Adsorption of Eu(Ⅲ) Onto Composite Material of Multiwall Carbon Nanotubes-β-Cyclodextrin

β-cyclodextrin (β-CD) was grafted on multiwall carbon nanotubes (MWCNT) by using plasma techniques. The new material of MWCNT-β-CD composites can adsorb radionuclides quickly. Effects of pH, contact time and ionic strength on the adsorption of Eu(Ⅲ) to MWCNT-β-CD composites were investigated. The results indicate that the sorption of Eu(Ⅲ) from aqueous solution is fast and more than 95% Eu(Ⅲ) is adsorbed to MWCNTβCD composites. The adsorption capacity of MWCNT-β-CD composites is about 80 mg/g for Eu(Ⅲ) calculated from the adsorption isotherms. Other ions and their concentrations have no obvious effect on adsorption of Eu(Ⅲ) onto composite material of MWCNT-β-CD.