Growth characteristics of spherical titanium oxide nanoparticles during the rapid gaseous detonation reaction |
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| Institution: | 1. State Key Laboratory for Geo-mechanics and Deep Underground Engineering, School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China;2. Laboratory for Precision and Nano Processing Technologies, School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney 2052, Australia;3. Department of Safety Engineering, China Institute of Industrial Relations, Beijing 100048, China;1. Electroceramics Group, Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz 13876-71557, Iran;2. Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran;1. Department of Mechanical Engineering, Babol University of Technology, Babol, Islamic Republic of Iran;2. Department of Mathematics, Statistics and Physics, Qatar University, Doha 2713, Qatar;1. Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, Novosibirsk 630090, Russia;2. Functional Electronics Laboratory, Tomsk State University, Tomsk 634050, Russia;3. Laboratory of Semiconductor and Dielectric Materials, Novosibirsk State University, Novosibirsk 630090, Russia;4. Laboratory of Crystal Chemistry, Institute of Inorganic Chemistry, SB RAS, Novosibirsk 630090, Russia;5. Laboratory of Nanodiagnostics and Nanolithography, Institute of Semiconductor Physics, SB RAS, Novosibirsk 630090, Russia;6. Laboratory of Crystal Growth, Institute of Geology and Mineralogy, SB RAS, Novosibirsk 630090, Russia;7. Geology and Mineralogy Department, Novosibirsk State University, Novosibirsk 630090, Russia;8. Spintronics Laboratory, Saint Petersburg State University, Saint Petersburg 198504, Russia;9. Laboratory of Research Methods of Composition and Structure of Functional Materials, Novosibirsk State University, Novosibirsk 630090, Russia;1. School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK;2. Laboratory of Bio-Inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;3. Institute of Particle Science & Engineering, School of Process, Environmental and Materials Engineering, University of Leeds, Leeds LS2 9 J, UK;4. School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK |
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| Abstract: | The nanosize grain growth characteristics of spherical single-crystal titanium oxide (TiO2) during the rapid gaseous detonation reaction are discussed. Based on the experimental conditions and the Chapman–Jouguet theory, the Kruis model was introduced to simulate the growth characteristics of spherical TiO2 nanoparticles obtained under high pressure, high temperature and by rapid reaction. The results show that the numerical analysis can satisfactorily predict the growth characteristics of spherical TiO2 nanoparticles with diameters of 15–300 nm at different affecting factors, such as concentration of particles, reaction temperature and time, which are in agreement with the obtained experimental results. We found that the increase of the gas-phase reaction temperature, time, and particle concentration affects the growth tendency of spherical nanocrystal TiO2, which provides effective theoretical support for the controllable synthesis of multi-scale nanoparticles. |
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| Keywords: | Gaseous phase detonation chemistry Chapman–Jouguet theory Kruis model Particle growth characterization |
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