Direct growth of nanotubes and graphene nanoflowers on electrochemical platinum electrodes

Irene Taurino; Arnaud Magrez; Federico Matteini; László Forró; Giovanni De Micheli; Sandro Carrara

doi:10.1039/C3NR03283C

Direct growth of nanotubes and graphene nanoflowers on electrochemical platinum electrodes†

Irene Taurino,*^a Arnaud Magrez,^b Federico Matteini,^c László Forró,^d Giovanni De Micheli^a and Sandro Carrara^a

* Corresponding authors

^a Laboratory of Integrated Systems, EPFL – École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
E-mail: irene.taurino@epfl.ch
Fax: +41 21 69 34 225
Tel: +41 21 69 36878

^b Crystal Growth Facility, EPFL – École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland

^c Laboratory of Semiconductor Materials, EPFL – École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland

^d Laboratory of Physics of Complex Matter, EPFL – École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland

Abstract

Multi-walled carbon nanotubes and graphene nanoflowers were grown by a catalytic chemical vapor deposition process on metal surfaces. Electrodeposition was used as a versatile technique to obtain three different iron catalyst coatings on platinum microelectrodes. The influence of growth parameters on carbon deposits was investigated. Characterization was carried out by scanning electron microscopy and Raman spectroscopy. A chemical treatment in sulphuric acid produced an increased voltammetric background current. In Raman spectra, the effect of the chemical treatment is seen as a more pronounced sp³ hybridisation mode of C resulting from surface functionalization of the C nanomaterials. Overall, the hybrid electrodes we produced exhibit a promising performance for oxidase-based array biosensors. Therefore, our study opens the possibility of integrating the hybrid electrodes in biochip applications.

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DOI: https://doi.org/10.1039/C3NR03283C
Article type: Paper
Submitted: 26 Jun 2013
Accepted: 03 Oct 2013
First published: 14 Oct 2013

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Nanoscale, 2013,5, 12448-12455

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Direct growth of nanotubes and graphene nanoflowers on electrochemical platinum electrodes

I. Taurino, A. Magrez, F. Matteini, L. Forró, G. De Micheli and S. Carrara, Nanoscale, 2013, 5, 12448 DOI: 10.1039/C3NR03283C

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Nanoscale

Direct growth of nanotubes and graphene nanoflowers on electrochemical platinum electrodes†

Abstract

Supplementary files

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Direct growth of nanotubes and graphene nanoflowers on electrochemical platinum electrodes

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