▎ 摘　　要

A new nanoadsorbent A/Fe3O4/GO (AFG) is developed for eliminating Cs+ from water by anchoring Fe3O4 nanoparticles onto graphene oxide (GO/Fe3O4) and in situ controllable growing nanocrystal of ammonium 12-molybdophosphate (A) on the surface of GO/Fe3O4 with a simple procedure at room temperature. AFG shows a high adsorption capacity for Cs+ (Q(max)=82.71mgg(-1)) and fast kinetics (>88.83% elimination efficiency within only 1min and reaches the end equilibrium in about 10min). It presents good selectivity for Cs+ in a wide pH range (2.0-10). Furthermore, it can be recovered from water with easily magnetic separation.