Fabrication of novel magnetic nanocomposite with a number of adsorption sites for the removal of dye

- The IL-Fe3O4@CS@GO shows an overall fast and pH-independent dye adsorption.
- The IL can improve the dispersivity of adsorbent, and increased adsorption sites.
- The adsorption capacity increases with increasing the initial dye concentration and pH, and decreases with increasing the temperature.
- The IL-Fe3O4@CS@GO could be repeatedly used by simple treatment without obvious structure and performance degradation.
- Results suggest that IL-Fe3O4@CS@GO could be promising dye adsorbents.