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NOx sensing characteristics of Ba2WO5 at an elevated temperatures

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Abstract

NOx sensing properties of Ba2WO5 were investigated in an effort to search for a new sensor material operative at high temperatures. Ba2WO5 was prepared from WO3 and BaCO3, and packed and sintered to fabricate disk-type sensor elements. Ba2WO5 exhibits neck-controlled conduction and provides highest sensitivity of 47 and 29 at 500 to 200 ppm NO and 80 ppm NO2, respectively. The samples sintered beyond 800 shows the gas sensitivity independent of the sintering temperature. This may be due to the fact that the open neck control is dominant for the specimens sintered at temperatures higher than 800°C. From the response transient to NO and NO2 and MO2(g)+e→NO2 andNO(g)+O(ads) +e→NO2 are proposed as possible reactions occurring on the surface of Ba2WO5 in the presence of NO and NO2 gases.

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References

  1. G. Sberveglieri, S. Groppelli, P. Nelli, V. Lantto and H. Torvela,Sensors and Actuators B 1, 79 (1990).

    Article  Google Scholar 

  2. K. Satake, A. Kobayashi, T. Inoue, T. Nakahara and T. Takeuchi, inThe Third International Meeting on Chemical Sensors, p. 334, Cleveland, USA (1990).

  3. G. Sberveglieri, G. Faglia, S. Groppelli and P. Nelli,Sensors and Actuators B 8, 79 (1992).

    Article  Google Scholar 

  4. D. Kohl,Sensors and Actuators B 18, 71 (1989).

    Article  CAS  Google Scholar 

  5. J. Tamaki, T. Fujii, K. Fujimori, N. Miura and N. Yamazoe,Sensors and Actuators B 24/25, 396 (1995).

    Article  Google Scholar 

  6. M. Akiyama, J. Tamaki, N. Miura and N. Yamazoe, Chem. Lett., l611 (1991).

  7. B. Bott and T.A. Jones,Sensors and Actuators B 5, 43 (1984).

    Article  CAS  Google Scholar 

  8. J. Tamaki, T. Fujii, K. Fujimori, N. Miura and N. Yamazoe, inThe Fifth International Meeting on Chemical Sensors, p. 498, Rome, Italy (1994).

  9. C. Xu, J. Tamaki, N. Miura and N. Yamazoe,Denki Kagaku 58, 1143 (1990).

    CAS  Google Scholar 

  10. C. Xu, J. Tamaki, N. Miura and N. Yamazoe,Sensors and Actuators B 3, 147 (1991).

    Article  Google Scholar 

  11. J. Tamaki, Z. Zhang, K. Fujimori, M. Akiyama, T. Harada, N. Miura and N. Yamazoe,J. Electrochem. Soc. 141, 2207 (1994).

    Article  CAS  Google Scholar 

  12. T. W. Capehart and S. C. Chang,J. Vac. Sci. Tech. 18, 393 (1981).

    Article  CAS  ADS  Google Scholar 

  13. F. J. Gutierrez, L. Ares, J. I. Robla, M. C. Horrillo, I. Sayago, J. M. Getino and J. A. de Agapito,Sensors and Actuators B 15/16, 354 (1993).

    Article  Google Scholar 

  14. G. Williams and G. S. V. Coles,Sensors and Actuators B 15/16, 349 (1993).

    Article  Google Scholar 

  15. G. Sberveglieri, S. Groppelli and P. Nelli,Sensors and Actuators B 4, 457 (1991).

    Article  Google Scholar 

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Authors and Affiliations

  1. LG Chemical Co., 104-1 Moonji-dong, Yusong-ku, 305-380, Taejon, Korea

    M. S. Kwak, J. H. Lee, J. S. Hwang & C. O. Park

  2. Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 373-1 Kusong-dong, Yusong-ku, 305-701, Taejon, Korea

    J. H. Lee & C. O. Park

  3. Department of Chemistry, Taejon University, 96-3 Yongun-dong, Dong-ku, 300-120, Taejon, Korea

    J. S. Hwang

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  1. M. S. Kwak
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  2. J. H. Lee
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  3. J. S. Hwang
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  4. C. O. Park
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Kwak, M.S., Lee, J.H., Hwang, J.S. et al. NOx sensing characteristics of Ba2WO5 at an elevated temperatures. Metals and Materials 5, 351–355 (1999). https://doi.org/10.1007/BF03187757

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