Direct Electrochemical Activity and Stability of Capped Platinum Nanoparticles

Sara Cavaliere; Frédéric Raynal; Arnaud Etcheberry; Michel Herlem; Henri Perez

doi:10.4028/www.scientific.net/SSP.106.31

Paper Titles

Luminescence Properties of Neodymium-Doped Yttrium Aluminium Garnet Obtained by the Co-Precipitation Method Combined with the Mechanical Process
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High-Pressure Induced Structural Decomposition of RE-Doped YAG Nanoceramics
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Formation of Core-Shell Nanoparticles by Laser Ablation of Copper and Brass in Liquids
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Laser-Induced Size and Shape Transformation of Silver Colloidal Nanoparticles
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Direct Electrochemical Activity and Stability of Capped Platinum Nanoparticles
p.31

Precipitation of Nickel Hydroxides from Nickel Dodecylsulphate
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Microstructural Characterization of BaTiO₃ Ceramic Nanoparticles Synthesized by the Hydrothermal Technique
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Hybrid HAp-Maleic Anhydride Copolymer Nanocomposites Obtained by In Situ Functionalisation
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Review on the Production and Synthesis of Nanosized SnO₂
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HomeSolid State PhenomenaSolid State Phenomena Vol. 106Direct Electrochemical Activity and Stability of...

Direct Electrochemical Activity and Stability of Capped Platinum Nanoparticles

Abstract:

4-mercaptoaniline functionalised platinum particles of 2 nm diameter were synthesised and over-grafted with 2-thiophenecarbonyl chloride. The derivative particles were dispersed in DMSO and gave long term stable suspensions. The Langmuir-Blodgett technique was then used to build up stable Langmuir-Blodgett films and the electrochemical behaviour of these ultra-thin films towards oxygen reduction was investigated in an acidic medium. It revealed direct activity without any previous activation treatments despite of the presence of the organic shell at the particle surface. Furthermore, XPS experiments revealed that the organic crown was not significantly destroyed on prolonged cycling. The results open a way to study original and versatile platinum-based nanocomposites.

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Periodical:

Solid State Phenomena (Volume 106)

Pages:

31-34

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.106.31

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Online since:

September 2005

Authors:

Sara Cavaliere, Frédéric Raynal, Arnaud Etcheberry, Michel Herlem, Henri Perez

Keywords:

Langmuir-Blodgett Film, Oxygen Reduction, Platinum Nanoparticles, X-Ray Photoelectron Spectroscopy (XPS)

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