title: Magnetic removal of dyes from aqueous solution using multi-walled carbon nanotubes filled with Fe2O3 particles.
abstract: The Fe2O3 nanoparticles have been introduced into the multi-walled carbon nanotubes (MWCNTs) via wet chemical method. The resulting products are characterized by TEM, EDX, XRD and VSM. The magnetic MWCNTs have been employed as adsorbent for the magnetic separation of dye contaminants from water. The adsorption test of dyes (Methylene Blue and Neutral Red) demonstrates that it only takes 60min to attain equilibrium and the adsorption capacities for Methylene Blue and Neutral Red in the concentration range studied are 42.3 and 77.5mg/g, respectively. The magnetic MWCNTs can be easily manipulated in magnetic field for desired separation, leading to the removal of dyes from polluted water. The integration of MWCNTs with Fe2O3 nanoparticles has great potential application to remove organic dyes from polluted water.
authors.affiliation: Department of Chemistry and Institutes of Biomedical Sciences, Fudan University, Shanghai 200433, PR China.
authors.forename: Song
authors.initials: S
authors.lastname: Qu
authors.forename: Fei
authors.initials: F
authors.lastname: Huang
authors.forename: Shaoning
authors.initials: S
authors.lastname: Yu
authors.forename: Gang
authors.initials: G
authors.lastname: Chen
authors.forename: Jilie
authors.initials: J
authors.lastname: Kong
mesh_terms: D000327:Adsorption; D004396:Coloring Agents / Q000302:isolation & purification*; D005296:Ferrous Compounds / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008280:Magnetics; D008751:Methylene Blue; D046529:Microscopy, Electron, Transmission; D043942:Nanotubes / Q000737:chemistry*; D009499:Neutral Red; D010316:Particle Size; D012996:Solutions; D013816:Thermodynamics; D014961:X-Ray Diffraction
chemical_list: D004396:Coloring Agents; D005296:Ferrous Compounds; D012996:Solutions; D009499:Neutral Red; C034236:ferrous oxide; D008751:Methylene Blue