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Fabrication and Characterization of Highly Sensitive Methane Sensor Based on Titanium Dioxide

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Methane CH4 is an important fault characteristic gas dissolved in power transformer oil with overheating or discharging fault. In this study, we reported the microstructure, growth mechanism and gas-sensing properties of hierarchical TiO2 sensing materials synthesized by a simple and environment friendly hydrothermal method. We found that synthesized TiO2 nanoflowers and nanorods sensing materials are typical anatase structure. Further research indicated that heating temperature and heating time play critical roles in synthesizing the nanoflowers. Compared with the synthesized TiO2 nanorods, the obtained TiO2 nanoflowers exhibited higher gas response as well as lower working temperature to CH4. Moreover, its sensing mechanism was also discussed. All results demonstrate that the synthesized TiO2 nanoflowers sensing materials may be a promising candidate for fabricating high-performance CH4 sensor.
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Keywords: GAS SENSOR; GROWTH MECHANISM; HYDROTHERMAL METHOD; METHANE; TITANIUM DIOXIDE

Document Type: Research Article

Publication date: August 1, 2017

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  • 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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