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

    Year: 2018

    Journal: Nat. Commun., Volume 9, MAY 15

    Authors: Chen, Cheng; Wang, Jiemin; Liu, Dan; Yang, Chen; Liu, Yuchen; Ruoff, Rodney S.; Lei, Weiwei

    Organizations: Australian Research Council Discovery Early Career Researcher Award scheme [DE150101617, DE140100716]; Deakin University Central Research Grants Scheme

    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.
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