• heavy metals;
  • iron;
  • nanoparticles;
  • sorbents;
  • surface chemistry
Thumbnail image of graphical abstract

The cover picture shows a representation of the use surface-tailored superparamagnetic nanoparticles for the magnetically assisted removal of toxic analytes from contaminated waters. In their article on page 749, Marvin Warner and co-workers describe the synthesis of magnetic nanoparticles and the installation of a variety of heavy-metal chelating ligands onto their surface. A simple, one-step ligand exchange technique allows the incorporation of a ligand with specific affinity towards the toxic analyte of interest. These materials are promising functional heavy sorbents for a diverse set of remediation applications due to their high binding affinity toward a given analyte and their ability to be easily separated from a sample system through the application of a magnetic field.