Functional Ion-imprinting Carbon Materials Synthesis And Adsorption Of Metal Ions

Rare earth element is the world’s countries to develop high-tech and sophisticateddefense technology to transform traditional industries indispensable strategic materials. Withthe development of high-tech, of rare earth materials have become increasingly demanding, inorder to develop new high-performance optical, electrical, magnetic rare earth materials,require the preparation of a more pure rare earth materials, such as fiber optics, laser crystalmaterials not only for the high pure single rare earth products is extremely demanding, butalso for Cu, Fe, Al, Pb, Co, Ni and other non-rare earth impurities have a very high demand,often in the ppm-ppb range. Therefore, the study of the adsorption of non-rare earth materialsfrom rare earth materials is necessary.In this paper, the removal of the separation of rare earth elements in the major non-rareion Cu, Pb were to be on, the new adsorbent for the removal of non-rare-earth ions inrare-earth ions were successfully prepared, study includes two parts:The first part, we ues polyethyleneimine (PEI) as a functional polymer, Cu (II) and Pb (II)ion as a template, formaldehyde as the crosslinking agent, to prepare Cu (II) blots PEI, thenafter charring, prepared blots function Carbon Materials Cu (II)-CIIPEI-F. Using Fouriertransform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), static nitrogenadsorption instrument, such as carbon materials by means of imprinting function Cu (II)-CIIPEI-F were characterized and studied for ion binding properties of the template selectiverecognition. The results showed that the functional carbon material imprinted Cu (II)-CIIPEI-F for the Cu (II) ions can produce strong adsorption, the maximum adsorptioncapacity reached50.1mg· g-1, with respect to the La (III), Ce (III), Sc (III), for Cu (II)selectivity coefficients were reached15.8,27.1,2.79; imprinting function Carbon MaterialsPb (II)-CIIPEI-F for Pb (II) ions can produce strong adsorption, the largest adsorptionreached26.6mg· g-1, with respect to the La (III), Ce (III), Sc (III), of Pb (II) selectivitycoefficients were reached3.98,18.8,1.26.The second part, we use polyethyleneimine (PEI) as a functional polymer, Cu (II) and Pb(II) ion as a template, epichlorohydrin (ECH) as a crosslinking agent, prepared by Cu (II) blots PEI, and then through carbonization, the carbon material obtained imprinting functionCu (II)-CIIPEI-E. Using Fourier transform infrared spectroscopy (FT-IR), scanning electronmicroscopy (SEM), static nitrogen adsorption instrument, such as carbon materials by meansof imprinting function Cu (II)-CIIPEI-E were characterized and studied for ion bindingproperties of the template selective recognition. The results showed that the functional carbonmaterial imprinted Cu (II)-CIIPEI-E on the Cu (II) ions can produce strong adsorption, themaximum adsorption capacity reached8.28mg· g-1, with respect to the La (III), Ce (III), Sc(III), for Cu (II) selectivity coefficients were reached43.68,12.96,3.45; imprinting functionCarbon Materials Pb (II)-CIIPEI-E for Pb (II) ions can produce strong adsorption, the largestadsorption amount reaches83.0mg· g-1, with respect to the La (III), Ce (III),Sc (III) of Pb (II)selectivity coefficients were reached16.57,45.00,0.40.