Sorting Transition-Metal Dichalcogenide Nanotubes by Centrifugation.

ABSTRACT: Tungsten disulfide (WS₂) nanotubes are cylindrical, multiwall nanotubes with various diameters and wall numbers. They can exhibit various unique properties depending on their structures and thus preparing samples with uniform structures is important for understanding their basic properties and applications. However, most synthesis methods have difficulty to prepare uniform samples, and thus, a purification method to extract nanotubes with a selected diameter and wall number must be developed. Here, we demonstrate a solution-based purification of WS₂ nanotubes using a surfactant solution. Stable dispersions of nanotubes were prepared using nonionic surfactants, which enabled us to sort the diameters and wall numbers of the nanotubes through a centrifugation process. By

SUBMITTER: Yomogida Y 

PROVIDER: S-EPMC6645269 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature