Removal of Diethylstilbestrol in Environmental Water by Dispersive Solid-phase Extraction Using Graphene/Fe3O4 Magnetic Nanocomposite as Adsorbent[J]. 2012,31(10):1223-1228.
Removal of Diethylstilbestrol in Environmental Water by Dispersive Solid-phase Extraction Using Graphene/Fe3O4 Magnetic Nanocomposite as Adsorbent[J]. 2012,31(10):1223-1228.DOI:
A graphene/Fe3O4 magnetic nanocomposite(G/Fe3O4) was synthesized and used as an adsorbent for the dispersive solid phase extraction of diethylstilbestrol(DES) in environmental water.The chemical structure of graphene/Fe3O4 magnetic nanocomposite was investigated by FT-IR and X-ray diffraction spectra.The effects of pH value,adsorption time and salt on the adsorption of DES were examined.Results showed that the best pH value is 7.0,the balance adsorption time is 20 min,and the obtained highest adsorption efficiency is 88.2%.Absolute ethyl alcohol was effective in eluting DES on the G/Fe3O4 and could realize the recycling of adsorbent.The adsorption behavior followed Langmuir adsorption isotherm with a maximum adsorption capacity of 79.6 mg/g and a Langmuir adsorption equilibrium constant of 5.39 mL/μg.
关键词
石墨烯/Fe3O4磁性纳米材料合成己烯雌酚吸附洗脱
Keywords
graphene/Fe3O4 magnetic nanocompositesynthesisdiethylstilbestroladsorptionelution