Novel magnetic Fe3O4@C nanoparticles as adsorbents for removal of organic dyes from aqueous solution

► In this work, novel magnetic Fe3O4@C nanoparticles have been synthesized and employed as high efficient adsorbent for removal cationic dyes from polluted water. ► While up to now, little study is done on adsorption of dyes by the Fe3O4@C nanoparticles. ► Hence, here we provide a simply and environment friendly method for removal of cationic dyes or other pollutants from water.