Uptake of Pb(II) and Cd(II) on Chitosan Microsphere Surface Successively Grafted by Methyl Acrylate and Diethylenetriamine

摘要: A novel adsorbent, CS-MA-DETA microspheres, for uptake of heavy metal ions from aqueous solutions was first fabricated via two-step grafting methyl acrylate (MA) and diethylenetriamine (DETA) onto chitosan (CS) microsphere surface in the absence cross-linkers. microspheres 3.04 μm mean diameter were uniformly wrinkle-like topography sketched out by SEM, whose after decoration MA DETA stable beneficial to ion capture. Its chemical composition, microstructure, thermal property characterized elemental analysis, FTIR, XRD, BET, TGA techniques, achieved quantitative results mainly included C/N ratio (4.76), crystallinity (31.20%, 19.75% CS), specific area (27.806 m2 g–1), pore (3.452 nm), mass loss at stage (3%, around 10% which indicated a successful synthesis, well-defined structure, good thermostability. Adsorption tests performed Pb(II) and/or Cd(II) s...