Reverse osmosis (RO) and nanofiltration (NF) membrane technologies rely on polymeric films as active layers for water treatment. Aromatic polyamide (PA) membranes are at the forefront of the RO membrane field. However, some of the main disadvantages of PA membranes are a narrow operation temperature and pH operation window, being prone to biofouling and chemically unstable under chlorine exposure.[1] For these reasons, new RO and NF membranes are being developed by using diverse polymers and nanomaterials such as carbon nanotubes and graphene.[2] Graphene and graphene oxide exhibit great mechanical strength [3] allowing them to withstand the pressure required to surpass the osmotic pressure.[4]
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