ScholarWorks@동국대학교

초록

Solar steam generation (SSG) is a promising strategy to address freshwater scarcity through purification of undrinkable water resources, and an efficient and stable light harvesting material is essential to develop an efficient interfacial SSG device. Herein, oxidation-tolerant Bi-Te covered nanorods (BTCNs) are synthesized with a unique core-shell structure consisting of plasmonic Te nanorods encapsulated by Bi2Te3-TeO2 shells. This structure renders them robust, hydrophilic, and broadband photothermal absorbers. The BTCNs are integrated onto natural wood support to construct a high-performance interfacial SSG device (BTCN@wood). The optimized BTCN3@wood achieves an evaporation rate of 1.93 kg m- 2 h- 1 and an energy efficiency of 91.47% under 1 sun irradiation, outperforming other wood-based SSG devices. In addition, BTCN3@wood exhibits outstanding desalination and purification performance for real seawater, dye-contaminated water, and oily wastewater, while maintaining long-term stability, salt resistance, and self-cleaning ability. Outdoor experiments also confirm their reliability under natural sunlight conditions.

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