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Dopant-induced red emission, paramagnetism, and hydrogen evolution of diluted magnetic semiconductor ZnS: Eu nanoparticles

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Abstract

Cubic-structured europium (Eu) doped zinc sulfide (ZnS) nanoparticles (NPs) were prepared via refluxing at 150 °C. Absolute structural studies showed that Eu+ ions were successfully substituted into the ZnS host lattice and changed the original structure of the host. As-fabricated ZnS:Eu NPs exhibited typical red emission due to the transition of the Eu dopant in the 5d0-7f1, 5d0-7f2, 5d0-7f3, and 5d0-7f4 energy levels of the 4f orbital of the dopant. The typical diamagnetic ZnS could be converted to tunable paramagnetic as a function of Eu-doping content. These NPs were quantified for hydrogen evolution through water splitting by artificial solar spectrum. Eu doping can drastically enhance the hydrogen (H2) evolution capability of ZnS, which is higher than that of bare ZnS NPs. The causes behind these engrossing results will be revealed. These interesting properties may find applications in optoelectronics, spintronics, and H2 evolution.

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Acknowledgements

This work was supported by the Technology Development Program (S3038568) funded by the Ministry of SMEs and Startups (MSS, Korea). This work also supported by the National Research Foundation of Korea funded by the Ministry of Science, ICT and Fusion Research (NRF-20201G1A1014959, NRF-2022R1I1A1 A01064248, 2021R1A4A2001658, and 2022R1A2C1003853). This work also supported by the National Research Foundation Korea funded by the Ministry of Science, ICT and Fusion Research (Grant No: 20201G1A1014959). Partially supported by NRF-2018R1A6 A1A03025761 and NRF-2018R1D1A1B07050766.

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Author notes

  1. These authors contributed equally to this work.

Authors and Affiliations

  1. Advanced Material Research Center, Kumoh National Institute of Technology, Gumi, 39177, Korea

    Siva Pratap Reddy Mallem

  2. Department of Robotics and Intelligent Machine Engineering/College of Mechanical and IT Engineering, Yeungnam University, Gyeongsan, 38541, Korea

    Dong-Yeon Lee

  3. Department of Physics, Government Degree College, Jaggampeta, East Godavari, 533435, India

    Peddathimmula Puneetha & Kalupudi Subramanyam

  4. Department of Physics, Sri Venkatewara University, Tirupati, 517501, India

    Varra Rajagopal Reddy

  5. Department of Electronic Engineering, Gangneung-Wonju National Univeristy, Gangneung, 25457, Korea

    Young Lae Kim

  6. Department of Materials Science and Engineering, Kumoh National Institute of Technology, Gumi, 39177, Korea

    Sung Jin An

  7. School of Materials Science and Engineering, Kyungpook National University, Daegu, 41566, Korea

    Kwi-Il Park

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  1. Siva Pratap Reddy Mallem
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  2. Peddathimmula Puneetha
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  5. Dong-Yeon Lee
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  6. Young Lae Kim
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Corresponding authors

Correspondence to Young Lae Kim, Sung Jin An or Kwi-Il Park.

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Mallem, S.P.R., Puneetha, P., Subramanyam, K. et al. Dopant-induced red emission, paramagnetism, and hydrogen evolution of diluted magnetic semiconductor ZnS: Eu nanoparticles. Korean J. Chem. Eng. 40, 722–726 (2023). https://doi.org/10.1007/s11814-022-1374-y

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  • DOI: https://doi.org/10.1007/s11814-022-1374-y

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