Synthesis and characterization of Bi2O3 NPS and photocatalytic application with methylene blue

Abstract

Bismuth oxide nanoparticle was synthesized by Hydrothermal method, with two different molar ratio of precipitating agent of NaOH which decided the variations of two samples (1:5) and (1:6) was added to observe its effect on structural, optical and photocatalytic behaviour. So the prepared bismuth oxide nano particle was characterized by X-ray Diffractometer to study about its crystalline properties. The crystal size was observed as 30.7 and 42.84 nm, The optical properties were characterized by using UV-Vis spectrometer and its band gap value was calculated as 2.74 eV and 2.42 eV respectively. Morphological studies were obtained by using scanning electron microscopy and the elemental X-ray analysis confirmed the proportions of Bi2O3 nanoparticles of two samples (1:5) and (1:6). FTIR Spectrometer studies explained the condensation of OH group accompanied by the formation of Bi2O3 which is strongly dependent on the pH of reaction. A lattice change was observed, symmetric and asymmetric bonds were analysed by using FTIR spectrometer. The binding energy and its energy level were analysed by using X-ray Photo electron Spectroscopy and its value was 292 and 534 eV, and also the hydrothermal synthesised Bi2O3 NPs was used to analysed the photocatalytic degradation of Methylene blue under the irradiation of LED white light.