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Lanthanide-based functional misfit-layered nanotubes.

Leela S Panchakarla1, Ronit Popovitz-Biro, Lothar Houben

  • 1Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, 76100 (Israel) http://www.weizmann.ac.il/materials/tenne/

Angewandte Chemie (International Ed. in English)
|June 6, 2014
PubMed
Summary
This summary is machine-generated.

Researchers synthesized complex nanotubes from misfit layered compounds using a simple chemical method. A stress-inducement mechanism explains their formation, enabling potential applications in thermoelectrics and catalysis.

Keywords:
chalcogenideslanthanidesmisfit-layered compoundsnanotubes

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Solid State Chemistry

Background:

  • Misfit layered compounds (MLCs) exhibit unique layered structures, even when constituent subsystems are not inherently layered or stable.
  • These compounds, with the general formula [(MX)(1+x)](m)[TX2]n, offer potential for novel nanomaterial synthesis.
  • Lanthanide-based MLCs are particularly interesting precursors for nanotube formation.

Purpose of the Study:

  • To synthesize complex nanotubes from lanthanide-based misfit layered compounds.
  • To investigate the formation mechanism and driving forces of these nanotubes.
  • To explore potential applications of the synthesized nanotubular materials.

Main Methods:

  • A simple chemical synthesis method was employed.
  • Systematic temperature and time-dependent studies were conducted to analyze formation dynamics.
  • Characterization of quaternary nanotubular structures with partial elemental substitution was performed.

Main Results:

  • Successful synthesis of complex nanotubes from lanthanide-based misfit layered compounds.
  • Confirmation of quaternary nanotubular structures through partial substitution of lanthanide atoms.
  • Proposal of a stress-inducement mechanism to explain nanotube formation.

Conclusions:

  • A facile chemical route enables the synthesis of novel nanotubes from misfit layered compounds.
  • The formation mechanism is attributed to a stress-inducement process.
  • These nanotubes hold promise for applications in thermoelectrics, light emission, and catalysis, and for studying low-dimensional physics.