Abstract
Interfacial solar-thermal conversion has broad application prospects in solar driven steam generation, seawater desalination, sewage purification, and other fields. For a wide range of applications, high-efficiency interfacial solar-thermal conversion materials with the feature of being lightweight, flexible, and easy to scale up at the same time are significantly valued. Herein, a strategy for the preparation of solar-thermal poly (4-vinylpyridine) (P4VP) nanofiber-gold nanoparticle (Au NP) composite film (PGCF) is reported. Combining with the flexible and lightweight P4VP nanofibers, these absorbed Au NPs enable better solar-thermal conversion efficiency. Accordingly, the PGCF provides high-performance interfacial solar-driven steam generation, with 77% solar-heat conversion efficiency under the power density of 3.4kW m-2 , which shows stable output (3.4kg m-2 h-1 ) in the application of solar-driven seawater desalination. In addition, PGCF is light in weight, flexible, and suitable for scalable commercial production, enabling PGCF broad application prospects in the field of light-to-heat conversion.
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