Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-11-24T17:44:50.944Z Has data issue: false hasContentIssue false
  • English
  • Français

Structure Specificity of Nanocrystalline Praseodymia Doped Ceria

Published online by Cambridge University Press:  01 February 2011

Vladislav A. Sadykov ,
V.I. Voronin ,
A. N. Petrov ,
Yu. V. Frolova ,
V.V. Kriventsov ,
D.I. Kochubei ,
V. I. Zaikovskii ,
H. Borchert  and
S. Neophytides
Vladislav A. Sadykov
Affiliation:
Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia
V.I. Voronin
Affiliation:
Institute of Metals Physics, Ural Branch of RAS, Ekaterinburg, Russia.
A. N. Petrov
Affiliation:
Chemical Department of Ural State University, Ekaterinburg, Russia
Yu. V. Frolova
Affiliation:
Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia
V.V. Kriventsov
Affiliation:
Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia
D.I. Kochubei
Affiliation:
Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia
V. I. Zaikovskii
Affiliation:
Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia
H. Borchert
Affiliation:
Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia
S. Neophytides
Affiliation:
Institute of Chemical Engineering & High Temperature Processes, Patras, Greece.
Get access

Abstract

The features of the structure of nanorystalline Ce1-xPrxO2-y system (0 ≤ × ≤ 0.5) prepared via a complex polymerized precursor (Pechini) route have been elucidated by using a combination of spectroscopic (XANES, XPS) and structural (TEM, neutron diffraction) methods. Within the studied range of composition, the structure of all samples air annealed at 500 °C corresponds to single-phase fluorite-like solid solution. The relative content of Pr3+ both in the bulk and in the surface layer appears to be as high as 20–50%. The Rietveld refinement revealed non-monotonous variation of structural parameters (lattice parameter, domain size, microstrain density, Ce-O and O-O distances) and residual lattice hydroxyls concentration with Pr content. Clustering of defects along with variation of the mean Pr cation radius/charge state and disordering of the surface layer/ domain boundaries appear to be responsible for the observed features.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 848: Symposium FF – Solid-State Chemistry of Inorganic Materials V , 2004 , FF5.2.1/K5.2
Copyright
Copyright © Materials Research Society 2005

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Knauth, P., Tuller, H.L., Mat. Res. Soc. Symp. Proc. 548 (1999) 429 Google Scholar
2. Bouchet, R., Knauth, P., Stefanik, T., Tuller, H.L., in Solid State Ionics 2002, Mat. Res. Soc. Symp. Proc. 756, 169 (2003).Google Scholar
3. Hwang, J.-H., and Mason, T.O., Z. Phys. Chem. 207, 21 (1998)Google Scholar
4. Kuznetsova, G., Sadykov, V. A., Moroz, E. M., Trukhan, S. N., Paukshtis, E. A., Kolomiichuk, V. N., Burgina, E. B., Zaikovskii, V. I., Fedotov, M. A., Lunin, V. V., Kemnitz, E., Stud. Surf. Sci. Catal. 143, 659 (2002).Google Scholar
5. Goshchitskii, B. N. and Menshikov, A. Z., Neutron News 7, 12 (1996)Google Scholar
6. Rietveld, H. M., J. Appl. Crystallogr. 2, 65 (1969)Google Scholar
7. Rodriges-Carvajal, J., Physica B 192, 155 (1993).Google Scholar
8. Sinev, M.Yu., Graham, G. W., Haack, L. P., Shelef, M., J. Mater. Res. 11, 1960 (1996)‥Google Scholar
9. Borchert, H., Frolova, Yu., Kaichev, V., Prosvirin, I., Alikina, G., Lukashevich, A., Zaikovskii, V., Moroz, E., Trukhan, S., Ivanov, V., Paukshtis, E., Bukhtiyarov, V., Sadykov, V., J. Phys. Chem. B (2005), in press.Google Scholar
10. Kaindl, G., Schmiester, G., Sampathkumaran, E.V., Phys. Rev. B 38, 10174 (1988)Google Scholar
11. Zhang, F., Wang, P., Koberstein, J., Khalid, S., Chan, S.-W., Surf. Sci. 563, 74 (2004).Google Scholar
12. Sekhar, B.R., Hervieu, M., and Studer, F., J. Phys. Condens. Matter 9, 2485 (1997).Google Scholar
13. Lytle, F.W., van der Laan, G., Greegor, R.B., Larson, E.M., Violet, C.E., and Wong, J., Phys. Rev. B, 41, 8955 (1990).Google Scholar
14. Nauer, M., Ftikos, Ch., Steele, B.C.H., J. Eur. Ceram. Soc. 14, 493 (1994).Google Scholar
15. Shuk, P., Greenblatt, M., Solid State Ionics 116, 217 (1999).Google Scholar
16. Sovestnov, A.E., Shaburov, V.A., Melekh, B.T., Smirnov, I.A., Smirnov, Yu. P., Egorov, A.V., Phys. Solid State 36, 620 (1994).Google Scholar
17. Perebeinos, V., Chan, S.-W., Zhang, F., Solid State Commun. 123, 295 (2002)Google Scholar
18. Hong, S.J., Virkar, A.V., J. Am. Ceram. Soc. 78, 433 (1995)Google Scholar
19. Yashima, M., Ishizawa, N., and Yoshimura, M., J. Am. Ceram. Soc. 75, 1541 (1992).Google Scholar
20.. Shannon, R.D., Acta Crystallogr. Sec. A 32, 751 (1976)Google Scholar