Issue 81, 2015

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

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)

Supplementary files

Article information

Article type
Paper
Submitted
23 May 2015
Accepted
24 Jul 2015
First published
24 Jul 2015

RSC Adv., 2015,5, 65982-65990

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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