Bulk synthesis of carbon nanostructures: Hollow stacked-cone-helices by chemical vapor deposition |
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| Authors: | Yunxia Yang Julian Rosalie Laure Bourgeois Paul A. Webley |
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| Affiliation: | 1. Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia;2. Department of Materials Engineering, Monash University, Clayton, VIC 3800, Australia;3. Monash Centre for Electron Microscopy, Monash University, Clayton, VIC 3800, Australia;1. Superconductors and Thin Film Laboratory, Department of Physics, Faculty of Science, University Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia;2. School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia;1. Carbon Materials Innovation Center (CMIC), BASF SE, 67056 Ludwigshafen, Germany;2. FET Systems, BASF SE, 67056 Ludwigshafen, Germany;3. Material Physics Research, BASF SE, 67056 Ludwigshafen, Germany;1. College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China;2. Nation Key Laboratory of Fundamental Science of Micro/Nano-Devices and System Technology, Chongqing University, Chongqing 400044, PR China;3. Institute of Process Engineering, Chinese Academy of Science, Beijing 100190, PR China;4. College of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400044, PR China |
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| Abstract: | Bulk synthesis of hollow carbon stacked-cone-helices of diameter from 10 nm to 0.5 μm is reported. The fibres’ walls are made up of parallel stacked-cone-like structures with an inter-cone distance from 3.38 to 3.5 Å. Apex angles observed are in the range from 30° to 110°, suggesting that the carbon nanofibres are constructed by a single graphene sheet which forms a helical structure instead of a stacked cone or open stacked cup structure. A new 3-D construction of the stacked-cone-helix is presented. Our results show that metal Pd catalyst plays a key role in obtaining carbon products with cone-helix structure and high yield (200%). These novel fibres could be used as nano-wire templates, micro-spray, and field emitters. |
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