Functionalized boron nitride membranes with ultrafast solvent transport performance for molecular separation

Pressure-driven, superfast organic solvent filtration membranes have significant practical applications. An excellent filtration membrane should exhibit high selectivity and permeation in aqueous and organic solvents to meet increasing industrial demand. Here, we report an amino functionalized boron...

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Bibliographic Details
Published in:Nature communications 2018-05, Vol.9 (1), p.1902-8, Article 1902
Main Authors: Chen, Cheng, Wang, Jiemin, Liu, Dan, Yang, Chen, Liu, Yuchen, Ruoff, Rodney S., Lei, Weiwei
Format: Article
Language:English
Subjects:
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639/301/357/1018
639/301/357/537
639/925/927/1058
Acidic oxides
Boron
Boron nitride
Filtration
Flow velocity
Humanities and Social Sciences
Membranes
multidisciplinary
Nanochannels
Organic solvents
Penetration
Purification
Science
Science (multidisciplinary)
Separation
Solvents
Transport
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Summary:Pressure-driven, superfast organic solvent filtration membranes have significant practical applications. An excellent filtration membrane should exhibit high selectivity and permeation in aqueous and organic solvents to meet increasing industrial demand. Here, we report an amino functionalized boron nitride (FBN) based filtration membrane with a nanochannel network for molecular separation and permeation. This membrane is highly stable in water and in several organic solvents and shows high transport performance for solvents depending on the membranes’ thickness. In addition, the FBN membrane is applicable for solute screening in water as well as in organic solvents. More importantly, the FBN membranes are very stable in acidic, alkaline and oxidative media for up to one month. The fast-flow rate and good separation performance of the FBN membranes can be attributed to their stable networks of nanochannels and thin laminar structure, which provide the membranes with beneficial properties for practical separation and purification processes. 2D materials show promise for membrane filtration technologies, but their permeance to organic solvents is typically poor. Here, the authors prepare functionalized boron nitride membranes with high flux and high molecular separation performances in both aqueous solutions and organic solvents.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-018-04294-6