This paper describes the exohedral N-decoration of multiwalled carbon nanotubes (MWCNTs) with NH-aziridine groups via [2 + 1] cycloaddition of a tert-butyl-oxycarbonyl nitrene followed by controlled thermal decomposition of the cyclization product. The chemical grafting with N-containing groups deeply modifies the properties of the starting MWCNTs, generating new surface microenvironments with specific base (Brønsted) and electronic properties. Both of these features translate into a highly versatile single-phase heterogeneous catalyst (MW@NAz) with remarkable chemical and electrochemical performance. Its surface base character promotes the Knoevenagel condensation with activity superior to that of related state of the art N-doped and N-decorated carbon nanomaterials; the N-induced electronic surface redistribution drives the generation of high-energy surface “C” sites suitable for O2 activation and its subsequent electrochemical reduction (ORR).

Aziridine-Functionalized Multiwalled Carbon Nanotubes: Robust and Versatile Catalysts for the Oxygen Reduction Reaction and Knoevenagel Condensation / Tuci, Giulia; Luconi, Lapo; Rossin, Andrea; Berretti, Enrico; Ba, Housseinou; Innocenti, Massimo; Yakhvarov, Dmitry; Caporali, Stefano; Pham-Huu, Cuong; Giambastiani, Giuliano. - In: ACS APPLIED MATERIALS & INTERFACES. - ISSN 1944-8244. - STAMPA. - 8:(2016), pp. 30099-30106. [10.1021/acsami.6b09033]

Aziridine-Functionalized Multiwalled Carbon Nanotubes: Robust and Versatile Catalysts for the Oxygen Reduction Reaction and Knoevenagel Condensation

TUCI, GIULIA;LUCONI, LAPO;BERRETTI, ENRICO;INNOCENTI, MASSIMO;CAPORALI, STEFANO;GIAMBASTIANI, GIULIANO
2016

Abstract

This paper describes the exohedral N-decoration of multiwalled carbon nanotubes (MWCNTs) with NH-aziridine groups via [2 + 1] cycloaddition of a tert-butyl-oxycarbonyl nitrene followed by controlled thermal decomposition of the cyclization product. The chemical grafting with N-containing groups deeply modifies the properties of the starting MWCNTs, generating new surface microenvironments with specific base (Brønsted) and electronic properties. Both of these features translate into a highly versatile single-phase heterogeneous catalyst (MW@NAz) with remarkable chemical and electrochemical performance. Its surface base character promotes the Knoevenagel condensation with activity superior to that of related state of the art N-doped and N-decorated carbon nanomaterials; the N-induced electronic surface redistribution drives the generation of high-energy surface “C” sites suitable for O2 activation and its subsequent electrochemical reduction (ORR).
2016
8
30099
30106
Tuci, Giulia; Luconi, Lapo; Rossin, Andrea; Berretti, Enrico; Ba, Housseinou; Innocenti, Massimo; Yakhvarov, Dmitry; Caporali, Stefano; Pham-Huu, Cuong; Giambastiani, Giuliano
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1085840
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