The MnO2-loaded graphene sheets are configured as aerogels and exhibit a fast adsorption kinetic rate and superior adsorption capacity toward heavy metal ions, exceeding largely the corresponding pristine 3D graphene and δ-MnO2 nanosheets. The aerogels can be easily separated and do not generate secondary contaminants. Thanks to their high removal efficiency, fast adsorption kinetics, excellent regeneration and reusability and ease of separation operation, they are considered as ideal candidates for heavy metal ion decontamination in practical application.

CAS news release, May 16, 2016