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research article

Surface-induced vibrational energy redistribution in methane/surface scattering depends on catalytic activity

Floss, Patrick  
•
Reilly, Christopher Scott  
•
Auerbach, Daniel J.
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2023
Frontiers in Chemistry

Recent state-to-state experiments of methane scattering from Ni(111) and graphene-covered Ni(111) combined with quantum mechanical simulations suggest an intriguing correlation between the surface-induced vibrational energy redistribution (SIVR) during the molecule/surface scattering event and the catalytic activity for methane dissociation of the target surface (Werdecker, Phys. Rev. Res., 2020, 2, 043251). Herein, we report new quantum state and angle- resolved measurements for methane scattering from Ni(111) and Au(111) probing the extent of ]3 → ]1 antisymmetric-to-symmetric conversion of methane stretching motion for two surfaces with different catalytic activities. Consistent with the expectations, the extent of SIVR occurring on the more catalytically active Ni(111) surface, as measured by the ]1: ]3 scattered population ratio, is found to be several times stronger than that on the more inert Au(111) surface. We also present additional insights on the rovibrational scattering dynamics contained in the angle- and state-resolved data. The results together highlight the power of state-resolved scattering measurements as a tool for investigating methane–surface interactions.

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Type
research article
DOI
10.3389/fchem.2023.1238711
Author(s)
Floss, Patrick  
Reilly, Christopher Scott  
Auerbach, Daniel J.
Beck, Rainer D.  
Date Issued

2023

Published in
Frontiers in Chemistry
Volume

11

Subjects

methane dissociation

•

state-to-state scattering

•

angular distributions

•

surface-induced vibrational energy redistribution

•

optothermal spectroscopy

•

bolometer infrared laser tagging,

•

heterogeneous catalysis

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
SCI-SB-RB  
Available on Infoscience
July 25, 2023
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/199362
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