Title of article :
Semiconducting metal oxides as sensors for environmentally hazardous gases
Author/Authors :
N. Wetchakun، نويسنده , , K. and Samerjai، نويسنده , , T. and Tamaekong، نويسنده , , N. and Liewhiran، نويسنده , , C. and Siriwong، نويسنده , , C. and Kruefu، نويسنده , , V. and Wisitsoraat، نويسنده , , A. and Tuantranont، نويسنده , , A. and Phanichphant، نويسنده , , S.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Abstract :
This article extensively reviews the recent development of semiconductor metal oxide gas sensors for environmentally hazardous gases including NO2, NO, N2O, H2S, CO, NH3, CH4, SO2 and CO2. The gas sensing properties of differently-prepared metal oxides and loaded metal oxides towards nine environmentally hazardous gases have been individually compared and digested. Promising materials for sensitive and selective detection of each hazardous gas have been identified. For instance, unloaded WO3 nanostructures are the most promising candidates for NO2 sensing while metal catalyst loaded WO3 and gold-loaded SnO2 sensors are among the most effective for NO and N2O sensing, respectively. Moreover, related gas-sensing mechanisms are comprehensively discussed.
Keywords :
Environmentally hazardous gases , Gas sensors , Semiconducting metal oxides
Journal title :
Sensors and Actuators B: Chemical
Journal title :
Sensors and Actuators B: Chemical
