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Kim, Kwang S.
Center for Superfunctional Materials (CSM)
Research Interests
  • Theoretical/experimental nanosciences, molecular electronics spectroscopy, energy materials

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Reduced graphene oxide-based hydrogels for the efficient capture of dye pollutants from aqueous solutions

Cited 36 times inthomson ciCited 23 times inthomson ci
Title
Reduced graphene oxide-based hydrogels for the efficient capture of dye pollutants from aqueous solutions
Author
Tiwari, Jitendra N.Mahesh, KandulaLe, Nhien H.Kemp, K. ChristianTimilsina, RupakTiwari, Rajanish N.Kim, Kwang S.
Keywords
Control experiments; Distilled water; Graphene nanosheets; Graphene oxides; Large surface area; Porous networks; Reduced graphene oxides (RGO); Sodium ascorbate
Issue Date
2013-05
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
CARBON, v.56, no., pp.173 - 182
Abstract
Three dimensional (3D) reduced graphene oxide (RGO)-based hydrogels were synthesized by the reduction of graphene oxide using sodium ascorbate. During gelation, mono-, bi-, and trilayer graphene nanosheets self-assemble into a well-defined and interconnected 3D porous network through strong van der Waals and pi-pi interactions. The 3D RGO-based hydrogels showed a large surface area, and a uniform pore size distribution. The application of the 3D mesoporous material as an adsorbent for the removal of the organic dyes, methylene blue (MB) and rhodamine B (RhB), from aqueous solutions was investigated. The 3D RGO-based hydrogels showed excellent removal capabilities for MB (similar to 100%) and RhB (similar to 97%) due to adsorption through strong pi-pi stacking and anion-cation interactions. Toxicity tests show that the aqueous solutions purified by 3D RGO-based hydrogels are comparable to control experiments conducted using distilled water.
URI
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DOI
10.1016/j.carbon.2013.01.001
ISSN
0008-6223
Appears in Collections:
PHY_Journal Papers
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