Biosynthesis of tin oxide nanoparticles using Psidium Guajava leave extract for photocatalytic dye degradation under sunlight

In present investigation green synthesis of tin oxide (SnO2) nanoparticles has been carried out by simple, eco-friendly and low cost process using guava (Psidium Guajava) leaf extract. The as-synthesized SnO2 nanoparticles were characterized by UV-visible spectroscopy, Fourier transform infrared spectroscopy, X-ray powder diffraction, Transmission electron microscopy, Field emission scanning electron microscope and Energy-dispersive spectroscopy. The photocatalytic activity of the nanoparticles was analyzed for the photodegradation of reactive yellow 186 dye under sunlight. SnO2 nanoparticles within size range 8-10 nm effectively degraded 90% of the dye within 180 min at a rate constant of 0.00476 min(-1). (C) 2017 Elsevier B.V. All rights reserved.