Issue 37, 2013
From the journal:

Journal of Materials Chemistry A

Removal of toxic Cr(vi) by UV-active functionalized graphene oxide for water purification†

Diptiman Dinda,a   Abhisek Guptaa  and  Shyamal Kumar Saha*a  

* Corresponding authors

a Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
E-mail: cnssks@iacs.res.in

Abstract

Extraction of hazardous heavy metals like As, Hg, Cd, Cr(VI), etc. for water purification is a great challenge. Exploiting the large surface area of graphene, in the present work, we have synthesized a UV-active 2,6-diamino pyridine–reduced graphene oxide (DAP–RGO) composite to remove Cr(VI) from acidic water solution. Here, the presence of an extra pyridinic-nitrogen lone pair facilitates the removal efficiency of excess Cr(VI) [500 mg L−1 in 3 h only] over reported results so far. In addition to that, the unique advantage of this UV-active material is the enhancement of removal efficiency by 18% at a higher pH value. We believe that this study will bring forth a new class of UV-active graphene based adsorbents with remarkably high removal efficiency for toxic heavy metals from waste-water in future.

Graphical abstract: Removal of toxic Cr(vi) by UV-active functionalized graphene oxide for water purification

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Article information

DOI
https://doi.org/10.1039/C3TA12504A
Article type
Paper
Submitted
27 Jun 2013
Accepted
22 Jul 2013
First published
22 Jul 2013

J. Mater. Chem. A, 2013,1, 11221-11228

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Removal of toxic Cr(VI) by UV-active functionalized graphene oxide for water purification

D. Dinda, A. Gupta and S. K. Saha, J. Mater. Chem. A, 2013, 1, 11221 DOI: 10.1039/C3TA12504A

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