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Removal and reuse of Ag nanoparticles by magnetic polyaniline/Fe3O4 nanofibers

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Abstract

For the treatment of wastewater containing Ag nanoparticles (NPs), PANI/Fe3O4 nanofibers were firstly prepared by a novel self-assemble. And then, the efficiency for the removal of Ag NPs from wastewater was investigated. The magnetic performance of PANI/Fe3O4 nanofibers could be optimized by adjusting the pH of the self-assemblied system. Under pH of 3, the as-prepared nanofibers exhibited the highest magnetism and also displayed good efficiency (> 12 mg g−1) for the removal of Ag NPs. Importantly, the resulted product (PANI/Fe3O4/Ag composite) could act as a catalysis for cleaning durable pollutant, 4-nitrophenol. After 10 cycles, only slight decrease in rate constant was found, indicating excellent reusability. Those approaches provide a new way to merge the recovery of Ag NPs as pollutants and reuse of recovered Ag NPs as recyclable material for environmental remediation.

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Acknowledgements

This study was funded by STRP of Anhui University of Technology (2016307986).

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  1. Center for Engineering Practice and Innovation Education, Anhui University of Technology, Maanshan, 243002, Anhui, People’s Republic of China

    Qi Yang

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  1. Qi Yang
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Correspondence to Qi Yang.

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Yang, Q. Removal and reuse of Ag nanoparticles by magnetic polyaniline/Fe3O4 nanofibers. J Mater Sci 53, 8901–8908 (2018). https://doi.org/10.1007/s10853-018-2181-z

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  • DOI: https://doi.org/10.1007/s10853-018-2181-z

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