Macroscopic synthesis of onion-like graphitic particles |
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| Affiliation: | 1. Department of Mechanical Engineering, Tsinghua University, Beijing, 100083, People''s Republic of China;2. Institute of Physics, Chinese Academy of Sciences, Beijing 100080, People''s Republic of China;1. College of Chemistry and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China;2. Department of Resources and Environmental Engineering, Xingtai Polytechnic College, Xingtai 054000, China;1. School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China;2. Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China;1. Department of Psychology, University at Buffalo, The State University of New York, 224 Park Hall, Buffalo, NY 14260-4100, USA;2. Department of Psychology, Faculty of Social Sciences, University of Lagos, Akoka-Yaba, Lagos, Nigeria;3. Division of Liberal Arts and Communication, Medaille College, 18 Agassiz Circle, Buffalo, NY 14214, USA;1. Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan;2. Battery Materials Research Laboratory, Kurashiki Research Center, Kuraray Co., Ltd., 2045-1, Sakazu, Kurashiki, Okayama 710-0801, Japan;1. School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China;2. Hubei Engineering University, College of Chemistry and Materials Science, Xiaogan 430205, China;3. The first affiliated hospital of Gannan Medical University, Ganzhou 341000, China;1. Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China;2. Laboratory of New Fiber Materials and Modern Textile, Growing Basis for State Key Laboratory, Qingdao University, Qingdao 266071, China;3. College of Physics, Qingdao University, No. 308 Ningxia Road, Qingdao, 266071, China;4. School of Chemical Engineering, The University of Queensland, Brisbane, QLD 4074, Australia |
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| Abstract: | In this paper, we present a method for macroscopic synthesis of onion-like graphitic particles, which may be used to study physical properties. This method is based on annealing carbon nanotubes under high pressure. By transmission electron microscopy (TEM), the microstructure of carbon nanotubes is found to transform into quasi-spherical graphitic structures when the sample has been treated at 770 °C and 950 °C under 5.5 GPa. The high pressure assumes an important role in this transformation. |
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