Abstract
Disinfection byproducts such as trihalomethanes are commonly found in drinking water. Trihalomethanes are formed upon chlorination of natural organic matter found in many drinking water sources. Inspired by molecular CHCl3?cavitand host-guest complexes, we designed porous polymers composed of resorcinarene receptors. These materials show higher affinity for halomethanes than a specialty activated carbon used for trihalomethane removal. The cavitand polymers show similar removal kinetics as activated carbon and have high capacity (49 mg g-1 of CHCl3). These materials maintain their performance in drinking water and can be thermally regenerated. Cavitand polymers also outperform commercial resins for 1,4-dioxane adsorption, which contaminates many water sources. These materials show promise for water treatment and demonstrate the value of using supramolecular receptors to design adsorbents for water purification.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 13315-13319 |
| Number of pages | 5 |
| Journal | Journal of the American Chemical Society |
| Volume | 141 |
| Issue number | 34 |
| DOIs | |
| State | Published - Aug 28 2019 |
Funding
We thank Dr. Riqiang Fu for conducting 19 F MAS NMR experiments at the National High Magnetic Field Lab (NHMFL) supported by the NSF Cooperative agreement No. DMR-1644779 and the State of Florida. We also thank Ioannina Castano for useful discussions on electron microscopy characterization. L.P.S. is supported by the NSF Graduate Research Fellowship under grant DGE-1842165. A.Y. acknowledges support from the Camille and Henry Dreyfus Foundation Postdoctoral Program in Environmental Chemistry. This research made use of the EPIC facility of NUANCE and IMSERC at Northwestern University, which have received support from the NSF (CHE-1048773), Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF ECCS-1542205), the MRSEC program (NSF DMR-1720139) at the Materials Research Center, the Keck Foundation, the State of Illinois, and International Institute for Nanotechnology (IIN). We thank Dr. Riqiang Fu for conducting 19F MAS NMR experiments at the National High Magnetic Field Lab (NHMFL) supported by the NSF Cooperative agreement No. DMR-1644779 and the State of Florida. We also thank Ioannina Castano for useful discussions on electron microscopy characterization. L.P.S. is supported by the NSF Graduate Research Fellowship under grant DGE-1842165. A.Y. acknowledges support from the Camille and Henry Dreyfus Foundation Postdoctoral Program in Environmental Chemistry. This research made use of the EPIC facility of NUANCE and IMSERC at Northwestern University, which have received support from the NSF (CHE-1048773), Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF ECCS-1542205), the MRSEC program (NSF DMR-1720139) at the Materials Research Center, the Keck Foundation, the State of Illinois, and International Institute for Nanotechnology (IIN).
ASJC Scopus subject areas
- General Chemistry
- Biochemistry
- Catalysis
- Colloid and Surface Chemistry
