Importance of Oxygen in the Metal-Free Catalytic Growth of Single-Walled Carbon Nanotubes from SiO(x) by a Vapor-Solid-Solid Mechanism

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	Importance of Oxygen in the Metal-Free Catalytic Growth of Single-Walled Carbon Nanotubes from SiO(x) by a Vapor-Solid-Solid Mechanism
	B. L. Liu; D. M. Tang; C. H. Sun; C. Liu; W. C. Ren; F. Li; W. J. Yu; L. C. Yin; L. L. Zhang; C. B. Jiang; H. M. Cheng
	2011
发表期刊	Journal of the American Chemical Society
ISSN	0002-7863
卷号	133 期号:2 页码:197-199
摘要	To understand in-depth the nature of the catalyst and the growth mechanism of single-walled carbon nanotubes (SWCNTs) on a newly developed silica catalyst, we performed this combined experimental and theoretical study. In situ transmission electron microscopy (TEM) observations revealed that the active catalyst for the SWCNT growth is solid and amorphous SiO(x) nanoparticles (NPs), suggesting a vapor-solid-solid growth mechanism. From in situ TEM and chemical vapor deposition growth experiments, we found that oxygen plays a crucial role in SWCNT growth in addition to the well-known catalyst size effect. Density functional theory calculations showed that oxygen atoms can enhance the capture of-CH(x) and consequently facilitate the growth of SWCNTs on oxygen-containing SiO(x) NPs.
部门归属	[liu, bilu; tang, dai-ming; liu, chang; ren, wencai; li, feng; yu, wan-jing; yin, li-chang; zhang, lili; jiang, chuanbin; cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [sun, chenghua] univ queensland, australian inst bioengn & nanotechnol, ctr computat mol sci, brisbane, qld 4072, australia. [sun, chenghua] univ queensland, sch engn, arc ctr excellence funct nanomat, brisbane, qld 4072, australia.;ren, wc (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;wcren@imr.ac.cn cheng@imr.ac.cn
关键词	Nanoparticles Graphitization
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30505
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	B. L. Liu,D. M. Tang,C. H. Sun,et al. Importance of Oxygen in the Metal-Free Catalytic Growth of Single-Walled Carbon Nanotubes from SiO(x) by a Vapor-Solid-Solid Mechanism[J]. Journal of the American Chemical Society,2011,133(2):197-199.
APA	B. L. Liu.,D. M. Tang.,C. H. Sun.,C. Liu.,W. C. Ren.,...&H. M. Cheng.(2011).Importance of Oxygen in the Metal-Free Catalytic Growth of Single-Walled Carbon Nanotubes from SiO(x) by a Vapor-Solid-Solid Mechanism.Journal of the American Chemical Society,133(2),197-199.
MLA	B. L. Liu,et al."Importance of Oxygen in the Metal-Free Catalytic Growth of Single-Walled Carbon Nanotubes from SiO(x) by a Vapor-Solid-Solid Mechanism".Journal of the American Chemical Society 133.2(2011):197-199.