Influence of Zirconium concentration on Optical characteristics of nanostructured Zirconium diselenite Inorganic cation exchanger

Zirconium diselenite (Zr(SeO3)(2)) nanoparticles have been synthesized using three different molar concentrations (0.25:1, 0.5:1 and 0.75:1) of ZrO(NO3)(2)center dot xH(2)O and SeO2 by precipitation method. The synthesized particles have been characterised using XRD, FTIR, FESEM and UV-Visible spectroscopy. From the XRD result, the zirconium diselenite particles are orthorhombic structure and better crystallinity is noticed in 0.25:1M concentration compared to other two concentrations. The FTIR result is confirmed the presence of Zr(SeO3)(2) in all the three spectrum at 885 cm(-1), 739 cm(-1) and 491 cm(-1) and from the FESEM images, cubic, hexagonal and polygonal shapes of Zr(SeO3)(2) particles are detected. In the UV-Visible analysis, optical absorption is higher for 0.25: 1M concentration in the visible, region when compared to other two concentrations and maximum optical absorption is found around 387 nm and band gap energy of the samples is found to be around 3.95eV.