Skip to main content
Article
Licensed
Unlicensed Requires Authentication

Structural Investigations on Nanocomposite Mixed Metal Oxide Powders Used in Surface Catalysis

  • , and
Published/Copyright: September 25, 2009
Zeitschrift für Physikalische Chemie
From the journal Zeitschrift für Physikalische Chemie Volume 222 Issue 7

Abstract

Structural investigations were performed on catalytically active WO3/CeO2 and CeO2/yttria stabilised zirconia (YSZ) nanocomposite mixed metal oxide powders, by means of extended X-ray absorption fine structure (EXAFS) and Raman spectroscopy. In the case of WO3/CeO2 nanocomposites, WO3 in varying compositions, were supported on CeO2 and in the CeO2/YSZ nanocomposites, CeO2 in different compositions, were supported on YSZ. Wet impregnation technique was used for the preparation of samples in both the cases. The EXAFS and Raman investigations on WO3/CeO2 nanocomposites show that the structure of the different WO3/CeO2 nanocomposites is similar to that of crystalline CeO2 and WO3 doping does not modify the local environment around the cerium atoms. The studies on CeO2/YSZ nanocomposites reveal that the YSZ retains its structural integrity even after doping with CeO2. Hence the studies on the ceria containing two different nanocomposite mixed metal oxide powders indicate that there is no diffusion of the doped oxides into the metal oxide support. Therefore, it is confirmed that the dopant is only on the surface of the support material.

Keywords: Nanocomposites; Catalysis; EXAFS; Raman Spectroscopy
* Correspondence address: University of Pennsylvania, Department of Chemistry, 231 South 34th Street, PhiladelphiaPA19104, U.S.A.,
Published Online: 2009-9-25
Published in Print: 2008-7-1

© by Oldenbourg Wissenschaftsverlag, München, Germany

Articles in the same Issue

  1. Fluorescence Quenching of Meso-Tetrakis(p-Sulfonatophenyl)Porphyrin (TSPP) by certain Organic Dyes
  2. Nonlinear Dynamics in the Uncatalyzed Bromate–Pyrocatechol Reaction
  3. A Study on the Fluorescence Quenching of Eosin by certain Organic Dyes
  4. Structural Investigations on Nanocomposite Mixed Metal Oxide Powders Used in Surface Catalysis
  5. Solvation Behaviour of some Copper (I), Silver (I) and Tetraalkylammonium Salts in Actonitrile + Adiponitrile Mixtures
  6. Mechanisms of Dipolar Ortho/Para-H2O Conversion in Ice
  7. Thermodynamic and Transport Behavior of Binary Liquid Mixtures of 1-Decanol with Hexadecane and Squalane at 298.15, 303.15 and 308.15 K
  8. Experimental and Quantum Chemical Study of the Oxidation Mechanism of CF2CFBr by O2
https://doi.org/10.1524/zpch.2008.5325
Keywords for this article
Nanocomposites; Catalysis; EXAFS; Raman Spectroscopy

Articles in the same Issue

  1. Fluorescence Quenching of Meso-Tetrakis(p-Sulfonatophenyl)Porphyrin (TSPP) by certain Organic Dyes
  2. Nonlinear Dynamics in the Uncatalyzed Bromate–Pyrocatechol Reaction
  3. A Study on the Fluorescence Quenching of Eosin by certain Organic Dyes
  4. Structural Investigations on Nanocomposite Mixed Metal Oxide Powders Used in Surface Catalysis
  5. Solvation Behaviour of some Copper (I), Silver (I) and Tetraalkylammonium Salts in Actonitrile + Adiponitrile Mixtures
  6. Mechanisms of Dipolar Ortho/Para-H2O Conversion in Ice
  7. Thermodynamic and Transport Behavior of Binary Liquid Mixtures of 1-Decanol with Hexadecane and Squalane at 298.15, 303.15 and 308.15 K
  8. Experimental and Quantum Chemical Study of the Oxidation Mechanism of CF2CFBr by O2
Downloaded on 17.4.2026 from https://www.degruyterbrill.com/document/doi/10.1524/zpch.2008.5325/html
Scroll to top button