▎ 摘　　要

NOVELTY - Environment function material based on graphene coated metal comprises core-shell structure powder with metal nanoparticles as core and graphene as shell, and amino group is modified on the surface of the graphene shell layer. USE - The function material is useful: as adsorbent to remove heavy metal ions and nuclide ion pollutants in water; as catalyst for catalytic reduction of aromatic organic pollutants in water, and detection of trace heavy metal ions and nuclide ions in water. ADVANTAGE - The function material: has improved material's ability to complex with heavy metal ions, radionuclide ions and other pollutants in water; ensures high sensitivity, high selectivity and rapid detection of trace heavy metal ions and radionuclide ions; adsorbs and removes high concentration of heavy metal ions and radionuclide ions; and achieves efficient catalytic reduction of aromatic organic pollutants. The method: has simple process, and easy to operate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing an environmentally functional material comprising (i) making graphite cathode and graphite anode, and setting one end of the graphite anode with hole for accommodating powder material, (ii) mixing plasmonic metal powder, graphite powder and graphite binder with each other, or mixing plasmonic metal powder, graphite powder and magnetic material powder with graphite binder to obtain composite powder material, (iii) filling the holes of the graphite anode with the composite powder material to obtain composite anode, (iv) assembling the graphite cathode and the composite anode in an arc discharge device, introducing mixed gas of ammonia and an inert gas or mixed gas of hydrogen, nitrogen, and an inert gas into the reaction chamber, and (v) controlling the arc discharge device to perform arc discharge between the graphite cathode and the composite anode, and collecting the powder material in the reaction chamber to obtain final product.