The preparation of novel adsorbent materials with efficient adsorption performance for both chromium and methylene blue

- ILs-OH modified magnetic chitosan/graphene oxide to form composite adsorbent (MG-ILs-OH) through simple methods.
- MG-ILs-OH could effective adsorption of not only methylene blue but also efficiently adsorption of chromium in batch systems.
- MG-ILs-OH has high adsorption because of its large number of adsorption sites (hydroxy and amino groups).
- The MG-ILs-OH could be repeatedly used by simple treatment without obvious structure and performance degradation.