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Figure 1

From: Ionic liquids modified graphene oxide composites: a high efficient adsorbent for phthalates from aqueous solution

Figure 1

Schematic diagram of the preparation of GO-IL SPE column.

Graphene oxide were reacted with [AEMIM][Br] to synthesize the GO-[AEMIM][Br] composite. And GO and GO-[AEMIM][Br] were packed into a syringe filter (0.45 μm, hydrophobic polytetrafluoroethylene membrane) respectively. In contrast to GO-ILs columns, GO column is easily broken during perfusion which is attributed to the high column pressure.

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