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Nonagglomerated, submicron α–Fe2O3 particles: Preparation and application

Published online by Cambridge University Press:  31 January 2011

H-O. Jungk  and
C. Feldmann
H-O. Jungk
Affiliation:
Philips Research Laboratories, Weisshausstr. 2, D-52066 Aachen, Germany
C. Feldmann
Affiliation:
Philips Research Laboratories, Weisshausstr. 2, D-52066 Aachen, Germany
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Abstract

Spherical particles of α–Fe2O3 80 to 100 nm in size were prepared with the polyol method. Scanning electron microscopy, x-ray powder diffraction, and measurements of the diffuse reflection were used to characterize the powder material. The characteristic red color of hematite was adjusted after brief heating (250 °C, 15 min) which did not lead to further particle growth. The polyol method turned out to be suited for the preparation of quite concentrated (up to 20 wt%) and very stable suspensions of submicron Fe2O3 particles. Based on such suspensions, the red emitting phosphor Y2O2S:Eu was coated as a model substrate. As a result, very homogeneous coatings of α-Fe2O3 on the phosphor material were realized. Individual iron oxide particles on the phosphor surface confirm the presence of nonagglomerated Fe2O3 particles in the polyol medium.

Type
Articles
Information
Journal of Materials Research , Volume 15 , Issue 10 , October 2000 , pp. 2244 - 2248
Copyright
Copyright © Materials Research Society 2000

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References

REFERENCES

1. Cornell, R.M. and Schwertmann, U., The Iron Oxides, 1st ed. (VCH, Weinheim, Germany, 1996), p. 463.Google Scholar
2. Bittler, K. and Ostertag, W., Angew. Chem. Int. Ed. Engl. 19, 190 (1980).CrossRefGoogle Scholar
3. Buxbaum, G., Industrial Inorganic Pigments, 1st ed. (VCH, Weinheim, Germany, 1993), 1st ed., p. 85.Google Scholar
4. Rane, K.S., Verenkar, V.M.S, Pednekar, R.M., and Sawant, P.Y., J. Mater. Sci. Mater. Electron. 10, 121 (1999).CrossRefGoogle Scholar
5. Gadalla, A.M. and Yu, H.F., J. Mater. Res. 5, 1233 (1990).CrossRefGoogle Scholar
6. Gonzalez-Carreno, T., Morales, M.P., Gracia, M., and Serna, C.T., Mater. Lett. 18, 151 (1993).CrossRefGoogle Scholar
7. Dong, D., Hong, P., and Dai, S., Mater. Res. Bull. 30, 537 (1995).Google Scholar
8. Liu, Y., Zhu, W., Tan, O.K., and Shen, Y., Mater. Sci. Eng. B 47, 171 (1997).CrossRefGoogle Scholar
9. Hamada, S. and Matijevic, E., J. Chem. Soc. Faraday Trans. 78, 2147 (1982).CrossRefGoogle Scholar
10. Hamada, S., Niizrki, S., and Kudo, Y., Bull. Chem. Soc. Jpn. 59, 3443 (1986).CrossRefGoogle Scholar
11. Sugimoto, T., Sakata, K., and Muramatsu, M., J. Colloid Interface Sci. 159, 372 (1993).CrossRefGoogle Scholar
12. Domingo, C., Rodriguez-Clemente, R., and Blesa, M., J. Colloid Interface Sci. 165, 244 (1994).CrossRefGoogle Scholar
13. van Ewijk, G.A., Vroege, G.J., and Philipse, A.P., J. Magn. Magn. Mater. 201, 31 (1999).CrossRefGoogle Scholar
14. Bandow, S., Kimura, K., Konno, K., and Kitahara, A., Jpn. J. Appl. Phys. 26, 713 (1989).CrossRefGoogle Scholar
15. Chhabra, V., Ayyub, P., Chattopadhyay, S., and Maitra, A. N., Mater. Lett. 26, 21 (1996).CrossRefGoogle Scholar
16. Li, Y., Liao, H., and Qian, Y., Mater. Res. Bull. 33, 841 (1998).CrossRefGoogle Scholar
17. Qian, Y., Xie, Y., He, C., Li, J., and Chen, Z., Mater. Res. Bull. 29, 953 (1994).CrossRefGoogle Scholar
18. Sahu, K.K., Rath, C., Mishra, N.C., Anadn, S., and Das, R.P., J. Colloid Interface Sci. 185, 402 (1997).CrossRefGoogle Scholar
19. Sugimoto, T. and Sakada, K., J. Colloid Interface Sci. 152, 587 (1992).CrossRefGoogle Scholar
20. Toneguzzo, P., Viau, G., Acher, O., Fievet-Vincent, F., and Fievet, F., Adv. Mater. 10, 1032 (1998).3.0.CO;2-M>CrossRefGoogle Scholar
21. Jezequel, D., Guenot, J., Jouini, N., and Fievet, F., J. Mater. Res. 10, 77 (1995).CrossRefGoogle Scholar
22. Merikhi, J., Jungk, H-O., and Feldmann, C., J. Mater. Chem. 10, 1311 (2000).CrossRefGoogle Scholar
23. Ronda, C.R. and Bredol, M., J. Colloid Interface Sci. 173, 328 (1995).CrossRefGoogle Scholar
24. Merikhi, J. and Feldmann, C., J. Mater. Sci. 35, 3955 (2000).CrossRefGoogle Scholar
25. Carl, K., Dikhoff, J.A.M, Eckenbach, W., and Junginger, H.G., J. Electrochem. Soc. 128, 2395 (1981).CrossRefGoogle Scholar
26. Ozawa, L., Cathodoluminescence, 1st ed. (VCH, Weinheim, Germany, 1990), p. 103.Google Scholar
27. Shionoya, S. and Yen, W.M., Phosphor Handbook, 2nd ed. (CRC Press, Boca Raton, FL, 1998), p. 474.Google Scholar
28. Greenwood, N.N. and Earnshaw, A., Chemistry of the Elements, 1st ed. (Pergamon Press, Oxford, United Kingdom, 1994) p. 1254.Google Scholar
29. Jungk, H-O. and Feldmann, C., Mater, J.. Sci. (in print).Google Scholar