Enrichment of metallic carbon nanotubes by electric field-assisted chemical vapor deposition
文献类型：期刊论文
| 作者 | Peng, Banghua1,2; Jiang, Shan1; Zhang, Yongyi1; Zhang, Jin1 |
| 刊名 | CARBON
 |
| 出版日期 | 2011-06-01 |
| 卷号 | 49期号:7页码:2555-2560 |
| ISSN号 | 0008-6223 |
| DOI | 10.1016/j.carbon.2011.02.045 |
| 英文摘要 | We report herein a rational approach to increase the proportion of metallic carbon nanotubes (CNTs) in horizontally aligned ultralong CNT arrays by electric field-assisted chemical vapor deposition. In a gas flow-directed growth mode, the buoyancy caused by temperature differences near the substrate can lift catalyst particles or CNTs from the substrate into the laminar flow so that ultralong CNT arrays with mixed metallic (m-) and semiconducting (s-) CNTs can be obtained. It was verified that the percentage of m-CNTs was about 47% for pristine CNTs. When an electric field was introduced during CNT growth, the grown CNTs were polarized and the generated electric field force assisted them into the laminar flow. The greater polarizability of m-CNTs compared to s-CNTs resulted in more m-CNTs lifted and an increased m- to s-CNT ratio in the array. Measurements of CNT electrical properties showed that the percentage of m-CNTs could reach 80% when the electric field intensity was set at 200 V/cm. (C) 2011 Elsevier Ltd. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000289663100044 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/72977]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhang, Jin |
| 作者单位 | 1.Peking Univ, Coll Chem & Mol Engn, State Key Lab Struct Chem Unstable & Stable Speci, Ctr Nanochem,BNLMS,Key Lab Phys & Chem Nanodevice, Beijing 100871, Peoples R China 2.Shihezi Univ, Sch Chem & Chem Engn, Xinjiang 832000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Peng, Banghua,Jiang, Shan,Zhang, Yongyi,et al. Enrichment of metallic carbon nanotubes by electric field-assisted chemical vapor deposition[J]. CARBON,2011,49(7):2555-2560. |
| APA | Peng, Banghua,Jiang, Shan,Zhang, Yongyi,&Zhang, Jin.(2011).Enrichment of metallic carbon nanotubes by electric field-assisted chemical vapor deposition.CARBON,49(7),2555-2560. |
| MLA | Peng, Banghua,et al."Enrichment of metallic carbon nanotubes by electric field-assisted chemical vapor deposition".CARBON 49.7(2011):2555-2560. |
入库方式： OAI收割
来源：化学研究所
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