Skip to main content
Article thumbnail
Location of Repository

Electronic spectroscopies

By B.M. Weckhuysen and R.A. Schoonheydt

Abstract

Diffuse reflectance spectroscopy (DRS) in the ultraviolet, visible and near-infrared\ud region is a versatile spectroscopic technique, as both d-d and charge transfer\ud transitions of supported TMI can be probed. One of the advantages of electronic\ud spectroscopy is that the obtained information is directly chemical since the outer shell\ud electrons of the TMI are probed and provide information about the oxidation state and\ud coordination environment of TMI on surfaces. Furthermore, the DRS technique can be\ud used under in situ conditions and is quantitative under well-defined conditions. The\ud main disadvantage is that diffuse reflectance spectra are complex, and usually\ud encompasses several broad and overlapping bands. To avoid biased spectral analysis,\ud chemometrical techniques need to be employed.\ud The chapter starts with a short overview of the principles of DRS spectroscopy.\ud In the first two sections, theoretical and practical aspects of DRS, together with an\ud introduction to crystal field, ligand field and molecular orbital theory are given. The\ud third section will focus on selected examples in order to illustrate the potential and\ud limitations of DRS spectroscopy for unravelling the chemistry of TMI on surfaces

Topics: Scheikunde
Year: 2000
OAI identifier: oai:dspace.library.uu.nl:1874/23472
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://dspace.library.uu.nl:80... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.