STRUCTURAL PROFILING AND OPTICAL PROPERTY STUDIES ON MAGNESIUM DOPED VANADIUM PENTOXIDE

Vanadium pentoxide is an attractive material with extensive applications, such as cathode material in lithium batteries, as catalyst in many industrial chemical reactions and in electro chromic displays. Vanadium pentoxide is the best one among the transition metals, because it has broad range of oxidation state, layered structure, high energy density, and low cost. Doping of these metal oxides with transition metals improves their electrochemical and optical properties. The Magnesium doped Vanadium pentoxide films exhibit characteristics suitable for lithium ion batteries and electrochromic window applications, the optimization of the functionality depending on the doping of Magnesium content. Here, Magnesium doped Vanadium pentoxide (Mg-V2O5) nanoparticles (NPs) were synthesized using solid state reaction. The solid-state reaction is the most commonly used method for the preparation of the polycrystalline solids from the compound mixture of solid starting materials, it is necessary to heat them into abnormal higher temperatures often to 1000 to 1500 degree celsius in order for the reaction to happen. The structural, morphological and optical analysis of the NPs were examined using X-Ray diffraction spectra and UV-Visible absorption spectra. The XRD pattern obtained is in good agreement with the Vanadium pentoxide single phase. It is evidence of perfect doping of MgOon Vanadium pentoxide highlighting the possibility of forming substitutional solid solutions. UV-Visible absorption spectra reveal the board light absorption capability, the spectral absorbance has shown considerable increase in the optical wavelength region ranging from ultraviolet to visible radiation. From the Tauc plot analysis band gap energy was estimated, it has been found that the band gap energy decreases from the pure Vanadium pentoxide to the doped Vanadium pentoxide -MgOcompound.