CD-based Water Cleaning Technology in Nature

News 5 July, 2017
Recent Nature (546/7657, published on 8 June 2017) reported on the novel CD-based sorbents for the removal of perfluorooctanoic acid (PFOA) from water.
PFOA is used in large quantities in the polymer (e.g. Teflon®) production as surfactant. It is persistent in the environment, carcinogenic and mutagenic.
The original paper* published in J. Am. Chem. Soc. reports on high efficiency of the CD-based polymer (reducing the PFOA concentrations from 1 μg L-1 to <10 ng L-1) and on recyclability by washing with MeOH. The performance was not affected by humic acids.
*Xiao L, Ling Y, Alsbaiee A, Li C, Helbling DE, Dichtel WR (2017) β-Cyclodextrin polymer network sequesters perfluorooctanoic acid at environmentally relevant concentrations. J Am Chem Soc. 139(23):7689-7692. doi: 10.1021/jacs.7b02381.