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Field emission scanning electron microscope images of AgNPs-modified PDA-SS/PVA film (a) and (b). Inset in (a), particle size distribution of AgNPs. The red arrows in (b) indicated the different morphologies of the synthesized AgNPs. (c) EDS spectrum of a selected area of AgNPs-PDA-SS/PVA film. (d) XRD patterns of pure sericin (d1), SS/PVA film (d2), PDA-SS/PVA film (d3) and AgNPs modified PDA-SS/PVA film (d4).
