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Title: Photocatalytic Nanofiltration Membranes with Self‐Cleaning Property for Wastewater Treatment

Journal Article · · Advanced Functional Materials
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  1. MOE Key Laboratory of Macromolecular Synthesis and Functionalization, and Key Laboratory of Adsorption and Separation Materials &, Technologies of Zhejiang Province Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China
  2. Nanoscience &, Technology Division Argonne National Laboratory 9700 South Cass Avenue Lemont IL 60439 USA, Institute for Molecular Engineering University of Chicago Chicago IL 60637 USA

Membrane fouling is one of the most severe problems restricting membrane separation technology for wastewater treatment. This work reports a photocatalytic nanofiltration membrane (NFM) with self‐cleaning property fabricated using a facile biomimetic mineralization process. In this strategy, a polydopamine (PDA)/polyethyleneimine (PEI) intermediate layer is fabricated on an ultrafiltration membrane via a co‐deposition method followed by mineralization of a photocatalytic layer consisting of β‐FeOOH nanorods. The PDA–PEI layer acts both as a nanofiltration selective layer and an intermediate layer for anchoring the β‐FeOOH nanorods via strong coordination complexes between Fe 3+ and catechol groups. In visible light, the β‐FeOOH layer exhibits efficient photocatalytic activity for degrading dyes through the photo‐Fenton reaction in the presence of hydrogen peroxide, endowing the NFM concurrently with effective nanofiltration performance and self‐cleaning capability. Moreover, the mineralized NFMs exhibit satisfactory stability under simultaneous filtration and photocatalysis processing, showing great potential in advanced wastewater treatment.

Sponsoring Organization:
USDOE
Grant/Contract Number:
DE‐AC02‐06CH11357
OSTI ID:
1401545
Journal Information:
Advanced Functional Materials, Journal Name: Advanced Functional Materials Vol. 27 Journal Issue: 27; ISSN 1616-301X
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 204 works
Citation information provided by
Web of Science

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