Highly sensitive C2H2 gas sensor based on Ag modified ZnO nanorods |
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| Affiliation: | 1. College of Communication Engineering, Jilin University, Changchun, 130022, Jilin, China;2. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, Jilin, China;1. The Collaboration Innovation Center of Coal Safety Production of Henan Province, Henan Polytechnic University, Jiaozuo, 454000, China;2. School of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, 454000, China;3. School of Materials Science and Engineering, Cultivating Base for Key Laboratory of Environment-friendly Inorganic Materials in University of Henan Province, Henan Polytechnic University, Jiaozuo, 454000, China;4. State Key Laboratory Cultivation Bases for Gas Geology and Gas Control (Henan Polytechnic University), Jiaozuo, 454000, China;1. College of Communication Engineering, Jilin University, Changchun, 130022 Jilin, China;2. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012 Jilin, China;3. Shenzhen Oradar Technology Company Limited, Shenzhen, 518063 Guangdong, China;1. College of Physics, Qingdao University, Qingdao 266071, China;2. Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300071, China;3. College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China;1. State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Key Laboratory of Advanced Gas Sensors, Jilin University, Changchun 130012, Jilin Province, China;2. College of Communication Engineering, Jilin University, Changchun 130022, Jilin, China;1. Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev str., bl. 11, 1113 Sofia, Bulgaria;2. Institute of Electronics, Bulgarian Academy of Sciences, 72 Tsarigradsko Chaussee, Sofia 1784, Bulgaria |
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| Abstract: | The sliver (Ag) modified zinc oxide (ZnO) nanorods were successfully obtained with a simplified and environmentally friendly solvothermal method. Materials characterization indicated that the metallic Ag was located on the outside of ZnO nanorods after annealing. In comparison with ZnO nanorods, Ag modified ZnO (Ag–ZnO) nanorods exhibited a considerably enhanced response to C2H2. The response of the 3 at% Ag–ZnO based sensor operating at 175 °C is 539 (Ra/Rg), which is the highest value among all the sensors in detecting 100 ppm C2H2. The Ag–ZnO based sensors exhibited fast response speed, lower operation temperature and higher selectivity. |
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| Keywords: | Acetylene Gas sensor Ag modification ZnO Nanorods |
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