Plasma-Induced Grafting of Cyclodextrin onto Multiwall Carbon Nanotube/Iron Oxides for Adsorbent Application
Top Cited Papers
- 3 May 2010
- journal article
- research article
- Published by American Chemical Society (ACS) in The Journal of Physical Chemistry B
- Vol. 114 (20), 6779-6785
- https://doi.org/10.1021/jp911424k
Abstract
The magnetic composite of β-cyclodextrin grafted onto multiwalled carbon nanotubes/iron oxides (denoted as MWCNTs/iron oxides/CD) was synthesized using the plasma-induced grafting technique and was developed for the removal of inorganic and organic pollutants from aqueous solutions. The characteristic results of Fourier transform infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), powder X-ray diffraction (XRD), and thermogravimetric analysis (TGA) showed that β-CD was grafted onto the MWCNTs/iron oxides. The grafted β-CD on the MWCNTs/iron oxides contributed to an enhancement of the adsorption capacity because of the strong abilities of the multiple hydroxyl groups and the inner cores of the hydrophobic cavity in β-CD to form complexes with metal ions and organic pollutants. MWCNTs/iron oxides/CD can be separated and recovered from solution by magnetic separation. The adsorption of Pb(II) on MWCNTs/iron oxides/CD was found to be dependent on pH, and the adsorption of 1-naphthol was found to be independent of pH. The results show that the magnetic composite of MWCNTs/iron oxides/CD is a promising composite material for the preconcentration and separation of inorganic and organic pollutants from aqueous solutions in environmental pollution cleanup.Keywords
This publication has 42 references indexed in Scilit:
- Removal of Heavy Metals from Aqueous Solutions by Precipitation-Filtration Using Novel Organo-Phosphorus LigandsSeparation Science and Technology, 2008
- Influence of Surface Oxides on the Adsorption of Naphthalene onto Multiwalled Carbon NanotubesEnvironmental Science & Technology, 2008
- Estimation of Isotherm Parameters for Biosorption of Cd(II) and Pb(II) onto Brown Seaweed, Lobophora variegataJournal of Chemical & Engineering Data, 2008
- Natural Organic Matter Stabilizes Carbon Nanotubes in the Aqueous PhaseEnvironmental Science & Technology, 2006
- Lead Sorption onto Ferrihydrite. 2. Surface Complexation ModelingEnvironmental Science & Technology, 2003
- Activated carbon/iron oxide magnetic composites for the adsorption of contaminants in waterCarbon, 2002
- Carbon Nanotubes as Superior Sorbent for Dioxin RemovalJournal of the American Chemical Society, 2001
- An innovative method for removing Hg2+ and Pb2+ in ppm concentrations from aqueous mediaChemosphere, 1999
- LEAD REMOVAL AND RECOVERY FROM BATTERY WASTEWATERS BY NATURAL ZEOLITE CLINOPTILOLITESolvent Extraction and Ion Exchange, 1999
- Helical microtubules of graphitic carbonNature, 1991