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SERS and infrared reflection‐absorption spectroscopy of NO on cold‐deposited Cu
Author(s) -
Lust M.,
Pucci A.,
Otto A.
Publication year - 2006
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1454
Subject(s) - raman spectroscopy , chemistry , dissociation (chemistry) , infrared spectroscopy , spectroscopy , infrared , desorption , analytical chemistry (journal) , absorption spectroscopy , photochemistry , absorption band , absorption (acoustics) , optics , adsorption , organic chemistry , physics , quantum mechanics
Surface enhanced Raman spectroscopy (SERS) of NO on cold‐deposited Cu yields only bands of the dissociation products of NO, but not the stretching bands of NO. In contrast, infrared reflection‐absorption spectroscopy (IRRAS) on similarly prepared samples displays strong NO stretching bands and only a very weak band of N 2 O from multilayer NO. The differences can be explained neither by thermal or photo‐desorption nor by photochemical effects in the laser focus. Whereas the SERS results may be explained by the action of special sites, it is still unclear why the IRRAS signal from the dissociation products of NO at the ‘catalytically active sites’ is below the noise level. Copyright © 2006 John Wiley & Sons, Ltd.