Abstract
Abstract We demonstrate the microstructure and room-temperature H2 sensing properties of undoped, Pt-doped, and Pd-doped SnO2 nanowires (SNWs). SNWs with a tetragonal structure were synthesized by thermal evaporation of tin grains at 900 °C. Gas sensors based on undoped, Pt-doped, and Pd-doped SNWs showed a reversible response to H2 at room temperature. The response was improved in the order undoped < Pt-doped < Pd-doped SNWs under the same conditions.
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