Degradation of Methylene Blue Dye by TiO 2 Nanoparticles Biologically Synthesized Using Leaf Extract of Citrus Aurantifolia

A viable alternative approach fir the synthesis of metal and oxide nanmaterials is the low cost nontoxic biosynthesis method. In this study, TiO2 nanoparticles were synthesized using the lemon leaf extract. Calcining the synthesized powder at 150–450 °C resulted in single phase anatase spherical particles (6–14 nm) of titania and band gap decreased from 3.34 to 3.29 eV. Raman studies exhibit the prominent bands assignable to the anatase phase. MB blue dye degraded by 94% in 180 min (pH-11). The nanoparticles could be reused for eight cycles with a 4% decrease in the degradation efficiency.