Importance of Carbon Solubility and Wetting Properties of Nickel Nanoparticles for Single Wall Nanotube Growth

被引:89
作者
Diarra, M. [1 ,2 ,3 ]
Zappelli, A. [1 ,2 ]
Amara, H. [3 ]
Ducastelle, F. [3 ]
Bichara, C. [1 ,2 ]
机构
[1] CNRS, Ctr Interdisciplinaire Nanosci Marseille, F-13288 Marseille 09, France
[2] Aix Marseille Univ, F-13288 Marseille 09, France
[3] ONERA CNRS, Lab Etud Microstruct, F-92322 Chatillon, France
关键词
CHIRALITY; NUCLEATION; DYNAMICS;
D O I
10.1103/PhysRevLett.109.185501
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Optimized growth of single wall carbon nanotubes requires full knowledge of the actual state of the catalyst nanoparticle and its interface with the tube. Using tight binding based atomistic computer simulations, we calculate carbon adsorption isotherms on nanoparticles of nickel, a typical catalyst, and show that carbon solubility increases for smaller nanoparticles that are either molten or surface molten under experimental conditions. Increasing carbon content favors the dewetting of Ni nanoparticles with respect to sp(2) carbon walls, a necessary property to limit catalyst encapsulation and deactivation. Grand canonical Monte Carlo simulations of the growth of tube embryos show that wetting properties of the nanoparticles, controlled by carbon solubility, are of fundamental importance to enable the growth, shedding new light on the growth mechanisms.
引用
收藏
页数:5
相关论文
共 29 条
[1]   Understanding the nucleation mechanisms of carbon nanotubes in catalytic chemical vapor deposition [J].
Amara, H. ;
Bichara, C. ;
Ducastelle, F. .
PHYSICAL REVIEW LETTERS, 2008, 100 (05)
[2]   Tight-binding potential for atomistic simulations of carbon interacting with transition metals: Application to the Ni-C system [J].
Amara, H. ;
Roussel, J. -M. ;
Bichara, C. ;
Gaspard, J. -P. ;
Ducastelle, F. .
PHYSICAL REVIEW B, 2009, 79 (01)
[3]   Computational Studies of Metal-Carbon Nanotube Interfaces for Regrowth and Electronic Transport [J].
Borjesson, Anders ;
Zhu, Wuming ;
Amara, Hakim ;
Bichara, Christophe ;
Bolton, Kim .
NANO LETTERS, 2009, 9 (03) :1117-1120
[4]  
Chiang WH, 2009, NAT MATER, V8, P882, DOI [10.1038/NMAT2531, 10.1038/nmat2531]
[5]   Prediction of carbon nanotube growth success by the analysis of carbon-catalyst binary phase diagrams [J].
Deck, CP ;
Vecchio, K .
CARBON, 2006, 44 (02) :267-275
[6]   Iron-carbide cluster thermal dynamics for catalyzed carbon nanotube growth [J].
Ding, F ;
Bolton, K ;
Rosén, A .
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A, 2004, 22 (04) :1471-1476
[7]   Dislocation theory of chirality-controlled nanotube growth [J].
Ding, Feng ;
Harutyunyan, Avetik R. ;
Yakobson, Boris I. .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2009, 106 (08) :2506-2509
[8]   CAPILLARITY AND WETTING OF CARBON NANOTUBES [J].
DUJARDIN, E ;
EBBESEN, TW ;
HIURA, H ;
TANIGAKI, K .
SCIENCE, 1994, 265 (5180) :1850-1852
[9]   Evidence of Correlation between Catalyst Particles and the Single-Wall Carbon Nanotube Diameter: A First Step towards Chirality Control [J].
Fiawoo, M. -F. C. ;
Bonnot, A. -M. ;
Amara, H. ;
Bichara, C. ;
Thibault-Penisson, J. ;
Loiseau, A. .
PHYSICAL REVIEW LETTERS, 2012, 108 (19)
[10]  
Frenkel D., 2002, UNDERSTANDING MOL SI, V2nd edn