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

Jitendra N. Tiwari; Kandula Mahesh; Nhien H. Le; K. Christian Kemp; Rupak Timilsina; Rajanish N. Tiwari; Kwang S. Kim

doi:10.1016/j.carbon.2013.01.001

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

Jitendra N. Tiwari
, Kandula Mahesh
, Nhien H. Le
, K. Christian Kemp
, Rupak Timilsina
, Rajanish N. Tiwari
, Kwang S. Kim

Department of Energy and Materials Engineering

Research output: Contribution to journal › Article › peer-review

444 Scopus citations

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 π-π 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 (∼100%) and RhB (∼97%) due to adsorption through strong π-π 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.

Original language	English
Pages (from-to)	173-182
Number of pages	10
Journal	Carbon
Volume	56
DOIs	https://doi.org/10.1016/j.carbon.2013.01.001
State	Published - May 2013

Access to Document

10.1016/j.carbon.2013.01.001

Cite this

@article{a1007535a85347ed9bc9553cb3a650ea,

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

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 π-π 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 (∼100\%) and RhB (∼97\%) due to adsorption through strong π-π 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.",

author = "Tiwari, \{Jitendra N.\} and Kandula Mahesh and Le, \{Nhien H.\} and Kemp, \{K. Christian\} and Rupak Timilsina and Tiwari, \{Rajanish N.\} and Kim, \{Kwang S.\}",

year = "2013",

month = may,

doi = "10.1016/j.carbon.2013.01.001",

language = "English",

volume = "56",

pages = "173--182",

journal = "Carbon",

issn = "0008-6223",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Reduced graphene oxide-based hydrogels for the efficient capture of dye pollutants from aqueous solutions

AU - Tiwari, Jitendra N.

AU - Mahesh, Kandula

AU - Le, Nhien H.

AU - Kemp, K. Christian

AU - Timilsina, Rupak

AU - Tiwari, Rajanish N.

AU - Kim, Kwang S.

PY - 2013/5

Y1 - 2013/5

N2 - 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 π-π 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 (∼100%) and RhB (∼97%) due to adsorption through strong π-π 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.

AB - 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 π-π 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 (∼100%) and RhB (∼97%) due to adsorption through strong π-π 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.

UR - https://www.scopus.com/pages/publications/84875215429

U2 - 10.1016/j.carbon.2013.01.001

DO - 10.1016/j.carbon.2013.01.001

M3 - Article

AN - SCOPUS:84875215429

SN - 0008-6223

VL - 56

SP - 173

EP - 182

JO - Carbon

JF - Carbon

ER -

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

Abstract

Access to Document

Other files and links

Fingerprint

Cite this