Carboxylated, Fe-Filled Multiwalled Carbon Nanotubes as Versatile Catalysts for O2 Reduction and H2 Evolution Reactions at Physiological pH

M. Victoria Bracamonte, Michele Melchionna, Antoine Stopin, Angela Giulani, Claudio Tavagnacco, Yann Garcia, Paolo Fornasiero, Davide Bonifazi, Maurizio Prato

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

The development of new electrocatalysts for the oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER) at physiological pH is critical for several fields, including fuel cells and biological applications. Herein, the assembly of an electrode based on carboxyl-functionalised hydrophilic multiwalled carbon nanotubes (MWCNTs) filled with Fe phases and their excellent performance as electrocatalysts for ORR and HER at physiological pH are reported. The encapsulated Fe dramatically enhances the catalytic activity, and the graphitic shells play a double role of efficiently mediating the electron transfer to O<inf>2</inf> and H<inf>2</inf>O reactants and providing a cocoon that prevents uncontrolled Fe oxidation or leaching.

langue originaleAnglais
Pages (de - à)12769-12777
Nombre de pages9
journalChemistry: A European Journal
Volume21
Numéro de publication36
Les DOIs
étatPublié - 1 sept. 2015

Empreinte digitale

Multiwalled carbon nanotubes (MWCN)
Electrocatalysts
Hydrogen
Oxygen
Catalysts
Leaching
Fuel cells
Catalyst activity
Oxidation
Electrodes
Electrons

Citer ceci

Bracamonte, M. Victoria ; Melchionna, Michele ; Stopin, Antoine ; Giulani, Angela ; Tavagnacco, Claudio ; Garcia, Yann ; Fornasiero, Paolo ; Bonifazi, Davide ; Prato, Maurizio. / Carboxylated, Fe-Filled Multiwalled Carbon Nanotubes as Versatile Catalysts for O2 Reduction and H2 Evolution Reactions at Physiological pH. Dans: Chemistry: A European Journal. 2015 ; Vol 21, Numéro 36. p. 12769-12777.
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abstract = "The development of new electrocatalysts for the oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER) at physiological pH is critical for several fields, including fuel cells and biological applications. Herein, the assembly of an electrode based on carboxyl-functionalised hydrophilic multiwalled carbon nanotubes (MWCNTs) filled with Fe phases and their excellent performance as electrocatalysts for ORR and HER at physiological pH are reported. The encapsulated Fe dramatically enhances the catalytic activity, and the graphitic shells play a double role of efficiently mediating the electron transfer to O2 and H2O reactants and providing a cocoon that prevents uncontrolled Fe oxidation or leaching.",
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Carboxylated, Fe-Filled Multiwalled Carbon Nanotubes as Versatile Catalysts for O2 Reduction and H2 Evolution Reactions at Physiological pH. / Bracamonte, M. Victoria; Melchionna, Michele; Stopin, Antoine; Giulani, Angela; Tavagnacco, Claudio; Garcia, Yann; Fornasiero, Paolo; Bonifazi, Davide; Prato, Maurizio.

Dans: Chemistry: A European Journal, Vol 21, Numéro 36, 01.09.2015, p. 12769-12777.

Résultats de recherche: Contribution à un journal/une revueArticle

TY - JOUR

T1 - Carboxylated, Fe-Filled Multiwalled Carbon Nanotubes as Versatile Catalysts for O2 Reduction and H2 Evolution Reactions at Physiological pH

AU - Bracamonte, M. Victoria

AU - Melchionna, Michele

AU - Stopin, Antoine

AU - Giulani, Angela

AU - Tavagnacco, Claudio

AU - Garcia, Yann

AU - Fornasiero, Paolo

AU - Bonifazi, Davide

AU - Prato, Maurizio

PY - 2015/9/1

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AB - The development of new electrocatalysts for the oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER) at physiological pH is critical for several fields, including fuel cells and biological applications. Herein, the assembly of an electrode based on carboxyl-functionalised hydrophilic multiwalled carbon nanotubes (MWCNTs) filled with Fe phases and their excellent performance as electrocatalysts for ORR and HER at physiological pH are reported. The encapsulated Fe dramatically enhances the catalytic activity, and the graphitic shells play a double role of efficiently mediating the electron transfer to O2 and H2O reactants and providing a cocoon that prevents uncontrolled Fe oxidation or leaching.

KW - electrochemistry

KW - hydrogen evolution reaction

KW - iron

KW - nanotubes

KW - oxygen reduction reaction

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