Specific charge separation of Sn doped MgO nanoparticles for photocatalytic activity under UV light irradiation

Abstract

Recent developments of material science envisioned to synthesis nanomaterials with unique characteristics and potential applications in various fields. In this study present the hydrothermal synthesis pure and Sn doped MgO nanoparticles and investigation their photocatalytic properties. The synthesized Sn doped MgO nanoparticles was characterisation using X-ray diffraction (XRD), Ultraviolet–visible (UV–vis), photoluminescence (PL), and Fourier transform infrared (FTIR) spectroscopy. The FTIR spectra showed the presence of MgO and Sn nanoparticles by exposing relevant absorption bands against definite wavenumbers. The scanning electron microscopic (SEM) images of Sn-doped MgO nanoparticles was used for determination their morphological characteristic and the energy dispersive X-ray (EDX) analysis was used for the surface element quantitative information. Transmission electron microscopy (TEM) the average size of the particles as recorded in the TEM images was around 50 nm for the pristine sample and around 20 nm for the Sn doped MgO nanoparticle thereby indicating the fact that tin substitution has indeed brought about a considerable decrease in the particle size. Crystallographic interpretations of the as prepared sample were done in the reciprocal space by recording the selected area electron diffraction patterns (SAED) of pure MgO and doped Sn/MgO nanoparticle. With increasing the quantity of Sn in the sample, it was discovered that the dielectric parameters of the obtained samples, such as the dielectric constant and dielectric loss, decreased as a function of the applied frequency. Vibrating sample magnetometer (VSM) the magnetic properties of synthesised samples were examinations and shows that the magnetization (Ms) of samples decrease with increases the Sn concentration in n-MgO composites. The methylene blue (MB) and phenol degradation was used for determination of photocatalytic activity of Sn doped n-MgO composites and undoped n-MgO under UV irradiation. The observed MB and phenol removal efficiency depends on the amount of loaded Sn doped n-MgO catalyst.