Synergistic effect of band edge potentials on BiFeO/VO composite: Enhanced photo catalytic activity.

The BiFeO/VO has been successfully synthesized by simple annealing of BiFeO nanoplates and VO nanoflower. The phase, structural, optical properties and chemical state of the BiFeO, VO and different composition of BiFeO/VO samples were comparatively characterized by various spectroscopic and microscopic techniques. The prepared catalyst exhibits unique photo catalytic and post-oxidation/reduction ability for removal of various (MB, Phenol, CV, RhB) water organic pollutants. Compared to pure BiFeO and VO, the different Wt % of BiFeO/VO composition exhibited higher photo catalytic activity. The fortunate BiFeO/VO interface hybrid photo catalyst makes a significant impact in the enhancement of photo catalytic reaction. This remarkable efficiency could be ascribed to the synergistic effect between the VO petals and BiFeO plates. The exceptional morphology, increased surface area, uniformity, less-agglomerated spreading could increase the ability of visible light response, which lead the improved electron transport ability and the higher charge separation. The enhanced rate of photo generated charge carriers separations were evinced by the EIS and PL spectrum measurements. The allowed radical trapping experiment divulge that the hole (h), and super oxide radical (O-) are the minimized effect in degradation, on the other hand hydroxyl radical (OH) is plays the foremost role and act as the active radicals in the catalytic organism. In relations of above investigation, a probable photo degradation mechanism of the as-synthesized photo catalyst is carefully explicated. This effort delivers an effective approach to design and fabricate the efficient photo catalyst through integrating of materials, which has a potential for industrial waste water purification.