TAILIEUCHUNG - NO2 gas sensor based on QCM coated with iron oxide nanorods

Iron oxide nanorods were synthesized by chemical co-precipitation method. The structural and morphological characteristics of the as-synthesized nanorods were analyzed by Xray diffraction (XRD) and scanning electron microscopy. The results show that the iron oxide nanorods include the mixture of Fe3O4, γ-Fe2O3 and FeOOH with the diameter and the length of iron oxide nanorods to be 30 and 100 nm, respectively. The iron oxide nanorods were then dispersed and deposited on the gold electrode of quartz crystal microbalance (QCM) for the gas sensor. The iron oxide nanorods based QCM sensor was tested with various concentrations of numerous toxic gases at room temperature, including nitrogen dioxide (NO2), sulfur dioxide (SO2), ammonia (NH3), and carbon monoxide (CO). The testing results indicate that the fabricated sensor exhibits high sensing performance to NO2 gas in the concentration range from 5 to 20 ppm. | Vietnam Journal of Science and Technology 58 2 2020 204-211 doi 2525-2518 58 2 14225 cros Powered by no2 gas sensor based on qcm coated with IRON OXIDE NANORODS Nguyen Thanh Vinh1 2 Vu Ngoc Phan3 Man Hoai Nam4 Le Anh Tuan5 Nguyen Van Quy1 international Training Institute for Materials Science Hanoi University of Science and Technology No. 1 Dai Co Viet Road Hai Ba Trung District Ha Noi Viet Nam 2University of Transport Technology 54 Trieu Khuc Thanh Xuan District Ha Noi Viet Nam 3Faculty of Biotechnology Chemistry and Environmental Phenikaa University Ha Noi Viet Nam 4Institute of Materials Science Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Road Cau Giay Ha Noi Viet Nam 5Phenikaa University Nano Institute Phenikaa University Ha Dong Ha Noi Viet Nam Email quy@ Received 16 August 2019 Accepted for publication 27 October 2019 Abstract. Iron oxide nanorods were synthesized by chemical co-precipitation method. The structural and morphological characteristics of the as-synthesized nanorods were analyzed by X-ray diffraction XRD and scanning electron microscopy. The results show that the iron oxide nanorods include the mixture of Fe3O4 Y-Fe2O3 and FeOOH with the diameter and the length of iron oxide nanorods to be 30 and 100 nm respectively. The iron oxide nanorods were then dispersed and deposited on the gold electrode of quartz crystal microbalance QCM for the gas sensor. The iron oxide nanorods based QCM sensor was tested with various concentrations of numerous toxic gases at room temperature including nitrogen dioxide NO2 sulfur dioxide SO2 ammonia NH3 and carbon monoxide CO . The testing results indicate that the fabricated sensor exhibits high sensing performance to NO2 gas in the concentration range from 5 to 20 ppm. Keywords QCM NO2 gas sensor iron oxide nanorods. Classification numbers . 1. INTRODUCTION Nowadays rapid and continuous development of industries .

• Hoá học
• Gas sensor
• Iron oxide
• NO2 gas sensor based
• QCM coated with iron oxide nanorods
• Iron oxide nanorods
• Màng mỏng nhạy khí
• Gas Sensor thin film
• Thuyết trình Màng mỏng nhạy khí
• Các loại sensor
• Tính chất sensor
• Đặc tính của sensor
• Thin film
• Hydrogen sulfide gas
• Gas sensitive properties
• X ray diffraction
• MQ 135 Gas Sensor
• Wide detecting scope
• Fast response
• High sensitivity Stable
• Simple drive circuit
• MQ 2 Semiconductor Sensor
• Combustible Gas
• Semiconductor Sensor
• Technical Data
• Basic test loop
• Sensitivity Characteristics
• Journal of Science and Technology
• Study the response of gas
• Gas sensor usin Zno nanorods synthesized
• Synthesize large quantities ZnO nanorods
• Optoelectronicand gassensing applications
• Low dimensional nano structures ZnO
• Gradient sensor array
• Electronic nose
• Tin oxide nanowire
• Volatile organic compounds detection
• CuO nanoplates
• H2 sensin
• CuO nanoplates for gas sensor
• Hydrothermal synthesis of CuO nanoplates
• Metal oxide nanomaterials
• Hydrothermal synthesis
• Zn2SnO4 nanoparticles
• Thanol sensor
• Synthesized materials
• BMC Chemistry
• Room temperature gas detection
• CuO nanoparticles
• Gas sensing especially
• Heterojunction sensor exhibits
• Tungsten oxide nanobricks
• Low resistance gas sensor
• Graphene oxide
• Low temperature of Graphene oxide
• Ammonia gas sensing properties
• Carbon nanotubes
• In situ fabrication of SnO2 nanowires
• Carbon nanotubes heterojunctions based
• NO2 gas sensors
• Hydrothermal method
• Octahedron Zn2SnO4
• Ethanol sensing
• High performance ethanol sensor
• TGS sensors
• NH3 gas concentrations
• Error correction effects
• Artificial neural network
• Metal Oxide based sensors
• Green method
• Reduced graphene oxide
• Advanced materials and devices
• Thermal gravimetric analysis
• Mathematical science
• Physical science
• Field emission electron microscopy
• Energy dispersive X ray spectroscopy
• Advanced materials
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• Edge grown SnO2 nanowires
• Gas sensors
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• Lung cancer
• Gastric cancer
• kiến thức vật lý căn bản
• các dạng bài tập vật lí
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• công suất điện
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• nghiên cứu vật lý
• báo cáo khoa học
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• công trình nghiên cứu về hóa học
• tài liệu về hóa học
• cách trình bày báo cáo
• Volatile Constituents
• Herbal Medicines
• Gas Chromatography
• Designing Novel Functional
• Chromatography
• Chemical Composition
• Journal of Chemistry
• Influences of the mole ratio SnO2 NaOH
• The growth of SnO2 nanorods
• Preparing SnO2 nanorods
• Gas sensor based on SnO2 materials
• BMC Cancer
• E nose
• In vitro
• Volatile organic compounds
• Exhaled breath
• Human bodies
• Scanning electron microcopy