Abstract
We developed a novel three-dimensional (3D) graphene oxide foam/Fe3O4 nanocomposite (GOF/Fe3O4) and evaluated its adsorption performance for Cr(IV) removal. The 3D free-standing graphene foam was firstly synthesized on nickel foam and then oxidized and magnetically functionalized with Fe3O4 nanoparticles to form GOF/Fe3O4. The GOF/Fe3O4 exhibited a very large surface area of 574.2 m2/g, a high saturation magnetization of 40.2 emu/g, and a maximum absorption capacity of 258.6 mg/g for Cr(IV) removal, which significantly outperformed the reported 2D graphene-based adsorbents and other conventional adsorbents. The present work may offer a way to prepare a range of 3D magnetic graphene-based adsorbents for application in effective removal of heavy metal ions.
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Lei, Y., Chen, F., Luo, Y. et al. Three-dimensional magnetic graphene oxide foam/Fe3O4 nanocomposite as an efficient absorbent for Cr(VI) removal. J Mater Sci 49, 4236–4245 (2014). https://doi.org/10.1007/s10853-014-8118-2
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DOI: https://doi.org/10.1007/s10853-014-8118-2