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Carboxylated Fe-filled MWCNTs as versatile catalysts for O2 reduction and H2 evolution reactions at neutral pH

Bracamonte, M. V., Melchionna, M, Stopin, A, Giuliani, A, Tavagnacco, C, Garcia, Y, Fornasiero, P, Bonifazi, Davide and Prato, M 2015. Carboxylated Fe-filled MWCNTs as versatile catalysts for O2 reduction and H2 evolution reactions at neutral pH. Chemistry - a European Journal 21 (36) , pp. 12769-12777. 10.1002/chem.201501144

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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.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Subjects: Q Science > QD Chemistry
Publisher: WileyBlackwell
ISSN: 0947-6539
Last Modified: 04 Jun 2017 08:41
URI: http://orca.cf.ac.uk/id/eprint/82875

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