Adsorption and photocatalytic study of calcium titanate (CaTiO3) for the arsenic removal from water

We report the arsenite adsorption in dark conditions and different pH by CaTiO₃ perovskite nanoparticles. Its photocatalytic properties for oxidizing the arsenite As(III), to arsenate As(V), under UV light source have been studied in this research. CaTiO₃ (CTO), nanoparticles have a high As(III) removal capacity. Nearly 70% As(III) was oxidized in few minutes, and achieves full oxidizing of As(III) to As(V) in around 90 min. Our results suggest the prepared CTO is a promising candidate for arsenic removal.