Modulating the macro/nanoarchitecture of evaporators to effectively harness diverse renewable energy sources is of paramount importance for optimizing the performance of solar-driven interfacial evaporation. Inspired by the geometric structure of a windmill, we designed an innovative solar evaporator that expertly harnesses both strong and weak convection. During the purification of heavy metal wastewater, the maximum evaporation rate can reach 4.95 kg m h under one sun irradiation by introducing an ultralow wind flow (0.1 m s), yielding an evaporation rate that is twice that of traditional evaporators. However, the gradual deposition of inorganic salt sediments on the evaporator surface is clearly observable. To address this issue, we present several innovative proof-of-concept cascade treatments that significantly extend the evaporator's operational lifespan. The innovative design and exceptional performance of this solar evaporator open avenues for advancements in sustainable water treatment, energy generation, and environmental remediation.
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