Ferric ion adsorption and electrodesorption by carbon nanotubes and nanofibres films.
Carbon nanotubes and nanofibres (CNTs-CNFs) films have been grown on Ni sheets by low pressure chemical vapor deposition system and show good physical adsorption capability for ferric (Fe(3 + )) ions. The studies of adsorption kinetics and isotherms indicate that Fe(3 + ) adsorption process was regarded as first-order model and followed a Langmuir isotherm indicating monolayer adsorption. The saturated CNTs-CNFs film is easy to be regenerated by electrodesorption with direct voltage applied. The result shows that the combination of adsorption and electrodesorption by CNTs-CNFs is a promising technology to remove the Fe(3 + ) contamination in solution, which can be further extended to the process of other heavy metal ions.
Li
Haibo
H
Department of Physics, Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, East China Normal University, Shanghai 200062, China.
Pan
Likun
L
Zhang
Yanping
Y
Sun
Zhuo
Z
D000327:Adsorption; D004563:Electrochemistry / Q000379:methods*; D007501:Iron / Q000737:chemistry*; D007700:Kinetics; D008855:Microscopy, Electron, Scanning; D008956:Models, Chemical; D037742:Nanotubes, Carbon / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
D037742:Nanotubes, Carbon; D014874:Water Pollutants, Chemical; D007501:Iron