▎ 摘　　要

NOVELTY - Producing prussian blue/reduced graphene oxide foam composite, comprises (a) adding iron(II) sulfate to graphene oxide suspension, and hydrolyzing to prepare alpha -hydrogoethite/graphene oxide solution, (b) adding potassium ferricyanide to the solution to form prussian blue potassium ferricyanide nanoparticles, and (c) hydrothermally reacting. USE - The method is useful for producing prussian blue/reduced graphene oxide foam composite as adsorbent for removing radioactive cesium-137 (claimed) from polluted water. ADVANTAGE - The method is simple. The composite has high adsorption capacity.