Amino and thiol modified magnetic multi-walled carbon nanotubes for the simultaneous removal of lead, zinc, and phenol from aqueous solutions

- The synthetic method of N2H4-SH-Fe3O4/o-MWCNTs was explored.
- Amino and thiol groups were grafted on the surface of Fe3O4/o-MWCNTs.
- The maximum adsorption capacity of N2H4-SH-Fe3O4/o-MWCNTs for lead was 199.6 mg/g.
- The adsorption kinetics can be best described by pseudo-second order kinetics.