OICC Press International Nano Letters 2228-5326 4 4 (December 2014) 2014 10 09 Study in synthesis and characterization of carbon nanotubes decorated by magnetic iron oxide nanoparticles 10.1007/s40089-014-0128-1 EN Hamidreza Sadegh Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, IR Ramin Shahryari-ghoshekandi Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, IR Maryam Kazemi Department of Chemistry, Payame Noor University, Zanjan, IR Journal Article 2014 10 09 Abstract Magnetic nanoparticles iron oxide with average sizes of 6 nm were synthesized by a chemical coprecipitation method from mixtures of FeCl 2 ·4H 2 O and FeCl 3 ·6H 2 O. For preparation, multi-walled carbon nanotubes (MWCNTS) with outer diameter of 50 nm, wall thickness from 1 to 2 nm and length from 500–2,000 nm were used. Characterization of the MWCNT–Fe 3 O 4 by X-ray powder diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscope (SEM), transmission electron microscope (TEM), thermo-gravimetric analysis (TGA) and magnetic characterization was conducted on a vibrating sample magnetometer (VSM).