Journal of Chromatography A
Journal of Chromatography A
5 years ago

Synthesis and evaluation of molecularly imprinted polymers with binary functional monomers for the selective removal of perfluorooctanesulfonic acid and perfluorooctanoic acid

This work describes a novel method for the synthesis of molecularly imprinted polymers (MIPs) using 2-(trifluoromethyl) acrylic acid (TFMAA) and 4-vinyl pyridine (4-Vpy) as binary functional monomers, perfluorooctanoic acid (PFOA) as template, and ethyleneglycol dimethacrylate (EGDMA) as cross-linker in the presence of azobisisobutyronitrile (AIBN). The binary functional monomer MIPs were applied to selective recognition for PFOA and perfluorooctanesulfonic acid (PFOS) from aqueous environment. The MIPs were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and microscopic electrophoresis. Thereafter, the adsorption capacity and selectivity of the synthesized MIPs for PFOA and PFOS were evaluated by batch adsorption experiments. The maximum adsorption capacities of the MIPs for PFOA and PFOS were 6.42 and 6.27mg/g, respectively. It was also found that the adsorption capacities remained constant with increasing the solution pH in the range of 2.0-5.0, and then decreased when the pH was further increased. Finally, the novel MIPs can be reused after five cycles of adsorption-desorption-adsorption with no significant decrease of removal rate and have an effective performance in selective removal of PFOA and PFOS in real lake water samples. All the results indicate that the binary functional monomer MIPs have great potential to remove PFOA and PFOS in aqueous environment.

Publisher URL: www.sciencedirect.com/science

DOI: S0021967317311846

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.