Abstract
Single step auto ignited combustion technique has been used to prepare nanosized Y2Ti2O7 (YTO) and Y2Ti1.5Hf0.5O7 (YTHO). The structure of the samples analyzed by X-ray diffraction method is found to be cubic with space group (Z = 8). This is further confirmed using vibrational spectroscopic analysis. The average crystalline sizes of both the samples are calculated using Scherrer formula and using High Resolution Transmission Electron Microscopy. Energy dispersive spectroscopic analysis confirmed the presence of elements in the stoichiometric ratio. Optical studies of the as prepared samples are carried out by UV–Vis and Photoluminescence spectroscopy. The optical band gap determined using Kubelka–Munk formalism and Tauc’s plot are found to be 3.8 and 3.1 eV for YTO and YTHO, respectively. Photocatalytic activity is analyzed by the degradation of methylene blue (MB) under UV light. The percentage degradation of YTO and YTHO are 40 and 19.5% respectively. The rate of degradation is also analyzed for both the samples.
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Anila, S., John, A., Thomas, J.K. et al. Structural and optical characterization of Y2Ti2O7 and Y2Ti1.5Hf0.5O7 nanomaterials. J Mater Sci: Mater Electron 28, 18497–18507 (2017). https://doi.org/10.1007/s10854-017-7797-2
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DOI: https://doi.org/10.1007/s10854-017-7797-2