Chiral-Selective Growth of Single-Walled Carbon Nanotubes on Lattice-Mismatched Epitaxial Cobalt Nanoparticles

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	Chiral-Selective Growth of Single-Walled Carbon Nanotubes on Lattice-Mismatched Epitaxial Cobalt Nanoparticles
	M. S. He; H. Jiang; B. L. Liu; P. V. Fedotov; A. I. Chernov; E. D. Obraztsova; F. Cavalca; J. B. Wagner; T. W. Hansen; I. V. Anoshkin; E. A. Obraztsova; A. V. Belkin; E. Sairanen; A. G. Nasibulin; J. Lehtonen; E. I. Kauppinen
	2013
发表期刊	Scientific Reports
ISSN	2045-2322
卷号	3
摘要	Controlling chirality in growth of single-walled carbon nanotubes (SWNTs) is important for exploiting their practical applications. For long it has been conceptually conceived that the structural control of SWNTs is potentially achievable by fabricating nanoparticle catalysts with proper structures on crystalline substrates via epitaxial growth techniques. Here, we have accomplished epitaxial formation of monometallic Co nanoparticles with well-defined crystal structure, and its use as a catalyst in the selective growth of SWNTs. Dynamics of Co nanoparticles formation and SWNT growth inside an atomic-resolution environmental transmission electron microscope at a low CO pressure was recorded. We achieved highly preferential growth of semiconducting SWNTs (similar to 90%) with an exceptionally large population of (6, 5) tubes (53%) in an ambient CO atmosphere. Particularly, we also demonstrated high enrichment in (7, 6) and (9, 4) at a low growth temperature. These findings open new perspectives both for structural control of SWNTs and for elucidating the growth mechanisms.
部门归属	[he, maoshuai ; sairanen, emma ; lehtonen, juha] aalto univ, sch chem technol, dept biotechnol & chem technol, fi-00076 aalto, finland. [jiang, hua ; liu, bilu ; anoshkin, ilya v. ; nasibulin, albert g. ; kauppinen, esko i.] aalto univ, sch sci, dept appl phys, nanomat grp, fi-00076 aalto, finland. [jiang, hua ; liu, bilu ; anoshkin, ilya v. ; nasibulin, albert g. ; kauppinen, esko i.] aalto univ, sch sci, ctr new mat, fi-00076 aalto, finland. [liu, bilu] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [fedotov, pavel v. ; chernov, alexander i. ; obraztsova, elena d. ; obraztsova, ekaterina a. ; belkin, alexey v.] am prokhorov gen phys inst ras, moscow 119991, russia. [cavalca, filippo ; wagner, jakob b. ; hansen, thomas w.] tech univ denmark, ctr electron nanoscopy, dk-2800 lyngby, denmark. ; he, ms (reprint author), aalto univ, sch chem technol, dept biotechnol & chem technol, pob 16100, fi-00076 aalto, finland. ; maoshuai.he@aalto.fi ; hua.jiang@aalto.fi
关键词	Electron-diffraction Catalyst Co Separation Decomposition Mo
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71255
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	M. S. He,H. Jiang,B. L. Liu,et al. Chiral-Selective Growth of Single-Walled Carbon Nanotubes on Lattice-Mismatched Epitaxial Cobalt Nanoparticles[J]. Scientific Reports,2013,3.
APA	M. S. He.,H. Jiang.,B. L. Liu.,P. V. Fedotov.,A. I. Chernov.,...&E. I. Kauppinen.(2013).Chiral-Selective Growth of Single-Walled Carbon Nanotubes on Lattice-Mismatched Epitaxial Cobalt Nanoparticles.Scientific Reports,3.
MLA	M. S. He,et al."Chiral-Selective Growth of Single-Walled Carbon Nanotubes on Lattice-Mismatched Epitaxial Cobalt Nanoparticles".Scientific Reports 3(2013).