Growth modes of single-walled carbon nanotubes on catalysts
|Corresponding Author||Wang，Rongming; Li，Yan|
Understanding the growth mechanism of single-walled carbon nanotubes (SWCNTs) and achieving selective growth requires insights into the catalyst structure-function relationship. Using an in situ aberration-corrected environmental transmission electron microscope, we reveal the effects of the state and structure of catalysts on the growth modes of SWCNTs. SWCNTs grown from molten catalysts via a vapor-liquid-solid process generally present similar diameters to those of the catalysts, indicating a size correlation between nanotubes and catalysts. However, SWCNTs grown from solid catalysts via a vapor-solid-solid process always have smaller diameters than the catalysts, namely, an independent relationship between their sizes. The diameter distribution of SWCNTs grown from crystalline Co7W6, which has a unique atomic arrangement, is discrete. In contrast, nanotubes obtained from crystalline Co are randomly dispersed. The different growth modes are linked to the distinct chiral selectivity of SWCNTs grown on intermetallic and monometallic catalysts. These findings will enable rational design of catalysts for chirality-controlled SWCNTs growth.
NI Journal Papers
Cited Times [WOS]:6
|Document Type||Journal Article|
|Department||Department of Chemistry|
1.Beijing National Laboratory for Molecular Science,Key Laboratory for the Physics and Chemistry of Nanodevices,State Key Laboratory of Rare Earth Materials Chemistry and Applications,College of Chemistry and Molecular Engineering,Peking University,100871,China
2.Department of Chemistry,Guangdong Provincial Key Laboratory of Catalysis,Southern University of Science and Technology,Shenzhen,518055,China
3.Beijing Advanced Innovation Center for Materials Genome Engineering,Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science,University of Science and Technology of Beijing,100083,China
4.Institute of Physics,Chinese Academy of Sciences,100190,China
|First Author Affilication||Department of Chemistry|
Yang，Feng,Zhao，Haofei,Li，Ruoming,et al. Growth modes of single-walled carbon nanotubes on catalysts[J]. Science advances,2022,8(41):eabq0794.
Yang，Feng.,Zhao，Haofei.,Li，Ruoming.,Liu，Qidong.,Zhang，Xinrui.,...&Li，Yan.(2022).Growth modes of single-walled carbon nanotubes on catalysts.Science advances,8(41),eabq0794.
Yang，Feng,et al."Growth modes of single-walled carbon nanotubes on catalysts".Science advances 8.41(2022):eabq0794.
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