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Related Experiment Video

Updated: Aug 8, 2025

Fabrication of VB2/Air Cells for Electrochemical Testing
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Two-Dimensional Ultrathin CeVO4 Nanozyme: Fabricated through Non-Oxidic Material.

Kuldeep Kumar1, Tanmoy Maity2, Leela S Panchakarla1

  • 1Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India.

ACS Omega
|February 27, 2023
PubMed
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Researchers developed a novel method to create 2D ultrathin cerium vanadate (CeVO4) nanosheets. These 2D CeVO4 nanosheets show superior peroxidase-mimicking activity for detecting biomolecules like glutathione.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemistry

Background:

  • Mixed transition metal oxides (MTMOs) are promising nanomaterials with diverse applications.
  • MTMOs are typically studied in 3D or 1D morphologies, with 2D forms being underexplored due to synthesis challenges.
  • Difficulties in exfoliating 2D oxide layers limit the exploitation of MTMOs' unique properties.

Purpose of the Study:

  • To develop a novel synthetic route for fabricating 2D ultrathin cerium vanadate (CeVO4) nanosheets (NS).
  • To investigate the peroxidase-mimicking activity of the synthesized 2D CeVO4 NS.
  • To explore the application of these 2D CeVO4 NS as enzyme mimics for biomolecule detection.

Main Methods:

  • Exfoliation of CeVS3 via Li+ ion intercalation.

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  • Subsequent oxidation of CeVS3 under hydrothermal conditions.
  • Characterization of the synthesized 2D ultrathin CeVO4 NS.

    • Main Results:

    • Successfully fabricated 2D ultrathin CeVO4 NS with adequate stability.
    • Demonstrated excellent peroxidase-mimicking activity with a low K M value (0.04 mM), outperforming natural peroxidase and CeVO4 nanoparticles.
    • Achieved efficient detection of glutathione with a low limit of detection (LOD) of 53 nM.

    Conclusions:

    • A novel and effective method for synthesizing 2D ultrathin CeVO4 NS was established.
    • The synthesized 2D CeVO4 NS exhibit superior enzyme-mimicking properties.
    • These 2D CeVO4 NS hold significant potential for sensitive biomolecule detection applications.