Mixed oxides as gas sensors

This paper reviews the current work carried out on mixed-oxide systems such as SnO2–WO3, TiO2–WO3 and SnO2–TiO2 with the ultimate aim of the application in gas sensing devices

K Zakrzewska

2002

Key concepts

Scholarcy highlights

  • This paper reviews the current work carried out on mixed-oxide systems such as SnO2–WO3, TiO2–WO3 and SnO2–TiO2 with the ultimate aim of the application in gas sensing devices
  • Materials have been prepared in a form of polycrystalline ceramics and thin films by a variety of methods including impregnation, co-precipitation, sol–gel and sputtering
  • The importance of non-destructive optical methods of measurements, especially those based on the use of an integrating sphere, is pointed out
  • The sensor responses to hydrogen and methane are presented for SnO2–TiO2

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