期刊
ACS APPLIED MATERIALS & INTERFACES
卷 5, 期 6, 页码 1907-1912出版社
AMER CHEMICAL SOC
DOI: 10.1021/am400155b
关键词
dendrimer; dendron; PAMAM; hollow fiber membrane; nanocrystal; heavy metal ion
资金
- Science and Technology of Shanghai Municipality [11DZ2260300]
- Talent Program of East China Normal University [77202201]
- National Natural Science Foundation of China [21025626]
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 Cu2+, Pb2+, and Cd2+ ions. Generation 3 (G3) PAMAM dendronized HFM (G3-HFM) retained 72% of its Cu2+ binding capacity after five cycles of use and recovery. Interestingly, Cu-2(OH)(3)Cl, Pb-3(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.
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