Polypyrrole modified magnetic reduced graphene oxide composites: synthesis, characterization and application for selective lead adsorption.

ABSTRACT: To enhance the ability to remove lead from water, polypyrrole modified magnetic Fe₃O₄/reduced graphene oxide composites (PPy-FG) were prepared via in situ polymerization and employed for the Pb(ii) adsorption. The physicochemical structure and adsorption mechanism of the prepared magnetic PPy-FG were studied via vibrating sample magnetometer, X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, Brunauer-Emmett-Teller analysis, and X-ray photoelectron spectroscopy. The effects of several factors on Pb(ii) adsorption were evaluated, including pH value, temperature, and competitive ions. Under the optimal conditions (pH 5 and 298 K), the maximum adsorption capacity of PPy-FG was 93.2 mg g^-1 giving an improveme

SUBMITTER: Liu Z 

PROVIDER: S-EPMC9053619 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature