High Ethanol Gas Sensitivity of Nano γ-Fe₂O₃/ZnO Double-Layer Films Prepared by the Screen Printing Technology and the Hydrothermal Method

Abstract:

The gas sensor with high ethanol gas sensitivity made of nano γ-Fe₂O₃/ZnO double-layer films was fabricated by the screen printing technology and the hydrothermal process with addition of citric acid (CA) surfactant based on Zn(NO₃)₂·6H₂O and HMTA. XRD and SEM techniques were used to characterize the phases and morphologies of the films. The gas sensing properties of the gas sensor to ethanol were investigated. The result shows that the gas sensitivity of the nano γ-Fe₂O₃/ZnO double-layer films is higher than that of the nano γ-Fe₂O₃ single-layer film fabricated by the screen printing technology and the nano ZnO single-layer film fabricated by the hydrothermal process with addition of citric acid (CA) surfactant based on Zn(NO₃)₂·6H₂O and HMTA, respectively. The high ethanol gas sensitivity of the nano γ-Fe₂O₃/ZnO double-layer films was caused by the nano effect and the special energy band structure

• Periodical: Applied Mechanics and Materials (Volume 151)
• Pages: 350-354
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.151.350
• Online since: January 2012
• Authors: Kai Jin Huang, Shou Wei Ma, Fang Li Yuan
• Keywords: Ethanol, Gas Sensor, Mechanism, Nano γ-Fe₂O₃/ZnO Double-Layer Film, Sensitivity

References

[1] Z.H. Jing. Mater. Sci. Eng. B, Vol. 133(2006), pp.213-217.

[2] Z.H. Jing. Mater. Sci. Eng. A, Vol. 441(2006), pp.176-180.

[3] R.C. Biswal. Sens. Actuators B, Vol. 157(2011), pp.183-188.

[4] Z.H. Jing. Mater. Lett. Vol. 60(2006), pp.3315-3318.

[5] T. Kim, A. Sharp and B. Guo. Korean J. Chem. Eng., Vol. 27(2010), pp.1003-1009.

[6] G. Neri, A. Bonavita, S. Ipsale, G. Rizzo, C. Baratto, G. Faglia and G. Sberveglieri. Mater. Sci. Eng. B, Vol. 139(2007), pp.41-47.

DOI: 10.1016/j.mseb.2007.01.039

[7] Z.H. Jing and S.H. Wu. Mater. Lett. Vol. 60(2006), pp.952-956.

[8] Z.H. Jing, Y. Wang and S.H. Wu. Sens. Actuators B, Vol. 113(2006), pp.177-181.

[9] I.S. Lim, G.E. Jang, C.K. Kim and D.H. Yoon. Sens. Actuators B, Vol. 77(2001), pp.215-220.

[10] S.W. Tao, X.Q. Liu, X.F. Chu and Y.S. Shen. Sens. Actuators B, Vol. 61(1999), pp.33-38.

[11] J.H. Wang, M.S. Tong, X.Q. Wang, Y. Ma, D.L. Liu, J.K. Wu, D.S. Gao and G.T. Du. Sens. Actuators B, Vol. 84(2002), pp.95-97.

[12] L.J. Ma, T. Yan, S.L. Bai, X.W. Huang, Y.J. Song, A.F. Chen and C.C. Liu. Chin. J. Chem. Eng. Vol. 12(2004), pp.282-285.

[13] M.I. Ivanovskaya, D.A. Kotsikau, A. Taurino and P. Siciliano. Sens. Actuators B, Vol. 124(2007), pp.133-142.

[14] K.J. Huang, L. Yan and C.S. Xie. Appl. Mech. Mater. Vols. 29-32(2010), pp.602-606.

[15] M.I. Ivanovskaya, D.A. Kotsikau, G. Faglia, P. Nelli and S. Irkaew. Sens. Actuators B, Vol. 93(2003), pp.422-430.

[16] H.H. Wang and C.S. Xie. J. Cryst. Growth, Vol. 291(2006), pp.187-195.

[17] K.J. Huang, L. Yan and C.S. Xie. Adv. Mate. Research, Vol. (2011), pp.628-633.

[18] E. Rezlescu, C. Doroftei, N. Rezlescu and P.D. Popa. Phys. Status Solidi A, Vol. 205(2008), pp.1790-1793.

DOI: 10.1002/pssa.200723617

[19] N.F. Hamedani, A.R. Mahjoub, A.A. Khodadadi and Y. Mortazavi. Sens. Actuators B, Vol. 156 (2011), pp.737-742.

[20] A.K. Hamed, K.R. Mansoor and R.V. Mohammad. Appl. Surf. Sci. Vol. 257(2011), p.7988–7992.

[21] J. Zhang, X.H. Liu, L.W. Wang, T.L. Yang, X.Z. Guo, S.H. Wu, S.R. Wang and S.M. Zhang. Nanotech. Vol. 22(2011), p.185501.

[22] P. Feng, Q. Wan and T.H. Wang. Appl. Phys. Lett. Vol. 87(2005), p.213111.

[23] X.Y. Zhou, J.P. Li, M. Ma and Q.Z. Xue. Physica E, Vol. 43(2011), pp.1056-1060.

[24] Y. Xu and M.A.A. Schoonen. Am. Mineral. Vol. 85(2000), pp.543-556.