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      Template-based synthesis of AlN hollow nanofibers via plasma-enhanced atomic layer deposition

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      Author(s)
      Ozgit-Akgun,Çağla
      Kayacı, Fatma
      Dönmez, İnci
      Uyar, Tamer
      Bıyıklı, Necmi
      Date
      2012
      Source Title
      Nanotechnology 2012: Advanced Materials, CNTs, Particles, Films and Composites
      Volume
      1
      Pages
      675 - 678
      Language
      English
      Type
      Conference Paper
      Item Usage Stats
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      41
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      Abstract
      Aluminum nitride (AlN) hollow nanofibers were synthesized by depositing conformai thin films via plasma-enhanced atomic layer deposition on sacrificial electrospun nylon 66 nanofiber templates having different average fiber diameters. Scanning electron microscopy studies have shown that there is a critical wall thickness-to-inner diameter ratio for these nanostructures to preserve their shapes after the polymeric template has been removed by calcination. Best morphologies were observed for AlN hollow nanofibers prepared by depositing 800 cycles on templates having ∼330 nm average fiber diameter. Al 2p high resolution XPS subpeaks located at 73.5 ± 0.2 eV confirmed the presence of AlN for coated and calcinated samples. Transmission electron microscopy (TEM) images indicated uniform wall thicknesses along the fiber axes. Synthesized AlN hollow nanofibers were polycrystalline with a hexagonal crystal structure as determined by high resolution TEM and selected area electron diffraction.
      Keywords
      Aluminum nitride
      Hollow nanofiber
      Templatebased synthesis
      Electrospinning
      Atomic layer deposition
      Permalink
      http://hdl.handle.net/11693/28170
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      • Institute of Materials Science and Nanotechnology (UNAM) 1930
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