IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v14y2021i10p2869-d555529.html
   My bibliography  Save this article

Structural, Optical, and Magnetic Properties of Cobalt-Doped ZnAl 2 O 4 Nanosheets Prepared by Hydrothermal Synthesis

Author

Listed:
  • Thirumala Rao Gurugubelli

    (Physics Division, Department of Basic Sciences and Humanities, GMR Institute of Technology, GMR Nagar, Rajam 532127, India)

  • Bathula Babu

    (School of Mechanical Engineering, Yeungnam University, Gyeongsan 712-749, Korea)

  • Kisoo Yoo

    (School of Mechanical Engineering, Yeungnam University, Gyeongsan 712-749, Korea)

Abstract

Nanomaterials with collective optical and magnetic properties are called smart or functional materials and have promising applications in many fields of science and technology. Undoped and Co-doped ZnAl 2 O 4 were prepared using a co-precipitation-assisted hydrothermal method. A systematic investigation was carried out to understand the effects of the Co concentration on the crystalline phase, morphology, and optical and magnetic properties of Co-doped ZnAl 2 O 4 . X-ray diffraction confirmed the cubic spinel structure with the Fd3m space group, and there was no impurity phase. X-ray photoelectron spectroscopy of Co-doped ZnAl 2 O 4 confirmed the existence of Zn, Al and O, and the Co in the optimized sample of ZAO-Co-3 confirmed the oxidation state of cobalt as Co 2+ . Transmission electron microscopy of pure and Co-doped ZnAl 2 O 4 revealed micro-hexagons and nanosheets, respectively. The optical absorption results showed that the bandgap of ZnAl 2 O 4 decreased with increasing Co concentration. The hysteresis loop of Co-doped ZnAl 2 O 4 revealed clear ferromagnetic behavior at room temperature. The as-prepared materials are suitable for energy storage applications, such as in supercapacitors and fuel cells. This work aims to focus on the effect of cobalt ions in different concentrations on structural, optical and magnetic properties.

Suggested Citation

  • Thirumala Rao Gurugubelli & Bathula Babu & Kisoo Yoo, 2021. "Structural, Optical, and Magnetic Properties of Cobalt-Doped ZnAl 2 O 4 Nanosheets Prepared by Hydrothermal Synthesis," Energies, MDPI, vol. 14(10), pages 1-9, May.
  • Handle: RePEc:gam:jeners:v:14:y:2021:i:10:p:2869-:d:555529
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/14/10/2869/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/1996-1073/14/10/2869/
    Download Restriction: no
    ---><---

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:14:y:2021:i:10:p:2869-:d:555529. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.