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

Published online by Cambridge University Press:  23 August 2012

Divya Haridas  and
Vinay Gupta
Divya Haridas
Affiliation:
Keshav Mahavidyalaya, Pitampura, University of Delhi, India
Vinay Gupta
Affiliation:
Dept. of Physics and Astrophysics,University of Delhi, Delhi, India
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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).

Keywords

catalyticmethanesensor
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1454: Symposium HH – Nanocomposites, Nanostructures and Heterostructures of Correlated Oxide Systems , 2012 , pp. 227 - 232
Copyright
Copyright © Materials Research Society 2012

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References

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