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Structural evolution of WO3 nanoclusters on ZrO2

Published online by Cambridge University Press:  01 April 2006

C. Angeles-Chavez ,
M.A. Cortes-Jácome ,
E. Torres-Garcia  and
J.A. Toledo-Antonio
C. Angeles-Chavez
Affiliation:
Instituto Mexicano del Petróleo. Prog. Ingeniería Molecular, 07730 México D. F, México
M.A. Cortes-Jácome
Affiliation:
Instituto Mexicano del Petróleo. Prog. Ingeniería Molecular, 07730 México D. F, México
E. Torres-Garcia
Affiliation:
Instituto Mexicano del Petróleo. Prog. Ingeniería Molecular, 07730 México D. F, México
J.A. Toledo-Antonio*
Affiliation:
Instituto Mexicano del Petróleo. Prog. Ingeniería Molecular, 07730 México D. F, México
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

Direct evidence of the transformation of WOx species in WO3 nanoclusters on WOx–ZrO2 system was achieved by high-resolution transmission electron microscopy (HRTEM) and Raman spectroscopy on samples obtained by a conventional precipitation method and annealed from 560 to 800 °C. WO3 Nanoclusters with 2-nm crystal size orthorhombic structure were identified on the ZrO2 surface after annealing at 800 °C.

Keywords

NanostructureRaman spectroscopyTransmission electron microscopy (TEM)
Type
Rapid Communications
Information
Journal of Materials Research , Volume 21 , Issue 4 , April 2006 , pp. 807 - 810
Copyright
Copyright © Materials Research Society 2006

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References

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