Alcohol-assisted rapid growth of vertically aligned carbon nanotube arrays |
| |
| Affiliation: | 1. College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;2. Institute of Bio-inspired Structure and Surface Engineering, College of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;3. Division of Advanced Nanomaterials, Key Laboratory of Nanodevices and Applications, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Suzhou 215123, China;1. Key Laboratory of Aerospace Advanced Materials and Performance, Department of Materials Science and Engineering, Beihang University, Beijing 100191, China;2. Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China;1. Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, No. 37 Xueyuan Road, Haidian District, Beijing 100191, China;2. Suzhou Institute of Nano-Tech and Nano-Bionics, No. 398 Ruoshui Road, Suzhou 215123, China;3. Beijing Key Laboratory of Civil Aircraft Structures and Composite Materials, Beijing Aeronautical Science & Technology Research Institute of COMAC, Future Science and Technology Park, Changping District, Beijing 102211, China;1. Department of Nuclear Science & Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;2. Jiangsu Key Laboratory of Nuclear Energy Equipment Materials Engineering, Nanjing 210016, China;3. Institute of Bio-inspired Structure and Surface Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;4. College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;5. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;1. Department of Applied Chemistry, Meijo University, Nagoya 468-8502, Japan;2. Department of Materials Science and Engineering, Meijo University, Nagoya 468-8502, Japan;3. CSIR-Central Mechanical Engineering Research Institute, Durgapur 713209, West Bengal, India;4. Nanotube Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8565, Japan;5. Faculty of Science and Technology, Meijo University, Nagoya 468-8502, Japan;1. Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China;2. Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong;3. Beijing Zhenxing Institute of Metrology and Measurement, Beijing, 100074, China;4. Department of Space Science Research, Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing, 100094, China;5. School of Microelectronics, Southern University of Science and Technology, Shenzhen, 518055, China;6. Department of Electronic and Computer Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong;7. Hamad Bin Khalifa University, Education City Doha, Qatar;1. School of Materials Science and Engineering, Harbin Institute of Technology, 150001, PR China;2. Division of Advanced Nanomaterials & Innovation Center for Advanced Nanocomposites, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 215123, PR China;3. Department of Structural Integrity, COMAC Beijing Aeronautical Science & Technology, 102211, PR China |
| |
| Abstract: | Millimeter-to-centimeter scale vertically aligned carbon nanotube (VACNT) arrays are widely studied because of their immense potential in a range of applications. Catalyst control during chemical vapor deposition (CVD) is key to maintain the sustained growth of VACNT arrays. Herein, we achieved ultrafast growth of VACNT arrays using Fe/Al2O3 catalysts by ethanol-assisted two-zone CVD. One zone was set at temperatures above 850 °C to pyrolyze the carbon source and the other zone was set at 760 °C for VACNT deposition. By tuning synthesis parameters, up to 7 mm long VACNT arrays could be grown within 45 min, with a maximal growth rate of ∼280 μm/min. Our study indicates that the introduction of alcohol vapor and separation of growth zones from the carbon decomposition zone help reduce catalyst particle deactivation and accelerate the carbon source pyrolysis, leading to the promotion of VACNT array growth. We also observed that the catalyst film thickness did not significantly affect the CNT growth rate and microstructures under the conditions of our study. Additionally, the ultralong CNTs showed better processability with less structural deformation when exposed to solvent and polymer solutions. Our results demonstrate significant progress towards commercial production and application of VACNT arrays. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
