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Tailoring the bandgap, magnetic and photocatalytic behavior of CdS:Nd nanoparticles

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Abstract

We report the fabrication of CdS:Nd nanoparticles (NPs) via an economical co-precipitation method, giving adjustable optical, magnetic and photocatalytic behavior of the nanocrystalline CdS by varying the Nd ion do** concentration. The sensible do** of Nd ions into the CdS matrix was confirmed by various structural characterization techniques. Transmission electron microscopy images demonstrated the basic spheroid shape of the nanoparticles, with sizes in the range of 8–10 nm. A do** concentration-dependent redshift was observed in the CdS NP spectra, resulting from the decrease in the bandgap. The M-H curves illustrate that the undoped sample is diamagnetic, the 2 at% Nd sample is ferromagnetic, and the 4 at% Nd sample is superparamagnetic at room temperature. Photocatalytic measurements revealed that the CdS:Nd (4 at%) sample displayed better photocatalytic activity than undoped CdS NPs. As per literature, this could be the first report on the CdS:Nd system and we believed that it will be more beneficial for the further research on the CdS:Nd system.

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Acknowledgements

This work was supported by the National Research Foundation of Korea funded by the Ministry of Science, ICT and Fusion Research (NRF-20201G1A1014959). Y.L. Kim acknowledges the financial support from Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2019R1I1A3A01056567).

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Authors and Affiliations

  1. Department of Electronic Engineering, Gangneung-Wonju National University, Gangneung, 25457, Republic of Korea

    B. Poornaprakash & Y. L. Kim

  2. School of Mechanical Engineering, Yeungnam University, Gyeongsan, 38541, South Korea

    S. V. Prabhakar Vattikuti

  3. School of Electronics Engineering, Kyungpook National University, Daegu, 41566, South Korea

    M. Siva Pratap Reddy

  4. School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea

    Vasudeva Reddy Minnam Reddy

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  1. B. Poornaprakash
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  2. S. V. Prabhakar Vattikuti
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  3. Y. L. Kim
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  4. M. Siva Pratap Reddy
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  5. Vasudeva Reddy Minnam Reddy
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Correspondence to Y. L. Kim, M. Siva Pratap Reddy or Vasudeva Reddy Minnam Reddy.

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Poornaprakash, B., Vattikuti, S.V.P., Kim, Y.L. et al. Tailoring the bandgap, magnetic and photocatalytic behavior of CdS:Nd nanoparticles. Appl. Phys. A 127, 602 (2021). https://doi.org/10.1007/s00339-021-04763-8

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  • DOI: https://doi.org/10.1007/s00339-021-04763-8

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