Figure 4

(a) Field cooling (FC) and zero field cooling (ZFC) curves of FeKIT-5-5, FeKIT-5-7 and FeKIT-5-10. (b) The photographs of the R1FeKIT-5-5 with Hg2+ ion in water before and after the external magnetic force.

(a) Field cooling (FC) and zero field cooling (ZFC) curves of FeKIT-5-5, FeKIT-5-7 and FeKIT-5-10. (b) The photographs of the R1FeKIT-5-5 with Hg2+ ion in water before and after the external magnetic force.