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Issue 81, 2015
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Graphene-decorated porous ceramics for efficient removal of Cr(vi)

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Abstract

Porous ceramics (such as activated alumina (AA)) is a common adsorbent material in water purification. Its purifying capacity can be greatly improved through modification of porous ceramics. In this paper, a facile method has been established to prepare a graphene-decorated porous ceramic (GDPC) material. Citric acid (CA) was absorbed into the inner surface of the porous ceramics and transformed to graphene via sintering. The as-prepared material showed excellent adsorption capacity for chromium (Cr(VI)) over a wide range of pH (2 to 10) compared with the blank sample. The maximum uptake capacity for Cr(VI) exceed 699.43 mg gāˆ’1. UV and ICP-OES tests indicated that chromium ions in aqueous solution were completely removed via the GDPC. Thus the GDPC could be a potential adsorbent for the environmental cleanup, especially for the chromium-contained wastewater disposal.

Graphical abstract: Graphene-decorated porous ceramics for efficient removal of Cr(vi)

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Supplementary files

Article information


Submitted
23 May 2015
Accepted
24 Jul 2015
First published
24 Jul 2015

RSC Adv., 2015,5, 65982-65990
Article type
Paper
Author version available

Graphene-decorated porous ceramics for efficient removal of Cr(VI)

S. Wang, W. Yang and G. Chen, RSC Adv., 2015, 5, 65982
DOI: 10.1039/C5RA09684G

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