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

doi:10.1002/chem.201501144

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

Unit of organic chemistry

Research output: Contribution to journal › Article › peer-review

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 O<inf>2</inf> and H<inf>2</inf>O reactants and providing a cocoon that prevents uncontrolled Fe oxidation or leaching.

Original language	English
Pages (from-to)	12769-12777
Number of pages	9
Journal	Chemistry: A European Journal
Volume	21
Issue number	36
DOIs	https://doi.org/10.1002/chem.201501144
Publication status	Published - 1 Sept 2015

Keywords

electrochemistry
hydrogen evolution reaction
iron
nanotubes
oxygen reduction reaction

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10.1002/chem.201501144

Cite this

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

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.",

keywords = "electrochemistry, hydrogen evolution reaction, iron, nanotubes, oxygen reduction reaction",

author = "Bracamonte, {M. Victoria} and Michele Melchionna and Antoine Stopin and Angela Giulani and Claudio Tavagnacco and Yann Garcia and Paolo Fornasiero and Davide Bonifazi and Maurizio Prato",

year = "2015",

month = sep,

day = "1",

doi = "10.1002/chem.201501144",

language = "English",

volume = "21",

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journal = "Chemistry: A European Journal",

issn = "0947-6539",

publisher = "Wiley-VCH Verlag",

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Bracamonte, MV, Melchionna, M, Stopin, A, Giulani, A, Tavagnacco, C, Garcia, Y, Fornasiero, P, Bonifazi, D & Prato, M 2015, 'Carboxylated, Fe-Filled Multiwalled Carbon Nanotubes as Versatile Catalysts for O₂ Reduction and H₂ Evolution Reactions at Physiological pH', Chemistry: A European Journal, vol. 21, no. 36, pp. 12769-12777. https://doi.org/10.1002/chem.201501144

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

Y1 - 2015/9/1

N2 - 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.

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

UR - http://www.scopus.com/inward/record.url?scp=84939779099&partnerID=8YFLogxK

U2 - 10.1002/chem.201501144

DO - 10.1002/chem.201501144

M3 - Article

SN - 0947-6539

VL - 21

SP - 12769

EP - 12777

JO - Chemistry: A European Journal

JF - Chemistry: A European Journal

IS - 36

ER -

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

Abstract

Keywords

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

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Keywords

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Physical Chemistry and characterization(PC2)

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