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Credit: LI Sushuang
Nanofiltration (NF) is an advanced technology for treating wastewater containing organic micropollutants (OMPs).
Recently, a research group led by Prof. WAN Yinhua from the Institute of Process Engineering (IPE) of the Chinese Academy of Sciences developed a stable graphene oxide nanofiltration membrane with uniform pore size to remove OMPs.
The study was published in
Chemical Engineering Journal on Jan. 20.
It proposes combining signal amplification strategy and defect chemistry to reduce membrane pore size distribution, thus offering a promising method for preparing highly selective NF membranes.
Graphene oxide (GO) shows great potential in molecular sieving for use in NF. GO membranes are generally prepared by stacking GO nanosheets on a porous support layer. However, the use of GO membranes is limited due to their low stability in aqueous environments.