Synthesis of Layered Co9S8-based Composites for High-Efficiency Rotating Evaporation of Saturated Brine
DESALINATION（2025）
Abstract
Harvesting freshwater via solar interfacial evaporation is a promising strategy with net-zero emissions. To achieve long-term stable freshwater acquisition, researchers have developed dynamic solar-driven water evaporators. However, these evaporators exhibit limited evaporation rates due to the insufficient photothermal conversion properties of the materials used. In this study, we prepared Co9S8/CoNiO2/Au composite materials through in-situ topological transformation, thereby improving the effect of the heterogeneous crystal lattice mismatch on electron transport. By embedding these materials into a spherical polyurethane sponge, we developed a new type of self-rotating evaporator with a solar full-spectrum absorbance of 95.84 %. The evaporator stably exhibited an evaporation rate of 3.10 kg m- 2 h- 1 within 240 h in saturated brine. The present work
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Key words
Topological transformation,Rotating evaporator,Self-removal of salt,Stable solar desalination
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