Growth Mechanism of Single-Walled Carbon Nanotubes on Iron–Copper Catalyst and Chirality Studies by Electron Diffraction
Source abstract
Abstract
Chiralities of single-walled carbon nanotubes grown on an atomic layer deposition prepared bimetallic FeCu/MgO catalyst were evaluated quantitatively using nanobeam electron diffraction. The results reveal that the growth yields nearly 90% semiconducting tubes, 45% of which are of the (6,5) type. The growth mechanisms as well as the roles of different components in the catalyst were studied in situ using environmental transmission electron microscopy and infrared spectroscopy. On the basis of the understanding of carbon nanotube growth mechanisms, an MgO-supported FeCu catalyst was prepared by impregnation, showing similar catalytic performance as the atomic layer deposition-prepared catalyst, yielding single-walled carbon nanotubes with a similar narrow chirality distribution.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Carbon Nanotubes in Composites · Graphene research and applications · Chemical and Physical Properties of Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Biotechnology and Chemical Technology, School of Chemical Technology, Aalto University, P.O. Box 16100, FI-00076 Aalto, Finland
NanoMaterials Group, Department of Applied Physics and Center for New Materials, School of Science, Aalto University, P.O. Box 15100, FI-00076 Aalto, Finland
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, P. R. China
A. M. Prokhorov General Physics Institute RAS, 38 Vavilov Street, 119991 Moscow, Russia
Center for Electron Nanoscopy, Technical University of Denmark, DK-2800 Kgs Lyngby, Denmark
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