title: Fabrication of carbon nanoscrolls from monolayer graphene.
abstract: A simple way of synthesizing carbon nanotube (CNT)/graphene (GN) nanoscroll core/shell nanostructures is demonstrated using molecular dynamics (MD) simulations. The simulations show that GN sheets can fully self-scroll onto CNTs when the CNT radius is larger than a threshold of about 10 A, forming a stable core/shell structure. Increasing the length of the GN sheet results in multilayered carbon nanoscroll (CNS) shells that exhibit a tubular structure similar to that of multiwall CNTs. The distances between the CNT and the GN wall or adjacent GN walls are about 3.4 A. It is found that the van der Waals force plays an important role in the formation of the CNT/GN nanoscroll core/shell-composite nanostructures. However, the chirality of the CNT and the GN sheet does not affect the self-scrolling process, which thus provides a simple way of controlling the chirality and physical properties of the resulting core/shell structure. It is expected that this preparation method of CNT/GN nanoscroll core/shell composites will lead to further development of a broad new class of carbon/carbon core/shell composites with enhanced properties and even introduce new functionalities to composite materials.
authors: China University of Petroleum, Dongying, Shandong 257061, People's Republic of China.
authors: Dan
authors: D
authors: Xia
authors: Qingzhong
authors: Q
authors: Xue
authors: Jie
authors: J
authors: Xie
authors: Huijuan
authors: H
authors: Chen
authors: Cheng
authors: C
authors: Lv
authors: Flemming
authors: F
authors: Besenbacher
authors: Mingdong
authors: M
authors: Dong
mesh_terms: D003198:Computer Simulation; D004734:Energy Metabolism; D006108:Graphite / Q000737:chemistry*; D008954:Models, Biological; D008958:Models, Molecular; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010316:Particle Size; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry; D013499:Surface Properties
chemical_list: D037742:Nanotubes, Carbon; D011108:Polymers; D006108:Graphite