Skip to main content Accessibility help
×
Home

Enhanced response characteristics of SnO2-ZnO hetrostructures loaded with nanoscale catalyst clusters for methane gas detection

  • Divya Haridas (a1) and Vinay Gupta (a2)

Abstract

Methane is an important explosive gas, used extensively at the domestic and industrial sites. It is the main constituent of natural gas, which is the main fuel supplied to homes and industries including automobiles. Detection of trace level of methane gas is very important to avoid any accidental explosion due to its leakage and may cause loss of valuable human life and property. The present paper is focused on the development of new sensing material in the form of composites to improve sensitivity, selectivity and stability. Present work shows the enhanced response of SnO2-ZnO composite structures for methane sensing and further increases its sensing response by loading appropriate catalyst on the sensor surface keeping in view of Fermi energy control mechanism and spillover mechanism. A stable sensor response of 77-85 % was obtained for SnO2-ZnO-Pd sensor structure over a wider range of temperature (160-260oC).

Copyright

References

Hide All
1. Sberveglieri, G, Sensors and Actuators B 23 (1995) 103109.
2. Wagh, M S, Patil, L A, Seth, T, Amalnerkar, D P, Materials Chemistry and Physics 84 (2004) 228233.
3. Tien, L C, Norton, D P, Gila, B P, Pearton, S J, Wang, H-T, Kang, B S, Ren, F, Applied Surface Science 253 (2007) 47484752.
4. Song, X, Wang, Z, Liu, Y, Wang, C and Li, L, Nanotechnology 20 (2009) 075501075506.
5. Haridas, D and Gupta, V, Sens. Actuators B (2012) Article in press.
6. Valachos, D S, Papadopoulos, C A, Avaritsiotis, J N, Appl. Phys. Lett. 69 (1996) 650652.
7. Yu, J H, Choi, G M, Sensors and Actuators B 61 (1999) 5967
8. Zhang, W-H and Zhang, W-D, Sensors and Actuators B 134 (2008) 403408
9. Papadopoulos, C A, Vlachos, D S, Avaritsiotis, J N, Sensors and Actuators B 32 (1996) 6169.

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed