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Triple Layered Core-Shell ZVI@Carbon@Polyaniline Composites Enhanced Electron Utilization in Cr(VI) Reduction

Abstract

A three layered core-shell structured zero valent iron@carbon@polyaniline (ZVI@C@PANI) nanocomposite was synthesized and was used to reduce the Cr(VI) in the wastewater in this study. The synthesized ZVI@C@PANI was demonstrated to have a great Cr(VI) removal performance with a fast rate and high capacity. ZVI@C@PANI can reduce almost all the hexavalent chromium (Cr(VI)) (1.0 mg/L) Cr(VI) in 5 min, and has a maximum capacity of 508 mg/g. A maximum Cr(VI) removal capacity of 508 mg/g was achieved. The shell layers of C@PANI was demonstrated to be important to improve the electron utilization of the inner ZVI. The PANI shell captured and stored the H+ from the solution, providing the acidic condition on its surface. The carbon layer can adjust the H+ and H2 transfer in the ZVI@C@PANI. These were disclosed as the mechanisms involved in the improvement of electron utilization by this core-shell structured ZVI@C@PANI.

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Publication details

The article was received on 03 Apr 2018, accepted on 10 May 2018 and first published on 11 May 2018


Article type: Communication
DOI: 10.1039/C8TA03066A
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
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    Triple Layered Core-Shell ZVI@Carbon@Polyaniline Composites Enhanced Electron Utilization in Cr(VI) Reduction

    K. Gong, Q. Hu, Y. Xiao, X. Cheng, H. Liu, N. Wang, B. Qiu and Z. Guo, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA03066A

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