Figure 1: Schematic diagrams showing (a) the layered, open structure of graphene nanoplatelets (GNP) which are suitable for broad spectrum proinflammatory cytokine removal and (b) the use of PTFE, as a binder to produce the (c) freestanding flexible GNP-PTFE film with (d) exposed GNP surfaces and PTFE holding the GNP (indicated by yellow arrow), indicating a potential route for use in (e) hemoperfusion.