Research on Gas Sensing Properties of Orthorhombic Molybdenum Oxide Based Sensor to Hydrogen Sulfide
In this study, orthorhombic molybdenum oxide α-MoO3 nanorods sensing materials were synthesized with traditional hydrothermal synthesis route and characterized by X-ray powder diffraction, field emission scanning electron microscopy and Brunauer-Emmett-Teller
measurement. The average length and width of the synthesis α-MoO3 nanorod is about 300 and 100 nm. Planar-type gas sensor with the synthesized α-MoO3 nanorods powders was prepared and its sensing properties to hydrogen sulfide H2S
were systematically investigated based on the CGS-1TP intelligent gas sensing analysis system. The optimum operating temperature of prepared α-MoO3 nanorods sensor to H2S gas was about 180 °C. Good linearity ranging from 2 ppm to 100 ppm, quick response-recovery
characteristic, excellent stability and reproducibility were also obtained. Moreover, its sensing mechanism was also discussed with the chemisorbed oxygen absorption and the surface depletion region model.
Keywords: GAS SENSING PROPERTIES; HYDROGEN SULFIDE; HYDROTHERMAL SYNTHESIS; SENSING MECHANISM; α-MOO3 NANORODS
Document Type: Research Article
Publication date: 01 October 2017
- Journal of Nanoelectronics and Optoelectronics (JNO) is an international and cross-disciplinary peer reviewed journal to consolidate emerging experimental and theoretical research activities in the areas of nanoscale electronic and optoelectronic materials and devices into a single and unique reference source. JNO aims to facilitate the dissemination of interdisciplinary research results in the inter-related and converging fields of nanoelectronics and optoelectronics.
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