期刊
ACS APPLIED MATERIALS & INTERFACES
卷 10, 期 1, 页码 713-722出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b15242
关键词
homopolymer vesicle; water purification; PAHs; cationic dyes; heavy metal ions
资金
- Shanghai International Scientific Collaboration Fund [15230724500]
- NSFC [21374080, 21674081, 21611130175]
- Shanghai 1000 Talents Plan
- Fundamental Research Funds for the Central Universities [1500219107]
It is an important challenge to effectively remove environmental pollutants such as polycyclic aromatic hydrocarbons (PAHs), dyes, and heavy metal ions at a low cost. Herein, we present a multifunctional homopolymer vesicle self assembled from a scalable homopolymer, poly(amic acid) (PAA), at room temperature. The vesicle can efficiently eliminate PAHs, cationic dyes, and heavy metal ions from water based on pi-pi stacking, hydrophobic effect, and electrostatic interactions with the pollutants. The residual concentrations of PAHs, cationic dyes, and heavy metal ions (such as Ni2+ in water are lower than 0.60 and 0.30 parts per billion (ppb) and 0.095 parts per million (ppm), respectively, representing a promising adsorbent for water remediation. Furthermore, precious metal ions such as Ag can be recovered into silver nanoparticles by in situ reduction on the membrane of PAA vesicles to form a silver nanoparticle/vesicle composite (Ag@vesicle) that can effectively catalyze the reduction of toxic pollutants such as aromatic nitro-compounds and be recycled for more than ten times.
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