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Synthesis of nanoparticles of La2O3 and Ln3+: La2O3 phosphors by aloe vera gel-assisted precipitation method and study of their photoluminescence properties

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Abstract

The demand for nanomaterial is increasing day by day due to their wide ranging applications in many areas of science and technology. This has led to a rapid growth of nanotechnology. In this work, a simple route of synthesis for nanoparticle of La2O3 has been attempted. The aloe vera gel-assisted precipitation method was used to synthesize nanoparticle of undoped as well as doped La2O3. Four down-conversion compounds 1% Pr3+: La2O3, 1% Eu3+: La2O3, 1% Tb3+: La2O3 and 1% Dy3+: La2O3 were also synthesized by this technique. The aloe vera gel acts as a biosurfactant that controls the particle’s growth, thus minimizing the particle’s size. The structural, elemental, morphological, optical and photoluminescence characterization was carried out on these samples. The XRD and EDAX analysis reveals that the obtained compounds are in the hexagonal phase with high purity having nanocrystallite size. The optical bandgap and refractive index have been calculated using the UV–visible absorption spectra. The size of synthesized particles was from 48 to 64 nm, with a spherical shape, which was confirmed by SEM analysis.

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Acknowledgement

We are thankful to the DST-FIST program (SR/FST/PS-II/2017/20 (C)) of Applied Physics.

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Authors and Affiliations

  1. Luminescence Laboratory, Faculty of Technology and Engineering, Applied Physics Department, The Maharaja Sayajirao University of Baroda, Vadodara, 390001, India

    Kevil Shah, Kaushal Agheda, Mitesh Ahire, K V R Murthy & Biswajit Chakrabarty

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  1. Kevil Shah
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  2. Kaushal Agheda
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  3. Mitesh Ahire
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  4. K V R Murthy
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  5. Biswajit Chakrabarty
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Correspondence to Kevil Shah.

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Shah, K., Agheda, K., Ahire, M. et al. Synthesis of nanoparticles of La2O3 and Ln3+: La2O3 phosphors by aloe vera gel-assisted precipitation method and study of their photoluminescence properties. Bull Mater Sci 46, 186 (2023). https://doi.org/10.1007/s12034-023-03012-3

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  • DOI: https://doi.org/10.1007/s12034-023-03012-3

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