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Novel mesoporous amorphous B-N-O-H nanofoam as electrode for capacitive dye removal from water

Abstract

Novel mesoporous B-N-O-H nanofoam was prepared using CuB23 and ammonium chloride precursors under O2 in ionic liquids via a solution plasma technique. It had a large high specific surface area of 1023 m2 g−1, and exhibited high electrical conductivity of 20.8 Sm−1and good specific capacity of 184 Fg−1 in 600 mgL-1 methylene blue aqueous solution at a current density of 0.2 mAcm-2. Furthermore, the nanofoam exhibited a high adsorption capacity for cationic dyes, especially methylene blue, with well-controlled recycling behavior. Meanwhile, the methylene blue / acid orange 7 mixture could be easily separated for reuse by the strong electrostatic interaction. The good separation of methylene blue / Rhodamine B, was attributed to the stronger coordination between methylene blue and the B-N-O-H nanofoams in comparison with that of Rhodamine B, and the advantage of the smaller methylene blue in competitive adsorption at higher flow rate. These results indicate that the present B-N-O-H nanofoam may have promising applications in the field of water purification, including enrichment or even total separation of dyes during the wastewater treatment for reuse.

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Supplementary files

Publication details

The article was received on 06 Jun 2017, accepted on 11 Sep 2017 and first published on 11 Sep 2017


Article type: Paper
DOI: 10.1039/C7TA04927G
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    Novel mesoporous amorphous B-N-O-H nanofoam as electrode for capacitive dye removal from water

    M. M. Chen, D. Wei, W. Chu, L. P. Hou and D. G. Tong, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA04927G

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