Preparation of polydopamine-coated graphene oxide/Fe₃O₄ imprinted nanoparticles for selective removal of fluoroquinolone antibiotics in water.

ABSTRACT: Antibiotics in water have recently caused increasing concerns for public health and ecological environments. In this work, we demonstrated polydopamine-coated graphene oxide/Fe₃O₄ (PDA@GO/Fe₃O₄) imprinted nanoparticles coupled with magnetic separation for fast and selective removal of fluoroquinolone antibiotics in water. The nanoparticles were prepared by the self-polymerization of dopamine using sarafloxacin as a template. The imprinted PDA film of 10~20 nm uniformly covered the surface of GO/Fe₃O₄ providing selective binding sites. The nanoparticles showed rapid binding and a large capacity (70.9 mg/g). The adsorption data fitted well the Langmuir and pseudo-second order kinetic equations. The nanoparticles could be easil

SUBMITTER: Tan F 

PROVIDER: S-EPMC5515973 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature