Ultra-Clean Isotope Engineered Double-Walled Carbon Nanotubes as Tailored Hosts to Trace the Growth of Carbyne
- Author(s)
- Weili Cui, Ferenc Simon, Yifan Zhang, Lei Shi, Paola Ayala, Thomas Pichler
- Abstract
A unique scope of mechanical, optical, and electrical properties makes the 1-D allotrope of carbon, carbyne, one of the most promising materials for applications in various fields. Despite the important progress in the synthesis of carbyne confined to double-walled carbon nanotubes (DWCNTs), its formation and growth mechanisms remain elusive. Here, it is shown how a rational design of isotope-engineered ultra-clean DWCNTs with
13C-enriched inner walls—which act as precursors and as tailored hosts—can trace the growth mechanism of confined carbyne upon high-vacuum annealing at high temperatures. It is unambiguously proven that an exchange of C atoms between the inner and outer tubes takes place, and it is distinguished from the growth of confined carbyne. The latter only happens after the ultra-clean DWCNT hosts react by partial oxidation yielding encapsulated carbonaceous products, which are well-defined precursors for the carbyne synthesis with a record of ≈28.8%
13C enrichment. Tracing the synthesis of carbyne and disentangling it from concomitant high-temperature processes like healing, reorganization and regrowth of DWCNTs are a crucial step towards accessing the full application potential of confined carbyne hybrids by tailoring the isotopic fillers, as well as the inner and outer tubes of the DWCNT hosts.
- Organisation(s)
- Electronic Properties of Materials
- External organisation(s)
- Budapest University of Technology and Economics, National Sun Yat-sen University, Huzhou University
- Journal
- Advanced Functional Materials
- Volume
- 32
- No. of pages
- 7
- ISSN
- 1616-301X
- DOI
- https://doi.org/10.1002/adfm.202206491
- Publication date
- 2022
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103018 Materials physics
- Keywords
- ASJC Scopus subject areas
- Condensed Matter Physics, General Chemistry, General Materials Science
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/ffd35c0f-76c4-42f2-8d39-fd042d3ff617