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

P. Tyagi | Zendy; Anjali Sharma | Zendy; Monika Tomar | Zendy; Vinay Gupta | Zendy

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

Author(s) -

P. Tyagi,

Anjali Sharma,

Monika Tomar,

Vinay Gupta

Publication year - 2014

Publication title -

conference papers in science

Language(s) - English

Resource type - Journals

eISSN - 2356-6108

pISSN - 2356-6094

DOI - 10.1155/2014/812627

Subject(s) - catalysis , materials science , tin oxide , selectivity , sputtering , thin film , operating temperature , tin , analytical chemistry (journal) , nanoclusters , sputter deposition , oxide , chemical engineering , inorganic chemistry , nanotechnology , metallurgy , chemistry , organic chemistry , electrical engineering , engineering

The present work shows the SO2 gas sensing property of SnO2 thin film based sensor prepared by using RF sputtering technique. Different catalysts (MgO and V2O5) in form of nanoclusters having diameter of 600 μm have been loaded on SnO2 surface to detect SO2 gas. The sensing response of all these films towards SO2 is monitored. Microstructural studies have been carried out using XRD and UV-Visible Spectrophotometer and a good correlation has been found between the microstructural and gas sensing properties of these deposited samples. Both catalysts when incorporated with SnO2 film show high selectivity towards SO2 gas at lower operating temperature. MgO gives a sensitivity of 317% at an operating temperature of 280°C towards 500 ppm of SO2 gas whereas V2O5 catalyst gives a sensitivity of 166% at 280°C for the same amount of gas.

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