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Abstract
30Li2O–55B2O3–5ZnO-7.5TiO2-2.5V2O5 (mol%) glass is heat treated at different temperatures and durations to study the growth of nanocrystalline phases and their effect on various properties. X-ray diffraction (XRD) confirmed the crystallization of the nano-Zn4O(BO2)6, LiV6O13 and Li0·74(Ti3O6) phases along with glass matrix. Photoluminescence emission spectrum also confirmed the crystallization of nanostructured Zn4O(BO2)6 in the glass matrix. The glass ceramics contain various borate groups as observed in Fourier transform infrared (FTIR) spectra. The optical band gap of glass-ceramics lies in the range of 3.46–3.56eV. Fast and maximum degradation efficiency (72%) is observed for organic methylene blue dye for glass heat-treated at 520 °C for 10 min. The present nanocrystalline glass-ceramics could be good photocatalysts with higher thermal stability and inertness than polymeric/ceramic capped nanocrystalline photocatalysts. The present method could pave an alternative and efficient way to degrade the organic substances in UV–Visible light without using any capping agent.
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