For example, Prussian blue-decorated carbon sponge, used as a sorbent for targeting internalized
radiocesium and other radionuclides in human body, exhibits binding affinity and selectivity to radionuclide targets [4]. Magnetically-separable porous carbon, fabricated via in situ self-assembly of latex spheres and block copolymers with resins and Ni species, shows a high absorption capacity for organic dye, such as methylene blue [5].