Functionalized graphene sheets with poly(ionic liquid)s and high adsorption capacity of anionic dyes

- We functionalized the graphene sheets with poly(ionic liquid) (r-GO-PIL).
- The r-GO-PIL exhibited a capability of 1910 mg·g−1 for methyl blue from water solution.
- The facile regeneration by centrifugal separation was available for the r-GO-PIL.