Amyloid-intercalated graphene oxide membranes for enhanced nanofiltration

We report on fast pressure-driven nanofiltration of strong GO membranes intercalated by protein amyloid fibrils. investigate the effect fibril loading membrane properties including stability, microstructure, reflux rate, permeance, rejection rate and fouling resistance. With increasing fibrils, becomes smooth resilient can be reused for many times with little disintegration. Microstructure analysis shows that fibrils enable expansion interlayer spacing between sheets, leading to around 100% increase in average water permeance 100 nm thick (15.6 L⋅m−2⋅hr−1⋅bar−1) compared neat (8.8 L⋅m−2⋅hr−1⋅bar−1). The hybrid display improved moderate ion (44–51%) heavy metal salts high molecular (>97%) organic dyes. Antifouling performance is evaluated terms flux recovery ratio ratios. incorporation change from irreversible reversible exhibits significantly enhanced (>95%). A possible mechanism proposed explain observations.