一种功能不对称的Janus高热热混合体,用于干旱地区的大气收集水
Weicheng Chen1, Yangxi Liu1, Bolin Xu2
1Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education, South China University of Technology, Guangzhou, 510640, China.
Small (Weinheim an der Bergstrasse, Germany)
|February 17, 2024
概括
这项研究引入了用于大气水收集的Janus结构吸附剂. 这种新型材料使用双重湿透和光热设计高效地吸附和脱离水,显著改善了水的产生.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 金属有机框架 (MOF) 对于大气中的水收集是有效的.
- MOFs的一个主要局限性是它们的水溶解能力差,需要大量的能量投入.
- 这就需要开发先进的材料来有效释放水.
研究的目的:
- 为了应对能源密集型水从MOFs的吸收.
- 开发一种具有杰努斯结构的吸附剂,具有明显的湿透和光热功能.
- 通过改进吸附-脱附循环,提高大气水收集效率.
主要方法:
- 在双金属基板上使用现场生长制造Janus结构混合材料 (CuxS-Cu/Al-MOF).
- 整合一个湿透MOF面和一个光热CuxS面.
- 描述水吸附/脱附动力学和光热特性.
主要成果:
- 混合材料在30%的相对湿度下显示了0.161g-1的吸水能力.
- 由于高效的光热转换 (>90%的效率) 实现了快速的水溶解 (97%在40分钟内).
- 该材料在200个循环中表现出高稳定性,其水生成能力比粉末MOF大3.21倍.
结论:
- 斯结构的CuxS-Cu/Al-MOF混合物克服了水收集传统MOF的局限性.
- 这种设计可实现高效的低能耗水吸附和脱附.
- 该材料显示了实际大气水生成应用的巨大潜力.
相关概念视频
Adaptations that Reduce Water Loss
25.6K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
25.6K
The Water Cycle
24.5K
The Earth’s hydrosphere includes all of the areas where the storage and movement of water occurs. Since water is the basis of all living processes, the cycling of water is extremely important to ecosystem dynamics.
24.5K
Aqueous Solutions and Heats of Hydration
14.7K
Water and other polar molecules are attracted to ions. The electrostatic attraction between an ion and a molecule with a dipole is called an ion-dipole attraction. These attractions play an important role in the dissolution of ionic compounds in water.
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
14.7K


