Enhanced Photocatalytic Degradation of CaTiO۳ and Sm@CaTiO۳ Nanoparticles for Wastewater Treatment and Solar Cell Applications

A one-step green synthesis approach has been used successfully to synthesize undoped and Sm-doped calcium titanate nanoparticles (NPs). In particular, we prepared undoped and Sm-doped CaTiO۳ NPs using Tridax procumbens leaf extract as the catalyst for the first time. From XRD analysis, the calculated crystallite size is ۲۳.۹۲ nm and ۲۴.۳۲ nm, respectively, for undoped and Sm-doped CaTiO۳ samples. From the UV-Vis analysis, the calculated band gap is ۳. ۵۹ eV and ۳.۵۶ eV respectively for the undoped CaTiO۳ and Sm-doped CaTiO۳ nanoparticles. Owing to their distinctive morphologies, flower-like CaTiO۳ NPs possess a high level of photocatalytic activity when exposed to UV light. As a result of varying degradation times, the synthesized material was used to photodegrade methylene blue dye. Under UV light irradiation, undoped and Sm@CaTiO۳ exhibited effective photocatalytic properties, which may explain the existence of active oxygen and hydroxyl radicals. During the cyclic activity, CaTiO۳ doped with Sm did not exhibit any changes in phase or structure, proving that it is highly stable during degradation.

کلیدواژه ها:

Perovskite Nanocomposites ، Green synthesis ، photocatalytic activity