Preparation of magnetic carbonized polyaniline nanotube and its adsorption behaviors of xanthene colorants in beverage and fish samples

摘要: Magnetic carbonized polyaniline nanotube composite (Fe3O4@c-PANI) was synthesized via a self-assemble approach for the extraction and determination of three xanthene colorants including erythrosine B (EB), phloxine (PB) rhodamine (RB). The scanning electron microscopy, transmission Fourier transform infrared spectrometry, X-ray photoelectron spectroscopy diffraction were adopted to confirm successful synthesis Fe3O4@c-PANI. When Fe3O4@c-PANI applied extracting colorants, satisfactory recoveries ranging from 89.48% 94.15% obtained with relative standard deviation value 1.09%-4.01%. Compared Fe3O4, c-PANI commercial adsorbents, achieved better retraction recovery colorants. Furthermore, adsorption kinetics isotherms studies analyzed prove mechanism anionic cationic on graphite layers pyrrole groups as-prepared can provide hydrophobic, π-π hydrogen bonding interaction Fe3O4 nanoparticles played dual-functional roles contributing separation adsorption. Coupled high performance liquid chromatography, established magnetic solid phase method used analysis beverage fish samples.