title: Polyamidoamine dendronized hollow fiber membranes in the recovery of heavy metal ions.
abstract: Polyamidoamine (PAMAM) dendronized hollow fiber membranes (HFMs) were synthesized and used in the recovery of heavy metal ions. The dendronized HFMs showed strong binding ability with Cu(2+), Pb(2+), and Cd(2+) ions. Generation 3 (G3) PAMAM dendronized HFM (G3-HFM) retained 72% of its Cu(2+) binding capacity after five cycles of use and recovery. Interestingly, Cu2(OH)3Cl, Pb3(CO3)2(OH)2, and CdCO3 crystals were grown on G3-HFM surface when G3-HFMs were immersed in CuCl2, Pb(NO3)2, and CdCl2 solutions, respectively, while no crystal was observed with nonmodified HFMs. The results provide new insights into the applications of membrane-supported dendrimers in the recovery of heavy metal ions.
authors.affiliation: CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, People's Republic of China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Zhang
authors.forename: Na
authors.initials: N
authors.lastname: Wang
authors.forename: Libo
authors.initials: L
authors.lastname: Zhao
authors.forename: Tongwen
authors.initials: T
authors.lastname: Xu
authors.forename: Yiyun
authors.initials: Y
authors.lastname: Cheng
mesh_terms: D050091:Dendrimers / Q000737:chemistry; D008567:Membranes, Artificial; D019216:Metals, Heavy / Q000737:chemistry / Q000302:isolation & purification*; D053758:Nanoparticles / Q000737:chemistry*
chemical_list: D050091:Dendrimers; D008567:Membranes, Artificial; D019216:Metals, Heavy; C104700:PAMAM Starburst