Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 325, Issue -, Pages 214-222Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2016.11.077
Keywords
Inorganic fibrous membranes; Graphene oxide; Processability; Selectivity; Water treatment
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Funding
- Independent Research Project of State Key Laboratory of Photocatalysis on Energy and Environment [2014B04]
- program for Qishan Scholar in Fuzhou University [XQS-1505]
- National Key Technologies R & D Program of China [2014BAC13B03]
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Graphene oxide (GO)-embedded titanate nanofiber (TNF) membranes with improved filtration performance are prepared successfully by a two-step method including electrostatic assembly of GO and TNFs into hybrids and subsequent processing of them into membranes by vacuum filtration. The embedded contents of GO sheets in films and thickness of as-assembled films can be adjusted facilely, endowing such composite films with good processability. Owing to the skilful introduction of GO sheets, the pore and/or channel structures in these hybrid membranes are modified. By treating different dye solutions (Direct Yellow and Direct Red), the filtration properties of these membranes show that the introduction of certain amount of GO sheets efficiently improve the separation performance of the membranes. Interestingly, these GO-embedded TNF membranes also display superior selective separation performance on filtrating the mixture solutions of such two dyes, making these hierarchical membranes more flexible and versatile in water treatment areas. (C) 2016 Elsevier B.V. All rights reserved.
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