C 60 fullerene decoration of carbon nanotubes
- PDF / 2,283,414 Bytes
- 6 Pages / 612 x 792 pts (letter) Page_size
- 83 Downloads / 246 Views
AND LIQUIDS
C60 Fullerene Decoration of Carbon Nanotubes V. A. Demina*, V. D. Blankb,c,d, A. R. Karaevab, B. A. Kulnitskiyb,d, V. Z. Mordkovichb,d, Yu. N. Parkhomenkoc, I. A. Perezhoginb,d,e, M. Yu. Popovb,c,d, E. A. Skrylevac, S. A. Urvanovb, and L. A. Chernozatonskiia,f a Emanuel
Institute of Biochemical Physics, Russian Academy of Sciences, ul. Kosygina 4, Moscow, 119334 Russia b Technological Institute for Superhard and Novel Carbon Materials, Troitsk, Moscow, 142190 Russia c National University of Science and Technology MISiS, Leninskii pr. 4, Moscow, 119049 Russia d Moscow Institute of Physics and Technology (State University), Institutskii per. 9, Dolgoprudnyi, Moscow oblast, 141700 Russia e Lomonosov Moscow State University, Moscow, 119991 Russia f Research School for Chemistry and Technology of Polymer Materials, Plekhanov Russian University of Economics, Moscow, 117997 Russia *e-mail: [email protected] Received February 25, 2016
Abstract—A new fully carbon nanocomposite material is synthesized by the immersion of carbon nanotubes in a fullerene solution in carbon disulfide. The presence of a dense layer of fullerene molecules on the outer nanotube surface is demonstrated by TEM and XPS. Fullerenes are redistributed on the nanotube surface during a long-term action of an electron beam, which points to the existence of a molecular bond between a nanotube and fullerenes. Theoretical calculations show that the formation of a fullerene shell begins with the attachment of one C60 molecule to a defect on the nanotube surface. DOI: 10.1134/S1063776116130021
1. INTRODUCTION Fullerenes and carbon nanotubes (CNTs)—the first carbon nanostructures to be synthesized [1, 2]— are the allotropic modifications of carbon with unique properties. A large variety of hybrids based on nanotubes and fullerenes exist: for example, they include endohedral “peapods” [3], exohedral covalent nanobuds [4], noncovalent fullerene–graphite compounds [5], and functionalized nanotube–fullerene [6, 7]. CNT–fullerene hybrids are promising for application as organic solar cells [8], since, on the one hand, fullerenes are electron acceptors and can easily be excited by light and, on the other, a nanotube is a one-dimensional structure, which is an ideal n- or ptype semiconductor in the active layer of a solar cell. Thus, a combination of CNT and fullerenes is promising for creating photovoltaic devices based on them. One of the properties of fullerenes is their ability to form molecular structures, such as an fcc fullerite crystal, i.e., a hexagonal layer one fullerene thick, on Cu(110) and Ni(110) substrates [9] and fullerene clusters on graphene [10]. The authors of [11] proposed
and theoretically considered models for CNTs inside a fullerene coat, i.e., a close-packed layer of C60. The purpose of this work is to perform and to theoretically analyze the deposition of a fullerene layer on multiwalled CNTs. 2. EXPERIMENTAL 2.1. Synthesis of a Fullerene Layer on a Carbon Nanotube Multilayer CNTs 4–30 nm in diameter were synthesized fro
Data Loading...
