The efficiency of rare earth doped V 2 O 5 nanoparticles on photocatalytic and antibacterial activity

In this study, V ₂ O ₅ and La doped V ₂ O ₅ nanoparticles were synthesized using a hydrothermal method to toxic pollutants removal from wastewater and assess the antibacterial activity. The prepared samples were characterized by sophisticated characterization techniques. XRD confirmed that La doped V ₂ O ₅ samples exhibit an orthorhombic crystal structure, with the bandgap of La-doped V ₂ O ₅ nanoparticles being 2.4 eV, which is smaller than V ₂ O ₅ . The bandgap of La-doped V ₂ O ₅ nanoparticles was predicted using a popular machine learning algorithm based on XGBoost technology. FE-SEM images of both samples depicted typical platelet and layered like structures, and EDX validated the presence of La, V and O in the La doped V ₂ O ₅ nanoparticles, verifying the elemental composition. The photocatalytic activity of samples were investigated by the photodegradation of rhodamine B (RhB) under visible light irradiation. In the photocatalytic performance of La doped V ₂ O ₅ sample exhibited faster decolorization of RhB and higher photodegradation efficiency compared to V ₂ O ₅ . Furthermore, the potential toxicity of V ₂ O ₅ and La doped V ₂ O ₅ samples were investigated using L. acidophilus and S. typhi bacteria. La doped V ₂ O ₅ nanoparticles improved the charge carrier separation and decreased the rate of recombination which significantly enhanced the photocatalytic and antibacterial activity.