In2O3 nanosheets array directly grown on Al2O3 ceramic tube and their gas sensing performance |
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| Affiliation: | 1. Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan;2. Graduate Institute of Electro-Optical Engineering and Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan;1. International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology, Hanoi, Viet Nam;2. Department of Materials Science and Engineering, Le Quy Don Technical University, Hanoi, Viet Nam;3. Inkyu Park, Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea;4. Faculty of Electrical and Electronic Engineering, Phenikaa Institute for Advanced Study (PIAS), Phenikaa University, Yen Nghia, Ha-Dong district, Hanoi, 10000, Viet Nam;5. Phenikaa Research and Technology Institute (PRATI), A&A Green Phoenix Group, 167 Hoang Ngan, Hanoi, 10000, Viet Nam;1. Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), The Key Laboratory of Functional Molecular Solids, Ministry of Education, Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, PR China;2. Institute of Energy, Hefei Comprehensive National Science Center, University of Science and Technology of China, Hefei 230000, PR China;1. University of Warwick, School of Engineering, Coventry, CV4 7AL, UK;2. Cambridge CMOS Sensors, Deanland House,160 Cowley Road, Cambridge, CB4 0DL, UK |
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| Abstract: | Arrayed In2O3 nanosheets were synthesized directly via a two-step solution approach on an Al2O3 ceramic tube. Their morphology and structure were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV–Vis absorption spectroscopy, and scanning electron microscopy (SEM). The results reveal that the length of each nanosheet is about 1 µm, the width of the bottom of nanosheet is about 200 nm. Importantly, the In2O3 nanosheets with large specific surface area possess highly sensing performance for ethanol detection. The response value to 100 ppm ethanol is about 45 at an operating temperature of 280 °C, and the response and recovery time are extremely short. It is expected that the directly grown In2O3 nanosheets with large specific surface area and excellent sensing properties will become a promising functional material in monitoring and detecting ethanol. |
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| Keywords: | Directly grown Ethanol Gas sensors |
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