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Ammonia sensing properties of thick and thin films of Ag6Mo10O33and Cr1·8Ti0·2O3+δ
Prabhu E, , Gnanasekar K.I, , Gnanasekaran T.
Published in Informa UK Limited
Volume: 24
Issue: 3
Pages: 170 - 175
Thick film of silver decamolybdate (Ag6Mo10O 33) was screen printed and thin film of chromium titanate Cr 1.8Ti0.2O3+δ was laser deposited on alumina substrates. Morphological features of the films were characterised and ammonia sensing properties were studied. Resistance of Ag6Mo 10O33 thick films decrease on introduction of NH 3 gas and these films were capable of sensing 2 ppm of ammonia in air at 578 K. Cr1.8Ti0.2O3+δ thin films could sense 20 ppm of ammonia in air at 673 K, which exhibited increase in resistance towards NH3 gas. © 2008 Institute of Materials, Minerals and Mining.
About the journal
JournalSurface Engineering
PublisherInforma UK Limited
Open AccessNo