Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-11-08T03:24:05.207Z Has data issue: false hasContentIssue false
  • English
  • Français

Phase evolution, microstructure, and gas-sensing characteristics of the Sb2O3–Fe2O3 system prepared by coprecipitation

Published online by Cambridge University Press:  31 January 2011

Tianshu Zhang ,
P. Hing ,
Ruifang Zhang ,
Jiancheng Zhang  and
Young Li
Tianshu Zhang
Affiliation:
School of Applied Science, Division of Materials Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798
P. Hing
Affiliation:
School of Applied Science, Division of Materials Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798
Ruifang Zhang
Affiliation:
School of Applied Science, Division of Materials Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798
Jiancheng Zhang
Affiliation:
Department of Inorganic Materials, Shanghai University, 201800, Shanghai, People's Republic of China
Young Li
Affiliation:
Structure Research Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, China
Get access

Abstract

Precursor powders with antimony-to-iron (Sb/Fe) atomic ratios ranging from 0 to 2.0 were prepared by chemical coprecipitation. The origin of enhanced gas-sensing behavior at a higher calcining temperature was investigated, based on phase evolution and microstructure characterized by means of thermal analysis, x-ray diffraction, Brunauer–Emmett–Teller surface area measurement, and electron microscopy. Only one iron–antimony oxide (i.e., FeSbO4) could be obtained under present experimental conditions. Pure FeSbO4 exhibited a high gas sensitivity, only when calcining temperature was below 600 °C. A rapid crystallite growth, as well as hard agglomeration, occurred in pure FeSbO4 powder calcined at 600–1000 °C, and thus led to poor gas-sensing behavior. However, there existed an optimal Sb/Fe ratio range (i.e., 0.25 to 0.65) in which crystallite growth of both α–Fe2O3 and FeSbO4 could be efficiently depressed up to 800 °C. The samples (with Sb/Fe ratio in the range 0.25–0.65) calcined at 600–800 °C displayed a high sensitivity to liquid petroleum gas due to their large specific surface area and poor crystallinity.

Type
Articles
Information
Journal of Materials Research , Volume 15 , Issue 11 , November 2000 , pp. 2356 - 2363
Copyright
Copyright © Materials Research Society 2000

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.DeBore, F.E. and Selwood, P.W., J. Am. Chem. Soc. 76, 3365 (1954).CrossRefGoogle Scholar
2.Babdo, Y., Kiyama, M., Takada, T., and Kachi, S., Jpn. J. Appl. Phys. 4, 240 (1965).Google Scholar
3.Bondioli, F., Ferrari, A.M., Leonelli, C., and Manfredini, T., Mater. Res. Bull. 33, 723 (1998).CrossRefGoogle Scholar
4.Ewiss, M.A.Z, Phys. Chem. Glasses 39, 236 (1998).Google Scholar
5.Matsuoka, M., Nakatani, Y., and Ohido, H., Nat. Tech. Report 24, 461 (1978).Google Scholar
6.Chung, W. and Lee, D., Thin Solid Films 200, 329 (1991).CrossRefGoogle Scholar
7.Nakatani, Y. and Matsuoka, M., Jpn. J. Appl. Phys. 22, 233 (1983).CrossRefGoogle Scholar
8.Cantalini, C., Faccio, M., Ferri, G., and Pelino, M., Sens. Actuators B 18/19, 437 (1994).CrossRefGoogle Scholar
9.Nakatani, Y., Saka, M., and Matsuoka, M., Jpn. J. Appl. Phys. 22, 912 (1983).Google Scholar
10.Nakatani, Y. and Matsuoka, M., Jpn. J. Appl. Phys. 21, L758 (1982).CrossRefGoogle Scholar
11.Kim, T.H. and Yoon, K.H., J. Appl. Phys. 70, 2739 (1991).CrossRefGoogle Scholar
12.Kim, K.H., Lee, S.W., Shin, D.W., and Park, C.G., J. Am. Ceram. Soc. 77, 915 (1994).CrossRefGoogle Scholar
13.Ippommatsu, M. and Sasaki, H., J. Electrochem. Soc. 136, 2123 (1989).Google Scholar
14.Fang, Y.K. and Lee, J.J., Thin Solid Films 169, 51 (1989).CrossRefGoogle Scholar
15.Berry, F.J., Sarson, M.I., Labarta, A., Obradors, X., Rodrigllez, R., and Tejada, J., J. Solid State Chem. 71, 582 (1987).Google Scholar
16.Aso, I., Furukawa, S., Yamazone, N., and Seiyama, T., J. Catal. 64, 29 (1980).Google Scholar
17.Zhang, T. and Hing, P., J. Mater. Sci.: Mater. Electron. 10, 509 (1999).Google Scholar
18.Sarala, G., Manorama, S., and Rao, V.J., Sens. Actuators B 28, 31 (1995).CrossRefGoogle Scholar
19.Zhang, T., Hing, P., and Zhang, R., J. Mater. Sci. 35, 1419 (2000).Google Scholar
20.Walczak, J., Filipek, E., and Bosacka, M., Solid State Ionics, 101–103, 1363 (1997).CrossRefGoogle Scholar
21.Colombo, P., Guglielmi, M., and Enzo, S., J. Eur. Ceram. Soc. 8, 383 (1991).CrossRefGoogle Scholar
22.Schierbaum, K.D., Weimar, V., and Gopel, W., Sens. Actuators B 2, 205 (1991).Google Scholar
23.Kohl, D., Sens. Actuators 18, 71 (1989).Google Scholar
24.Badawy, W.A. and El-Taher, E.A., Thin Solid Films 158, 277 (1988).CrossRefGoogle Scholar