Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 298, Issue -, Pages 28-35Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2015.05.011
Keywords
Graphene; Arsenic; Arsenate; Adsorption; Removal
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Funding
- NSFC [21177023]
- Science Foundation of Fujian Province of China [2013J101044]
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3D graphene macroscopic gel synthesized via self-assembly of GO nanosheets under basic conditions at low temperature is modified with polydopamine and Fe3O4 nanoparticles. The modification of polydopamine can not only strengthen the 3D graphene-based macroscopic architecture but also enhance the loadage and binding ability of Fe3O4 nanoparticles. The synthesized 3D Fe3O4-graphene macroscopic composites are characterized by SEM, XRD, XPS, BET, Raman and magnetic property and used as a versatile adsorbent for sub-ppm concentration of As(III) and As(V) removal from aqueous solutions. The experimental results suggest that the synthesized 3D Fe3O4-graphene macroscopic composites are promising for treating low concentration of arsenic contaminated water. (C) 2015 Elsevier B.V. All rights reserved.
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