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In situ diagnostics of catalytic materials using tunable confocal Raman spectroscopy
Author(s) -
Nitsche David,
Hess Christian
Publication year - 2013
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.4383
Subject(s) - raman spectroscopy , ultraviolet , confocal , laser , materials science , raman microscope , characterization (materials science) , microscope , infrared , in situ , excitation , catalysis , excitation wavelength , analytical chemistry (journal) , raman scattering , optics , optoelectronics , nanotechnology , chemistry , wavelength , biochemistry , physics , electrical engineering , organic chemistry , chromatography , engineering
A new Raman spectroscopic setup for in situ characterization of catalytic materials based on a tunable laser system and a confocal Raman microscope is described. The laser excitation wavelength is variable over a broad range from deep ultraviolet (UV) to near‐infrared allowing for targeted use of Raman diagnostics for catalyst characterization. By utilization of resonance effects, the sensitivity of the method can be strongly increased. The potential of the setup is illustrated by new in situ Raman results on dispersed vanadium oxide catalysts obtained at 217.5 and 280 nm UV laser excitation. Copyright © 2013 John Wiley & Sons, Ltd.