Growth of Close-Packed Semiconducting Single-Walled Carbon Nanotube Arrays Using Oxygen-Deficient TiO2 Nanoparticles as Catalysts

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	Growth of Close-Packed Semiconducting Single-Walled Carbon Nanotube Arrays Using Oxygen-Deficient TiO2 Nanoparticles as Catalysts
	Kang, LX; Hu, Y; Liu, LL; Wu, JX; Zhang, SC; Zhao, QC; Ding, F; Li, QW（李清文); Zhang, J
刊名	NANO LETTERS
	2015
卷号	15 期号:1 页码:7
关键词	Semiconducting single-walled carbon nanotube arrays oxygen vacancy preferential growth titanium dioxide catalysts
通讯作者	Li, QW (李清文)
英文摘要	For the application of single-walled carbon nanotubes (SWNTs) in nanoelectronic devices, techniques to obtain horizontally aligned semiconducting SWNTs (s-SWNTs) with higher densities are still in their infancy. We reported herein a rational approach for the preferential growth of densely packed and well-aligned s-SWNTs arrays using oxygen-deficient TiO2 nanoparticles as catalysts. Using this approach, a suitable concentration of oxygen vacancies in TiO2 nanoparticles could form by optimizing the flow rate of hydrogen and carbon sources during the process of SWNT growth, and then horizontally aligned SWNTs with the density of similar to 10 tubes/mu m and the s-SWNT percentage above 95% were successfully obtained on ST-cut quartz substrates. Theoretical calculations indicated that TiO2 nanoparticles with a certain concentration of oxygen vacancies have a lower formation energy between s-SWNT than metallic SWNT (m-SWNT), thus realizing the preferential growth of s-SWNT arrays. Furthermore, this method can also be extended to other semiconductor oxide nanoparticles (i.e., ZnO, ZrO2 and Cr2O3) for the selective growth of s-SWNTs, showing clear potential to the future applications in nanoelectronics.
收录类别	SCI
语种	英语
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.sinano.ac.cn/handle/332007/3497]
专题	苏州纳米技术与纳米仿生研究所_先进材料研究部_李清文团队
推荐引用方式 GB/T 7714	Kang, LX,Hu, Y,Liu, LL,et al. Growth of Close-Packed Semiconducting Single-Walled Carbon Nanotube Arrays Using Oxygen-Deficient TiO2 Nanoparticles as Catalysts[J]. NANO LETTERS,2015,15(1):7.
APA	Kang, LX.,Hu, Y.,Liu, LL.,Wu, JX.,Zhang, SC.,...&Zhang, J.(2015).Growth of Close-Packed Semiconducting Single-Walled Carbon Nanotube Arrays Using Oxygen-Deficient TiO2 Nanoparticles as Catalysts.NANO LETTERS,15(1),7.
MLA	Kang, LX,et al."Growth of Close-Packed Semiconducting Single-Walled Carbon Nanotube Arrays Using Oxygen-Deficient TiO2 Nanoparticles as Catalysts".NANO LETTERS 15.1(2015):7.