IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v18y2025i2p305-d1565003.html
   My bibliography  Save this article

Electro-Oxidation of Glycerol on Core–Shell M@Pt/C (M = Co, Ni, Sn) Catalysts in Alkaline Medium

Author

Listed:
  • Rudyere Nascimento Silva

    (Department of Chemistry, Environment and Food—DQA, Campus Manaus Centro, Federal Institute of Education, Science and Technology of Amazonas—IFAM, Manaus 69020-120, AM, Brazil
    Laboratory of Electrochemistry and Energy—LEEN, Department of Chemistry, Federal University of Amazonas—UFAM, Manaus 69088-900, AM, Brazil)

  • Leandro Aparecido Pocrifka

    (Laboratory of Electrochemistry and Energy—LEEN, Department of Chemistry, Federal University of Amazonas—UFAM, Manaus 69088-900, AM, Brazil)

  • Ermete Antolini

    (Scuola di Scienza dei Materiali, 16016 Cogoleto, Italy)

  • Raimundo Ribeiro Passos

    (Laboratory of Electrochemistry and Energy—LEEN, Department of Chemistry, Federal University of Amazonas—UFAM, Manaus 69088-900, AM, Brazil)

Abstract

This study explores the development of core–shell electrocatalysts for efficient glycerol oxidation in alkaline media. Carbon-supported M@Pt/C (M = Co, Ni, Sn) catalysts with a 1:1 atomic ratio of metal (M) to platinum (Pt) were synthesized using a facile sodium borohydride reduction method. The analysis confirmed the formation of the desired core–shell structure, with Pt dominating the surface as evidenced by energy-dispersive X-ray spectroscopy (EDS). X-ray diffraction (XRD) revealed the presence of a face-centered cubic (fcc) Pt structure for Co@Pt/C and Ni@Pt/C. Interestingly, Sn@Pt/C displayed a PtSn alloy formation indicated by shifted Pt peaks and the presence of minor Sn oxide peaks. Notably, no diffraction peaks were observed for the core metals, suggesting their amorphous nature. Electrocatalytic evaluation through cyclic voltammetry (CV) revealed superior glycerol oxidation activity for Co@Pt/C compared to all other catalysts. The maximum current density followed the order Co@Pt/C > Ni@Pt/C > Sn@Pt/C > Pt/C. This highlights the effectiveness of the core–shell design in enhancing activity. Furthermore, Sn@Pt/C displayed remarkable poisoning tolerance attributed to a combined effect: a bifunctional mechanism driven by Sn oxides and an electronic effect within the PtSn alloy. These findings demonstrate the significant potential of core–shell M@Pt/C structures for designing highly active and poisoning-resistant electrocatalysts for glycerol oxidation. The presented approach paves the way for further development of optimized catalysts with enhanced performance and stability aiming at future applications in direct glycerol fuel cells.

Suggested Citation

  • Rudyere Nascimento Silva & Leandro Aparecido Pocrifka & Ermete Antolini & Raimundo Ribeiro Passos, 2025. "Electro-Oxidation of Glycerol on Core–Shell M@Pt/C (M = Co, Ni, Sn) Catalysts in Alkaline Medium," Energies, MDPI, vol. 18(2), pages 1-14, January.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:2:p:305-:d:1565003
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/18/2/305/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/18/2/305/
    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:18:y:2025:i:2:p:305-:d:1565003. 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.