H2S sensors based on tungsten oxide nanostructures

By C. Rout, M. Hegde, C. Rao. 2008

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Enhanced H2S sensing characteristics of SnO2 nanowires functionalized with CuO (2009, background): “Oxide semiconductors such as SnO2 [1], ZnO [2,3], O3 [4–7], In2O3 [8–10], CuO [11], and -FeMoO4 [12] have been xplored to detect trace concentrations of H2S.”
Semiconducting Metal Oxide Based Sensors for Selective Gas Pollutant Detection (2009, methodology): “72 nanowires at 250 °C where the response was not affected significantly up to 60% relative humidity (RH) [163,165].”
Chemical Sensors and Electronic Noses Based on 1-D Metal Oxide Nanostructures (2008, background): “the detection limits reported from CuO nanoribbon sensors (5 ppm [127]), In2O3 nanowire sensors (50 ppm [108]), and ZnO nanowire paste sensors (∼50 ppm [101]).”