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Membranes 2019, 9(1), 16; https://doi.org/10.3390/membranes9010016

Dye Degrading and Fouling-Resistant Membranes Formed by Deposition with Ternary Nanocomposites of N-Doped Graphene/TiO2/Activated Carbon

1
Center for Membrane Separation and Water Science & Technology, Ocean College, Zhejiang University of Technology, Hangzhou 310014, China
2
Collaborative Innovation Center for Membrane Separation and Water Treatment of Zhejiang Province Huzhou Institute, Huzhou 313000, China
*
Author to whom correspondence should be addressed.
Received: 23 October 2018 / Revised: 4 January 2019 / Accepted: 9 January 2019 / Published: 15 January 2019
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Abstract

A ternary nanocomposite consisting of N-doped graphene (NGR)/TiO2/activated carbon ([email protected]) was prepared, and the components’ synergetic effect on dye degradation was investigated after deposition on the surface of a polysulfone membrane (PSF). As far as we know, this ternary composite catalyst has never previously been used to degrade dyes nor been used as a functional layer for separation membranes. The surface morphology and structure of the as-prepared membranes were analyzed by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The [email protected] PSF membrane ([email protected]) presents excellent photodegradation efficiency to methyl orange (MO) under both UV (95.2%) and sunlight (78.1%) irradiation, much higher than those values of PSF, TiO2- modified PSF (TiO2-PSF), and N-doped graphene/TiO2 (NGRT)-modified PSF membranes (NGRT-PSF) under the same conditions. The high flux recovery ratio (95.5%) demonstrates that the [email protected] membrane shows improved antifouling performance. The photocatalytic results prove that surface deposition method (95.2%) was better than the blending method (31.1%) for forming high-performance membranes. Therefore, the [email protected] membrane has the potential for broad applications in dye degradation to treat waste water from textile industries. View Full-Text
Keywords: N-doped graphene/TiO2/activated carbon nanocomposite; methyl orange; photocatalytic; antifouling performance; membrane N-doped graphene/TiO2/activated carbon nanocomposite; methyl orange; photocatalytic; antifouling performance; membrane
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Wu, T.; Zhang, Z.; Zhai, D.; Liu, Y.; Liu, Q.; Xue, L.; Gao, C. Dye Degrading and Fouling-Resistant Membranes Formed by Deposition with Ternary Nanocomposites of N-Doped Graphene/TiO2/Activated Carbon. Membranes 2019, 9, 16.

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