Novel solar light driven photocatalyst, zinc indium vanadate for photodegradation of aqueous phenol

In the present investigation, we have demonstrated the synthesis of novel photocatalyst, zinc indium vanadate (ZIV) by solid–solid state route using respective oxides of zinc, indium and vanadium. This novel photocatalyst was characterized using XRD, FESEM, UV-DRS and FTIR in order to investigate its structural, morphological and optical properties. XRD clearly shows the formation of phase pure ZIV of triclinic crystal structure with good crystallinity. FESEM micrographs showed the clustered morphology having particle size between 0.5 and 1 μm. Since, optical study showed the band gap around 2.8 eV, i.e. in visible region, we have performed the photocatalytic activity of phenol degradation under visible light irradiation. The photodecomposition of phenol by ZIV is studied for the first time and an excellent photocatalytic activity was obtained using this novel photocatalyst. Considering the band gap of zinc indium vanadate in visible region, it will also be the potential candidate for water splitting.

Novel photocatalyst, zinc indium vanadate (ZnIn2V2O9) demonstrated and showed an excellent photocatalytic activity for phenol degradation under visible light.Figure optionsDownload as PowerPoint slideResearch highlights
► Designing and identification of a photocatalyst having prospective potential application to be used in visible light (400–800 nm).
► Successful synthesis of novel ZnIn2V2O9 by solid state route.
► Confirmation of the designed product using characterization techniques.
► Application study comprising photodegradation of aqueous phenol at visible light despite of UV radiations.