Synthesis of defect-rich, (001) faceted-ZnO nanorod on a FTO substrate as efficient photocatalysts for dehydrogenation of isopropanol to acetone |
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| Institution: | 1. International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST), No.1 Dai Co Viet, Hanoi, Vietnam;2. Advanced Institute of Science and Technology (AIST), Hanoi University of Science and Technology (HUST), No.1 Dai Co Viet, Hanoi, Vietnam;3. University of Transportation and Communication, No. 3 Cau Giay, Hanoi, Vietnam;4. Vietnam-Japan International Institute for Science of Technology (VJIIST), Hanoi University of Science and Technology (HUST), No.1 Dai Co Viet, Hanoi, Vietnam;1. College of Physics and Energy, Fujian Normal University, Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, Fuzhou 350117, China;2. Fujian Provincial Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Xiamen 361005, China;1. Facultad de Ingeniería, Universidad Nacional del Comahue, Buenos Aires 1400, 8300 Neuquén, Argentina;2. Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas – CONICET-UNCo, Argentina;3. Dpto. de Física, Universidad Nacional del Sur, Bahía Blanca, Argentina;4. Instituto de Física – UNS-CONICET, Argentina;5. Centro Atómico Bariloche e Instituto Balseiro, Avda. Bustillo 9500, 8400 Bariloche, Argentina;6. CONICET, Argentina |
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| Abstract: | Highly oriented ZnO nanorod was successfully synthesised on Ag nanoseed coated FTO substrate via a microwave hydrolysis approach. It was found that the morphology and the optical properties of the ZnO nanorod are strongly influenced by the power of the microwave irradiation used during the growth process. The aspect ratio of the nanorods changed from high to low with the increasing of microwave power. It was also found that the optical band gap of the ZnO nanorod red shifted with the increasing of the microwave power, reflecting an excellent tune ability of the optical properties of ZnO nanorods. The photocatalytic activity of these unique nanorod was evaluated by a dehydrogenation process of isopropanol to acetone in the presence of ZnO nanorod. It was found that the ZnO nanorod exhibited an excellent catalytic performance by showing an ability to accelerate the production of 0.031 mol L?1 of acetone within only 35 min or 0.9 mmol L?1 min?1 from isopropyl alcohol dehydrogenation. It was almost no conversion from isopropyl alcohol when ZnO nanorods was absence during the reaction. In this report, a detailed mechanism of ZnO nanorod formation and the relationship between morphology and optical energy band gap are described. |
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| Keywords: | (001)-Facet ZnO nanorods Microwave-assisted hydrothermal Catalytic dehydrogenation |
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