Effect of MgO and V₂O₅ Catalyst on the Sensing Behaviour of Tin Oxide Thin Film for SO₂ Gas

Table 1

Sensing response characteristics of the prepared sensors at an operating temperature of 280°C.

Serial number	Sample	Response (%)	Response time (s)	Recovery time (s)
1	SnO2	107	—	—
2	SnO2 + V2O5	166	90	43
3	SnO2 + MgO	317	59	52