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

Résultats de recherche: Contribution à un journal/une revue › Article › Revue par des pairs

Résumé

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.

langue originale	Anglais
Pages (de - à)	931-934
Nombre de pages	4
journal	Procedia Chemistry
Volume	1
Numéro de publication	1
Les DOIs	https://doi.org/10.1016/j.proche.2009.07.232
Etat de la publication	Publié - 1 sept. 2009

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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",

month = sep,

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doi = "10.1016/j.proche.2009.07.232",

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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.

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KW - gas sensors

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

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