Carbon nanotubes randomly decorated with gold clusters: From nano hybrid atomic structures to gas sensing prototypes

J.-C. Charlier, L. Arnaud, I.V. Avilov, M. Delgado, F. Demoisson, E.H. Espinosa, C.P. Ewels, A. Felten, J. Guillot, R. Ionescu, R. Leghrib, E. Llobet, A. Mansour, H.-N. Migeon, J.-J. Pireaux, F. Reniers, I. Suarez-Martinez, G.E. Watson, Z. Zanolli

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

Carbon nanotube surfaces, activated and randomly decorated with metal nanoclusters, have been studied in uniquely combined theoretical and experimental approaches as prototypes for molecular recognition. The key concept is to shape metallic clusters that donate or accept a fractional charge upon adsorption of a target molecule, and modify the electron transport in the nanotube. The present work focuses on a simple system, carbon nanotubes with gold clusters. The nature of the gold-nanotube interaction is studied using first-principles techniques. The numerical simulations predict the binding and diffusion energies of gold atoms at the tube surface, including realistic atomic models for defects potentially present at the nanotube surface. The atomic structure of the gold nanoclusters and their effect on the intrinsic electronic quantum transport properties of the nanotube are also predicted. Experimentally, multi-wall CNTs are decorated with gold clusters using (1)vacuum evaporation, after activation with an RF oxygen plasma and (2)colloid solution injected into an RF atmospheric plasma; the hybrid systems are accurately characterized using XPS and TEM techniques. The response of gas sensors based on these nano hybrids is quantified for the detection of toxic species like NO, CO, CHOH and CH.
langue originaleAnglais
journalNanotechnology
Volume20
Numéro de publication37
Les DOIs
étatPublié - 16 sept. 2009

Empreinte digitale

Carbon Nanotubes
Gold
Carbon nanotubes
Gases
Nanotubes
Nanoclusters
Quantum electronics
Plasmas
Molecular recognition
Vacuum evaporation
Poisons
Colloids
Carbon Monoxide
Chemical sensors
Hybrid systems
Transport properties
X ray photoelectron spectroscopy
Metals
Chemical activation
Oxygen

Citer ceci

Charlier, J.-C. ; Arnaud, L. ; Avilov, I.V. ; Delgado, M. ; Demoisson, F. ; Espinosa, E.H. ; Ewels, C.P. ; Felten, A. ; Guillot, J. ; Ionescu, R. ; Leghrib, R. ; Llobet, E. ; Mansour, A. ; Migeon, H.-N. ; Pireaux, J.-J. ; Reniers, F. ; Suarez-Martinez, I. ; Watson, G.E. ; Zanolli, Z. / Carbon nanotubes randomly decorated with gold clusters : From nano hybrid atomic structures to gas sensing prototypes. Dans: Nanotechnology. 2009 ; Vol 20, Numéro 37.
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abstract = "Carbon nanotube surfaces, activated and randomly decorated with metal nanoclusters, have been studied in uniquely combined theoretical and experimental approaches as prototypes for molecular recognition. The key concept is to shape metallic clusters that donate or accept a fractional charge upon adsorption of a target molecule, and modify the electron transport in the nanotube. The present work focuses on a simple system, carbon nanotubes with gold clusters. The nature of the gold-nanotube interaction is studied using first-principles techniques. The numerical simulations predict the binding and diffusion energies of gold atoms at the tube surface, including realistic atomic models for defects potentially present at the nanotube surface. The atomic structure of the gold nanoclusters and their effect on the intrinsic electronic quantum transport properties of the nanotube are also predicted. Experimentally, multi-wall CNTs are decorated with gold clusters using (1)vacuum evaporation, after activation with an RF oxygen plasma and (2)colloid solution injected into an RF atmospheric plasma; the hybrid systems are accurately characterized using XPS and TEM techniques. The response of gas sensors based on these nano hybrids is quantified for the detection of toxic species like NO, CO, CHOH and CH.",
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Charlier, J-C, Arnaud, L, Avilov, IV, Delgado, M, Demoisson, F, Espinosa, EH, Ewels, CP, Felten, A, Guillot, J, Ionescu, R, Leghrib, R, Llobet, E, Mansour, A, Migeon, H-N, Pireaux, J-J, Reniers, F, Suarez-Martinez, I, Watson, GE & Zanolli, Z 2009, 'Carbon nanotubes randomly decorated with gold clusters: From nano hybrid atomic structures to gas sensing prototypes' Nanotechnology, VOL. 20, Numéro 37. https://doi.org/10.1088/0957-4484/20/37/375501

Carbon nanotubes randomly decorated with gold clusters : From nano hybrid atomic structures to gas sensing prototypes. / Charlier, J.-C.; Arnaud, L.; Avilov, I.V.; Delgado, M.; Demoisson, F.; Espinosa, E.H.; Ewels, C.P.; Felten, A.; Guillot, J.; Ionescu, R.; Leghrib, R.; Llobet, E.; Mansour, A.; Migeon, H.-N.; Pireaux, J.-J.; Reniers, F.; Suarez-Martinez, I.; Watson, G.E.; Zanolli, Z.

Dans: Nanotechnology, Vol 20, Numéro 37, 16.09.2009.

Résultats de recherche: Contribution à un journal/une revueArticle

TY - JOUR

T1 - Carbon nanotubes randomly decorated with gold clusters

T2 - From nano hybrid atomic structures to gas sensing prototypes

AU - Charlier, J.-C.

AU - Arnaud, L.

AU - Avilov, I.V.

AU - Delgado, M.

AU - Demoisson, F.

AU - Espinosa, E.H.

AU - Ewels, C.P.

AU - Felten, A.

AU - Guillot, J.

AU - Ionescu, R.

AU - Leghrib, R.

AU - Llobet, E.

AU - Mansour, A.

AU - Migeon, H.-N.

AU - Pireaux, J.-J.

AU - Reniers, F.

AU - Suarez-Martinez, I.

AU - Watson, G.E.

AU - Zanolli, Z.

PY - 2009/9/16

Y1 - 2009/9/16

N2 - Carbon nanotube surfaces, activated and randomly decorated with metal nanoclusters, have been studied in uniquely combined theoretical and experimental approaches as prototypes for molecular recognition. The key concept is to shape metallic clusters that donate or accept a fractional charge upon adsorption of a target molecule, and modify the electron transport in the nanotube. The present work focuses on a simple system, carbon nanotubes with gold clusters. The nature of the gold-nanotube interaction is studied using first-principles techniques. The numerical simulations predict the binding and diffusion energies of gold atoms at the tube surface, including realistic atomic models for defects potentially present at the nanotube surface. The atomic structure of the gold nanoclusters and their effect on the intrinsic electronic quantum transport properties of the nanotube are also predicted. Experimentally, multi-wall CNTs are decorated with gold clusters using (1)vacuum evaporation, after activation with an RF oxygen plasma and (2)colloid solution injected into an RF atmospheric plasma; the hybrid systems are accurately characterized using XPS and TEM techniques. The response of gas sensors based on these nano hybrids is quantified for the detection of toxic species like NO, CO, CHOH and CH.

AB - Carbon nanotube surfaces, activated and randomly decorated with metal nanoclusters, have been studied in uniquely combined theoretical and experimental approaches as prototypes for molecular recognition. The key concept is to shape metallic clusters that donate or accept a fractional charge upon adsorption of a target molecule, and modify the electron transport in the nanotube. The present work focuses on a simple system, carbon nanotubes with gold clusters. The nature of the gold-nanotube interaction is studied using first-principles techniques. The numerical simulations predict the binding and diffusion energies of gold atoms at the tube surface, including realistic atomic models for defects potentially present at the nanotube surface. The atomic structure of the gold nanoclusters and their effect on the intrinsic electronic quantum transport properties of the nanotube are also predicted. Experimentally, multi-wall CNTs are decorated with gold clusters using (1)vacuum evaporation, after activation with an RF oxygen plasma and (2)colloid solution injected into an RF atmospheric plasma; the hybrid systems are accurately characterized using XPS and TEM techniques. The response of gas sensors based on these nano hybrids is quantified for the detection of toxic species like NO, CO, CHOH and CH.

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U2 - 10.1088/0957-4484/20/37/375501

DO - 10.1088/0957-4484/20/37/375501

M3 - Article

VL - 20

JO - Nanotechnology

JF - Nanotechnology

SN - 0957-4484

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