Effect of Supported Transition Metal on CO Sensing Performance Using SnO2 in Reducing Atmosphere

Hiroyuki Yamaura; Mari Nakaoka; Hidenori Yahiro

doi:10.4028/www.scientific.net/AMR.47-50.1518

Paper Titles

Effects of Surfactant Concentration on Step Height Reduction of SiO₂ in Chemical Mechanical Polishing with Ceria Slurry
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The Characteristics and Thermal Stability of CrN/AlSiN Multilayer Coatings
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Effect of Foreign Metal Doping on the Gas Sensing Behaviors of SnO₂-Based Gas Sensor
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Deposition of Pd onto SnO₂ Nanoparticles-Based Gas Sensors Using a Pd Complex as the Precursor
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H₂ Sensing Performance of TiO₂-Based Diode-Type Sensors
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Characterization of Intercalation Type Organic/MoO₃ Nanohybrids and their VOC Sensing Properties
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Effect of Supported Transition Metal on CO Sensing Performance Using SnO₂ in Reducing Atmosphere
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Resistive Type Sensor Using Ceria Thick Film with Nano Particles
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Fabrication of Nano Particles on Vertically Aligned Multi-Wall Carbon Nanotubes by E-Beam Evaporation
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 47-50Effect of Supported Transition Metal on CO Sensing...

Effect of Supported Transition Metal on CO Sensing Performance Using SnO₂ in Reducing Atmosphere

Abstract:

CO sensing properties of various transition metal oxide-loaded SnO2 sensors were investigated in a reducing atmosphere such as wet H2 gas. Among transition metal oxide-loaded SnO2 sensors used in the present study, 5wt%CuO-loaded SnO2 sensor exhibited the highest sensitivity to 1% CO in wet 50% H2 at around 150 °C, while it showed no sensitivity in dry 50% H2. From XRD analysis, CuO was reduced to metallic Cu in a reducing atmosphere at above 150 °C. H2-temperature-programmed reduction (H2-TPR) and diffuse reflectance fourier transform infrared (DRIFT-IR) spectroscopy measurements were carried out to discuss the sensor response mechanism.