Photoelectrochemical study of Pt doped Bi2WO6 and SrTiO3 photocatalyst for photocatalytic degradation of Reactive Red 4 (RR4) dye

Environmental pollution has all over the place with consequences for human health, living organisms, and ecosystems. To solving this problem, it is necessary to ensure the total transformation of the parent harmful compounds is complete in order to eliminate their toxicity and persistence. Bi2WO6 and SrTiO3 having less photocatalytic performance because of the several factors. There is several modifications have been introduced to make these photocatalysts become more active under photocatalytic process. Photocatalysis provides a promising solution to this problem. This study investigates the effectiveness of Pt doped Bi2WO6/SrTiO3 composites for photocatalytic dye degradation in wastewater. First and foremost, of Bi2WO6/SrTiO3 composite was prepared by the different ratios. The methods involve of mixing and calcination of of Bi2WO6/SrTiO3 at 400oC for 2 h in tube furnace. Then, to fabricate Bi2WO6/SrTiO3, Platinum was deposited onto the Bi2WO6/SrTiO3 composite using the photodeposition technique. RR4 dyes was used as model pollutant to examine photocatalytic activity of Pt doped Bi2WO6/SrTiO3. FTIR and PEC were used for photodegradation study. In the FTIR, it was observed that functional groups presence in SrTiO3, Bi3WO6, Bi3WO6/SrTiO3 and Pt dope Bi3WO6/SrTiO3. While for PEC analysis, LSV, EIS and CA demonstrated that SrTiO3, Bi3WO6, Bi3WO6/SrTiO3, Pt dope Bi3WO6/SrTiO3 has high current density under light, low charge transfer resistance under light and high photocurrent response, respectively. For photocatalytic degradation, the highest K value among the sample is Bi3WO6/SrTiO3 (70:30) with value 0.0016.