Abstract
ABSTRACTThe current work reports the hydrothermal preparation of pure TiO2 and Sm3+ ion-doped TiO2 nanoparticles and the influence of samarium ion doping in the TiO2 host lattice. The as-synthesized both pure and Sm3+-doped TiO2 nano samples were extensively characterized by powder X-ray diffraction (XRD), high-resolution transmission electron microscopy (HR-TEM), energy dispersive X-ray spectroscopy (EDX) and UV–VIS spectroscopy. XRD pattern reveals the crystalline size and phase of the nanoparticles and the formation of spherical morphology was confirmed by HR-TEM observation. The incorporation of Sm in TiO2 is confirmed by EDX. The optical properties of TiO2 and Sm3+:TiO2 nanoparticles have been studied using diffuse reflectance spectroscopy analysis. The addition of the dopant ion markedly increases the bandgap from 3.39 to 3.46 eV. The photocatalytic activity of the crystalline as-synthesized nanoparticles was examined for the degradation of Rhodamine B induced by UV irradiation and the degradation efficiency is also reported.
Highlights
Nanostructured materials are studied vastly due to their enhanced properties compared to its bulk counterparts
The assynthesized both pure and Sm3+-doped TiO2 nano samples were extensively characterized by powder X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), energy dispersive X-ray spectroscopy (EDX) and UV–VIS spectroscopy
Pure and Sm3+-doped TiO2 nanoparticles were synthesized by the hydrothermal method
Summary
Nanostructured materials are studied vastly due to their enhanced properties compared to its bulk counterparts. TiO2 is used as a photocatalyst in photocatalytic degradation due to its optical activity [2]. Anatase TiO2 is more stable than rutile TiO2 and displays a better photocatalytic activity due to its wide bandgap [4]. TiO2 is the potential material in the industry due to its high optical transparency, thermal stability, chemically inactive and desirable mechanical properties [6]. Nano synthesis of rare-earth ions doped TiO2 Sm3+ in TiO2 and their photocatalytic activities under visible light irradiation have never been reported so far. The focus of the present work is to synthesize pure and doped nanoparticles using the hydrothermal method and to explain their structural, optical and photocatalytic properties
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