Chemistry Letters · 1991 · 146 citations · 3 references
Natural SciencesMaterials EngineeringMaterials ScienceInorganic ChemistrySensorsSurface ChemistryChemical SensorsGas SensorsMetal Oxide NanomaterialsMetal OxidesSensor MaterialsSurface PhysicsElectrochemical Gas SensorsMetal Oxide Gas SensorsMetal Oxide Sensor MaterialsSensing ApplicationsSolid-state Sensing
Abstract CuO-loaded SnO2 element was found to show extraordinary sensing properties to H2S in air, with such high sensitivity as ca. 35 000 to 50 ppm H2S at 200 °C and switching-like recovery on turning off H2S. The change of state between CuO and CuS on the surface of SnO2 seems to be responsible for such unique sensing properties.
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