Fig. 5
Scheme of GOx-microbot-based approach for lead decontamination and recovery. a Decontamination of polluted water using GOx-microbots fabricated by electrodeposition of nanolayers of graphene oxide (GOx), Pt/Ni layer, Ni magnetic layer, and Pt catalytic inner layer. The decontamination strategy for lead ions can be carried out by two different techniques: self-propulsion of the GOx-microbots in the presence of H2O2 or by using an external rotating magnetic field. b Recovery of lead ions from the GOx-microbots in the presence of acidic media [117]