▎ 摘　　要

NOVELTY - Carbon based loaded absorbent comprises aminated graphene oxide carrier, where the carrier is loaded with titanium dioxide and iron oxide. USE - The adsorbent is useful for removing heavy metals from wastewater (claimed). ADVANTAGE - The adsorbent reduces load of organic matter in water purification and is feasible after recovering. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing the absorbent, comprising (i) adding 1 pts. wt. graphene oxide into 1-2 pts. wt. dimethylformamide, ultrasonicating for 1-3 hours to obtain a suspension of graphene oxide, adding 150-180 pts. wt. amination reagent, 25-30 pts. wt. dimethyl cyclohexyl carbon imide (DCC), ultrasonicating for 5-10 minutes, reacting at 50-70 degrees C for 48-52 hours, adding anhydrous ethanol, where the mass ratio of ethanol and graphene oxide is 12-45:1, allowing to stand overnight, removing the upper layer of clear liquid, filtering the lower layer precipitate with polytetrafluoroethylene membrane, washing with anhydrous ethanol and deionized water and drying at 60 degrees C to obtain aminated graphene oxide (graphene oxide-triethylene tetramine or graphene oxide- ethylenediamine) (GOs-TETA or GOs-EDA), (ii) sonicating aminated graphene oxide, anhydrous ethanol and water for 60-90 minutes to obtain homogeneous suspension, adding titanate and continuing ultrasonicating for 30-120 minutes to obtain suspension of aminated graphene oxide containing titanium oxide, where the mass ratio of aminated graphene oxide, anhydrous ethanol, water and titanate is 1:250-500:20-300:5-20, (iii) taking aminated graphene oxide, iron-containing reagent, sodium acetate and sodium acrylate, dispersing in an organic solvent and ultrasonicating for 30-90 minutes to obtain suspension of aminated graphene oxide containing iron oxide, where the mass ratio of aminated graphene oxide, iron-containing reagent, sodium acetate, sodium acrylate and organic solvent is 1:5-20:1-3:1-3:200-800, and (iv) mixing suspension of aminated graphene oxide containing titanium oxide and suspension of aminated graphene oxide containing iron oxide in the mass ratio 1:1-10, loading into polytetrafluoroethylene lined stainless steel autoclave, reacting at 150-200 degrees C for 8-15 hours, cooling to room temperature, washing with deionized water and anhydrous alcohol, filtering, washing the dark brown carbon based adsorbent on the filter paper with distillation water, centrifuging and vacuum drying to obtain product; and (2) use of the adsorbent for removing heavy metals from wastewater, comprising adding the adsorbent mentioned above into the organic wastewater containing heavy metals, adsorbing and stirring for 10-360 minutes to adsorb and degrade organic pollutants.