An easy method to synthesize graphene oxide–FeOOH composites and their potential application in water purification

Graphene oxide (GO)–FeOOH composites were synthesized by an easy method for the efficient removal of arsenate from water. The as-synthesized composites showed excellent adsorption performance for arsenate. The experimental results of adsorption showed that the two-dimensional GO sheets are more advantageous than three-dimensional matrix materials as the supports of the adsorbents with fast adsorption rate and high adsorption capacity.

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► Mono-dispersed FeOOH nanocrystals anchored on the both sides of GO sheets.
► Excellent adsorption performance for removal arsenate from water.
► GO sheets play key roles in the formation of composite and excellent adsorption.