High-resolution photoemission spectroscopy was used to study Rh decorated single-walled C nanotubes before and after the exposure to NO2. We found that the metal adatoms form ordered nanocrystallites exhibiting a surface termination close to the (111) oriented crystal. After NO2 uptake at 200 K, the thermal evolution of the NOx adspecies indicates for the Rh nanocrystallites a catalytic behavior similar to the low index Rh surfaces. The Rh 3d5/2 line shape discloses the bonding of Rh atoms to NO2 and its fragments, whereas the oxidation of the metal/nanotubes contact is monitored by the energy shift of the C 1s peak.

NO2 decomposition on Rh clusters supported on single-walled carbon nanotubes

R Larciprete;
2006

Abstract

High-resolution photoemission spectroscopy was used to study Rh decorated single-walled C nanotubes before and after the exposure to NO2. We found that the metal adatoms form ordered nanocrystallites exhibiting a surface termination close to the (111) oriented crystal. After NO2 uptake at 200 K, the thermal evolution of the NOx adspecies indicates for the Rh nanocrystallites a catalytic behavior similar to the low index Rh surfaces. The Rh 3d5/2 line shape discloses the bonding of Rh atoms to NO2 and its fragments, whereas the oxidation of the metal/nanotubes contact is monitored by the energy shift of the C 1s peak.
2006
Istituto dei Sistemi Complessi - ISC
Adsorption kinetics
Phase equilibria
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/30771
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