The research showed that the modified TFN membrane had improved water flux, salt rejection as well as its protein fouling resistance.
The research showed that the modified TFN membrane had improved water flux, salt rejection as well as its protein fouling resistance.

A group of researchers from the ​Chinese Academy ​of Sciences has successfully created a new thin film nanocomposite (TFN) reverse osmosis (RO) membrane, which shows enhanced water flux and salt rejection as well as good protein fouling resistance during desalination.

The recent ​development of ​2D nanomaterials has enabled the creation and modification ​of thin film ​nanocomposite (​TFN) RO ​membranes, which offer a new way to ​modify the ​membrane ​structure, ​mechanical ​strength, ​surface ​hydrophilicity, ​surface charge, ​charge density ​and surface ​roughness in ​the polyamide (PA) skin ​layer.  

The research, detailed in the Elsevier journal, Desalination (Volume 545, 15 March 2019, Pages 48-58), was led ​by Professor Zhang ​Kaisong from the ​Institute of ​Urban ​Environment, ​Chinese Academy ​of Sciences.

The TFN RO was modified by 2D laminar molybdenum ​disulfide (MoS2) which improved its desalination performance. The research showed that the modified ​TFN membrane ​had improved water ​flux, salt ​rejection as ​well as its ​protein fouling ​resistance which was ​attributed to the ​improved ​membrane ​surface ​hydrophilicity. ​

It is believed ​that TFN RO ​membranes ​modified with ​2D nanomaterial ​with special ​properties may ​represent the ​next generation ​of high-​performance RO ​membranes in ​water ​desalination. ​  ​