NO2 and CO interaction with plasma treated Au-decorated MWCNTs: Detection pathways

R. Leghrib; E. Llobet; A. Felten; J. J. Pireaux; Z. Zanolli; J. C. Charlier; I. Suárez; C. Ewels

doi:10.1016/j.proche.2009.07.232

NO2 and CO interaction with plasma treated Au-decorated MWCNTs: Detection pathways

R. Leghrib, E. Llobet, A. Felten, J. J. Pireaux, Z. Zanolli, J. C. Charlier, I. Suárez, C. Ewels

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

Abstract

The detection mechanisms of gas sensors based on oxygen plasma functionalised multi wall carbon nanotubes (MWCNTs) and rf plasma-treated nanotubes decorated with gold nanoclusters are experimentally and theoretically investigated. Results from X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM) analysis are discussed. It is found that NO₂ detection involves the interaction with oxygenated vacancies and/ or Au nanoclusters present on the nanotube walls, while CO detection is significantly enhanced by the interaction with Au nanoclusters anchored at the nanotube sidewalls. These differences in detection pathways open the possibility for fabricating selective MWCNT sensors.

Original language	English
Pages (from-to)	931-934
Number of pages	4
Journal	Procedia Chemistry
Volume	1
Issue number	1
DOIs	https://doi.org/10.1016/j.proche.2009.07.232
Publication status	Published - 1 Sept 2009

Keywords

Carbon nanotubes
gas sensors

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10.1016/j.proche.2009.07.232

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title = "NO2 and CO interaction with plasma treated Au-decorated MWCNTs: Detection pathways",

abstract = "The detection mechanisms of gas sensors based on oxygen plasma functionalised multi wall carbon nanotubes (MWCNTs) and rf plasma-treated nanotubes decorated with gold nanoclusters are experimentally and theoretically investigated. Results from X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM) analysis are discussed. It is found that NO2 detection involves the interaction with oxygenated vacancies and/ or Au nanoclusters present on the nanotube walls, while CO detection is significantly enhanced by the interaction with Au nanoclusters anchored at the nanotube sidewalls. These differences in detection pathways open the possibility for fabricating selective MWCNT sensors.",

keywords = "Carbon nanotubes, gas sensors",

author = "R. Leghrib and E. Llobet and A. Felten and Pireaux, {J. J.} and Z. Zanolli and Charlier, {J. C.} and I. Su{\'a}rez and C. Ewels",

year = "2009",

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TY - JOUR

T1 - NO2 and CO interaction with plasma treated Au-decorated MWCNTs

T2 - Detection pathways

AU - Leghrib, R.

AU - Llobet, E.

AU - Felten, A.

AU - Pireaux, J. J.

AU - Zanolli, Z.

AU - Charlier, J. C.

AU - Suárez, I.

AU - Ewels, C.

PY - 2009/9/1

Y1 - 2009/9/1

N2 - The detection mechanisms of gas sensors based on oxygen plasma functionalised multi wall carbon nanotubes (MWCNTs) and rf plasma-treated nanotubes decorated with gold nanoclusters are experimentally and theoretically investigated. Results from X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM) analysis are discussed. It is found that NO2 detection involves the interaction with oxygenated vacancies and/ or Au nanoclusters present on the nanotube walls, while CO detection is significantly enhanced by the interaction with Au nanoclusters anchored at the nanotube sidewalls. These differences in detection pathways open the possibility for fabricating selective MWCNT sensors.

AB - The detection mechanisms of gas sensors based on oxygen plasma functionalised multi wall carbon nanotubes (MWCNTs) and rf plasma-treated nanotubes decorated with gold nanoclusters are experimentally and theoretically investigated. Results from X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM) analysis are discussed. It is found that NO2 detection involves the interaction with oxygenated vacancies and/ or Au nanoclusters present on the nanotube walls, while CO detection is significantly enhanced by the interaction with Au nanoclusters anchored at the nanotube sidewalls. These differences in detection pathways open the possibility for fabricating selective MWCNT sensors.

KW - Carbon nanotubes

KW - gas sensors

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DO - 10.1016/j.proche.2009.07.232

M3 - Article

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EP - 934

JO - Procedia Chemistry

JF - Procedia Chemistry

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ER -

NO2 and CO interaction with plasma treated Au-decorated MWCNTs: Detection pathways

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Synthesis, Irradiation and Analysis of Materials (SIAM)

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NO2 and CO interaction with plasma treated Au-decorated MWCNTs: Detection pathways

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