+  in Bi 4 V 2 O 11  lattice without disturbing its host structure. The PL results revealed that photogenerated charges recombination was significantly reduced. The photocatalytic degradation of MB under visible light illumination is performed and the best photocatalytic activity among various compositions of La/Bi 4 V 2 O 11  is shown by 15% La/Bi 4 V 2 O 11  nanoparticles. 15% La/Bi 4 V 2 O 11  photocatalyst show 98% of degradation of MB in 120 mins.

phase transitions

Synthesis of tetragonally stabilized lanthanum doped bismuth vanadium oxide nanoparticles and its enhanced visible light induced photocatalytic performance