Pickering Emulsion-Mediated Two-Step Interfacial Assembly of Carbon Film with Catalysts
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Pickering emulsion stabilized with amphiphilic nanoparticles (NPs) is known for its high stability, arising from the significant absorption energy at the liquid-liquid interface. In this study, we present a straightforward approach for creating scalable, jamming-structured Pt/C NP films at the air/water interface by breaking Pickering emulsions through a catalytic reaction called two-step interface assembly. This method addresses existing challenges in fabricating homogeneous Pt/C NP films for use as catalysts. The versatility of this technique is demonstrated by the successful transfer of these films onto various substrates, notably including stretchable ones, where they exhibit exceptional stability. Furthermore, gold can be electrolessly deposited onto these films by using them as a template precursor film. This approach can broaden potential applications from the catalytic field to foldable, stretchable electronic devices.