Premium
Frontispiece: Thermally Stable TiO 2 ‐ and SiO 2 ‐Shell‐Isolated Au Nanoparticles for In Situ Plasmon‐Enhanced Raman Spectroscopy of Hydrogenation Catalysts
Author(s) -
Hartman Thomas,
Weckhuysen Bert M.
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201881565
Subject(s) - raman spectroscopy , raman scattering , nanoparticle , materials science , catalysis , spectroscopy , plasmon , nanometre , adsorption , in situ , shell (structure) , nanotechnology , chemical engineering , analytical chemistry (journal) , chemistry , optoelectronics , optics , composite material , physics , organic chemistry , engineering , quantum mechanics , biochemistry , chromatography
Shell‐isolated metal nanoparticles consisting of Au cores with nanometers‐thin TiO 2 and SiO 2 coatings are used to enhance the Raman scattering of adsorbates. The Au cores enhance the Raman scattering by a factor of 10 5 , making Raman spectroscopy effectively a surface sensitive technique. In this work, we develop the required materials as well as the related measurement protocols for performing shell‐isolated nanoparticle‐enhanced Raman spectroscopy (SHINERS) and demonstrate its implementation during catalytic CO hydrogenation reactions over Ru‐based catalysts. Using these materials, the adsorption of CO can be detected and followed over time under various reaction conditions. For more information, see the Full Paper by B. M. Weckhuysen and T. Hartman on page 3733 ff.