2026-04-17T23:18:08Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/110972025-11-26T01:05:35Zcom_10259_5822com_10259_5086com_10259_2604col_10259_5823
Stamatin, Serban N.
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Borghei, Maryam
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600
Dhiman, Rajnish
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Andersen, Shuang Ma
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Ruiz Fernández, Virginia
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600
0000-0002-0466-0634
Kauppinen, Esko I.
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600
Skou, Eivind M.
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2025-11-25T09:34:47Z
2025-11-25T09:34:47Z
2015-01
0926-3373
https://hdl.handle.net/10259/11097
10.1016/j.apcatb.2014.07.005
A non-covalent functionalization for multi-walled carbon nanotubes has been used as an alternative to the damaging acid treatment. Platinum nanoparticles with similar particle size distribution have been deposited on the surface modified multi-walled carbon nanotubes. The interaction between platinum nanoparticles and multi-walled carbon nanotubes functionalized with 1-pyrenecarboxylic acid is studied and its electrochemical stability investigated. This study reveals the existence of a platinum-support interaction and leads to three main conclusions. First, the addition of 1-pyrenecarboxylic acid is improving the dispersion of platinum nanoparticles, leading to an improved electrochemical activity towards oxygen reduction reaction. Second, the investigations regarding the electrochemical stability showed that the platinum-support interaction plays an important role in improving the long-term stability by as much as 20%. Third, post-mortem microscopy analysis showed a surprising effect. During the electrochemical stability investigations concerned with carbon corrosion it was found that the multi-walled carbon nanotubes were undergoing severe structural change, transforming finally into carbon spheres.
The authors would like to acknowledge Casper F. Nørgaard for his help in improving the overall quality of the manuscript. This work has been supported by the Danish project: PEMFC Catalysts for Boosted Activity and Enhanced Durability (Energinet.dk project no. 2011-1-10669), PEM Durability and Lifetime Part III (Energinet.dk project no. 2013-1-12064), 4M Centre (The Danish Council for Strategic Research project no. 12-132710) Academy of Finland project: Novel carbon material networks as ultrasensitive/efficient platforms for analysis and electroanalysis (No. 130533) and made use of the Aalto University Nanomicroscopy Centre (Aalto-NMC) premises.
application/pdf
eng
Elsevier
Applied Catalysis B: Environmental. 2015, V. 162, p. 289-299
https://doi.org/10.1016/j.apcatb.2014.07.005
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Oxygen reduction reaction
Platinum nanoparticles
Carbon nanotubes
Electrochemical stability
Electrocatálisis
Electrocatalysis
Activity and stability studies of platinized multi-walled carbon nanotubes as fuel cell electrocatalysts
info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
Applied Catalysis B: Environmental
162
289
299
THUMBNAIL
Stamatin-acbe_2015.pdf.jpg
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Stamatin-acbe_2015.pdf
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10259/11097
oai:riubu.ubu.es:10259/11097
2025-11-26 02:05:35.856
Repositorio Institucional de la Universidad de Burgos
bubrep@ubu.es
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