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In Situ MXene Anchored Structure for Highly Durable Solar Steam Generation

Nano Letters(2024)SCI 1区SCI 2区

Chinese Acad Sci

Cited 0|Views26
Abstract
As a promising fresh water harvesting technology, interfacial solar steam generation has attracted growing interest. Efficient solar absorption and long-term operational performance are critical requirements of this technology. However, developing robust evaporators to promote practical applications under extreme conditions is still a grand challenge. Herein, we propose a light-assisted strategy to in situ prepare a Ti3C2Tx MXene anchored structure (MXAS) for enhanced solar evaporation with superior mechanical properties (compressive strength of 78.47 MPa, which can withstand a pressure of 3.92 x 10(6) times its own weight). Light irradiation enlarges the interlayer spacing of MXene and improves the solar absorption capability. Under one sun, the three-dimensional MXAS evaporator exhibits a steam generation rate of 2.48 kg m(-2) h(-1)and an evaporation efficiency of 89.3%, and it demonstrates long-term durability when testing in seawater. This strategy provides valuable insights into the potential application of a high-performance water evaporation system.
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in situ MXene anchored structure,compressive strength,electrochemistry,solar evaporator,desalinization
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要点】:该论文提出了一种基于Ti3C2Tx MXene锚定的三维结构,用于高效太阳能蒸发,该结构具有卓越的机械性能和长期稳定性,是极端条件下太阳能蒸馏的有力候选。

方法】:研究采用了一种光辅助策略,通过现场制备Ti3C2Tx MXene锚定结构(MXAS),以增强太阳能蒸发效率。

实验】:实验使用了一个太阳的照射条件下,对海水进行测试的三维MXAS蒸发器,结果显示其蒸汽生成速率为2.48 kg m(-2) h(-1),蒸发效率为89.3%,在承受了相当于自身重量3.92 x 10(6)倍的压缩力(78.47 MPa)后,仍表现出优异的耐久性。