Epitaxial cerium tungstate thin films

Metal oxide catalysts are widely used in industrial processes particularly in energy and environmental applications. The materials are rather complex, but a very versatile oxide is Cerium oxide is often able under reaction conditions to gain or lose oxygen, acting as an oxygen storage material.

Skála et al.,  Phys. Chem. Chem. Phys. 13 (2011) 7083-7089 .

 

Metal oxide catalysts are widely used in industrial processes particularly in energy and environmental applications. The materials are rather complex, but a very versatile oxide is cerium oxide, because under reaction conditions it is often able to gain or lose oxygen, acting as an oxygen storage material:

2 CeO2 ↔ Ce2O3+ 1/2 O2

Metal oxides can be mixed to optimise and improve properties, and in this work, the interaction between tungsten and cerium oxides, to form cerium tungstate, was studied. The Materials Science beamline is well suited to investigating such materials by photoemission spectroscopy, and an example is shown below.

The photon energies available provide plenty of intensity for observation of the W 4f core level, and performing resonant photoemission on cerium oxide.

Retrieve article
In situ growth of epitaxial cerium tungstate (100) thin films; T. Skála, N. Tsud, M. A. N. Orti, T. O. Mentes, A. Locatelli, K. C. Prince and V. Matolín; Phys. Chem. Chem. Phys. 13 (2011) 7083-7089. 10.1039/C0CP03012K
Last Updated on Sunday, 24 April 2016 19:50