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Bimetallic Pt–Au nanoparticles supported on multi-wall carbon nanotubes as electrocatalysts for oxygen reduction

Author

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  • Félix-Navarro, R.M.
  • Beltrán-Gastélum, M.
  • Reynoso-Soto, E.A.
  • Paraguay-Delgado, F.
  • Alonso-Nuñez, G.
  • Flores-Hernández, J.R.

Abstract

Platinum-gold nanoparticles supported on multi-wall carbon nanotubes (MWCNT) with various Pt:Au ratios are prepared by microemulsion method for use as electrocatalysts in the oxygen reduction reaction (ORR). The influence of the Pt:Au ratio on the electrocatalytic activity during ORR is investigated in detail. The synthesized nanomaterials are analyzed by different physicochemical techniques. The electrocatalytic activity for oxygen reduction is evaluated using a rotating disk electrode (RDE) system. We report that the activity and oxygen reduction mechanism depends strongly on the Pt:Au ratio; in the case of Pt:Au ratio higher than 0.60, oxygen is reduced to water by a four electron process pathway, while at 0.33 ratio the reaction follows a two-electron-transfer mechanism.

Suggested Citation

  • Félix-Navarro, R.M. & Beltrán-Gastélum, M. & Reynoso-Soto, E.A. & Paraguay-Delgado, F. & Alonso-Nuñez, G. & Flores-Hernández, J.R., 2016. "Bimetallic Pt–Au nanoparticles supported on multi-wall carbon nanotubes as electrocatalysts for oxygen reduction," Renewable Energy, Elsevier, vol. 87(P1), pages 31-41.
    • Handle: RePEc:eee:renene:v:87:y:2016:i:p1:p:31-41
    DOI: 10.1016/j.renene.2015.09.060
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    Cited by:

    1. Jiajun Zhao & Cehuang Fu & Ke Ye & Zheng Liang & Fangling Jiang & Shuiyun Shen & Xiaoran Zhao & Lu Ma & Zulipiya Shadike & Xiaoming Wang & Junliang Zhang & Kun Jiang, 2022. "Manipulating the oxygen reduction reaction pathway on Pt-coordinated motifs," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    2. Beltrán-Gastélum, M. & Salazar-Gastélum, M.I. & Flores-Hernández, J.R. & Botte, G.G. & Pérez-Sicairos, S. & Romero-Castañon, T. & Reynoso-Soto, E. & Félix-Navarro, R.M., 2019. "Pt-Au nanoparticles on graphene for oxygen reduction reaction: Stability and performance on proton exchange membrane fuel cell," Energy, Elsevier, vol. 181(C), pages 1225-1234.
    3. Rodriguez, J.R. & Fuentes Moyado, S. & Oropeza-Guzman, M.T. & Aguirre, S.B. & Romo-Herrera, José & Huirache-Acuña, R. & Berhault, G. & Alonso-Núñez, G., 2016. "Methanol dehydrogenation and oxidation on Pt1–XNiX/CNTs at low temperature: Effect of Ni addition," Renewable Energy, Elsevier, vol. 99(C), pages 437-442.
    4. Mohideen, Mohamedazeem M. & Liu, Yong & Ramakrishna, Seeram, 2020. "Recent progress of carbon dots and carbon nanotubes applied in oxygen reduction reaction of fuel cell for transportation," Applied Energy, Elsevier, vol. 257(C).

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