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Synthesis, structural, band gap, and optical properties of Ba3(PO4)2 hierarchical structural materials

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Abstract

Ba3(PO4)2 structure with Rhombohedral phase was prepared by a facile wet chemical method. In this experiment, NaOH is used as a surfactant for various pH values. The prepared samples were analyzed using several analytical techniques such as XRD, SEM, EDX, UV–Visible absorption, and photoluminescence spectroscopy. Orthorhombic (BaHPO4) phase appeared at pH7 and rhombohedral Ba3(PO4)2 phase formed at pH13 show that the pH value was very important factor for the final product formation and morphology. The phase changes have been monitored through the XRD data analysis. EDX analysis confirms the Ba:P ratios as 3:2. Band gap energy of synthesized microstructure was found to be 3.60 eV for rhombohedral phase (pH13) and 4.89 eV for orthorhombic phase (pH7), respectively. Significantly, the prepared sample at pH13, an intense blue light, emitted a narrow band in the broad band emission spectra, which have been explained from the transition of 3T1→1A1 in PO43− ions. In the meantime, an apparent red shift was observed while changing the excitation wavelengths.

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Data will be made available on reasonable request of the authors.

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Acknowledgements

P.C. Nagajyothi and Jaesool Shim acknowledges the National Research Foundation of Korea (NRF) Grants funded by the Korean government (2020R1A4A1019227 and 2020R1A2C1012439).

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Authors and Affiliations

  1. Department of Humanities and Sciences, Annamacharya Institute of Technology and Sciences, Rajampet, Andhra Pradesh, India

    Lavuluri Obulapathi, Seelam Harinath Babu & Boggala Sreenivasulu

  2. School of Mechanical Engineering, Yeungnam University, Gyeongsan, 384541, Republic of Korea

    Jaesool Shim & P. C. Nagajyothi

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  1. Lavuluri Obulapathi
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  2. Seelam Harinath Babu
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  3. Boggala Sreenivasulu
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  4. Jaesool Shim
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  5. P. C. Nagajyothi
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Contributions

LO, SHB have contributed equally to this work. LO and SHB guided all the experimental design, and led the manuscript preparation. JS and PCN did the data analysis, and prepared the draft manuscript. All authors have given approval to the final version of the manuscript.

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Correspondence to Lavuluri Obulapathi or P. C. Nagajyothi.

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Obulapathi, L., Babu, S.H., Sreenivasulu, B. et al. Synthesis, structural, band gap, and optical properties of Ba3(PO4)2 hierarchical structural materials. J Mater Sci: Mater Electron 33, 15617–15626 (2022). https://doi.org/10.1007/s10854-022-08466-5

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  • DOI: https://doi.org/10.1007/s10854-022-08466-5

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