Preparation and Characterization of Aligned Iron Oxide Carbon Nanotube Thin Film

Abstract

Thin lms of acid-functionalized multiwall carbon nanotubes (O-MWCNT) with dierent concentrations and coated O-MWCNT with Fe3O4 nanoparticles (MWCNT/Fe3O4) were prepared on glass substrate at 300 • C by spray pyrolysis technique.In order to study the eect of nanotubes alignment on the physical properties of carbon nanotube lms, thin lm of iron oxide nanoparticles coated carbon nanotubes was deposited under magnetic eld of 0.4 T. All samples were characterized using UVVis spectroscopy, X-ray diraction, scanning electron microscopy, and the Hall eect experiment.Results show that the electrical conductivity and optical transmittance of carbon nanotubes thin lms depend on the concentration of carbon nanotubes and their arrangement at the lms.Aligning carbon nanotubes in thin lms leads to an obvious improvement in electrical and optical properties of thin lms.