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强大的生物启发的微细胞和微纳米通道光热气凝,用于高效的大气水收集

Chang Gao¹, Dongdong Yu¹, Lingmei Zhu¹

¹Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, P. R. China.

|November 5, 2025

概括

研究人员开发了一种新的光热气凝,用于收集大气中的水. 这种材料有效地捕获和释放水,为全球淡水短缺提供了一个有希望的解决方案.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
化学工程是化学工程的重要组成部分.

背景情况:

全球淡水短缺需要创新的收集水的战略.
大气水收集 (AWH) 正在作为一种可持续解决方案获得关注.
生物仿真设计,灵感来自于自然系统,如形树木的树木,为高效的AWH提供了潜力.

研究的目的:

设计和制造一个强大的微细胞和微纳米通道光热气凝 (MMPA),以有效地收集大气中的水.
为了研究设计的MMPA的吸水,释放和稳定性特征.
评估MMPA在自然条件下的实际收集水的性能.

主要方法:

使用空心MIL-101 (((Cr),纤维素酸纳米纤维,酸和聚烯酸通过定向冷干燥和Ca2+离子交联来制造MMPA.
对MMPA的微细胞和微纳米通道结构的表征,用于高表面积和水友性站点.
测试不同相对湿度 (RH) 级别的吸水能力和在太阳辐射下释放水的效率.

主要成果:

在40%的RH下,MMPA具有~0.73gg-1的吸水能力.
光热效应允许快速升温 (在1分钟的阳光下5分钟内达到~85°C),从而有效释放水 (在40分钟内达到~75%).
在50个吸水释放周期中表现出极好的稳定性,并实现了室外水收集量为~5.49 L kg-1 day-1.

结论:

设计的MMPA显示了大气水收集的高效率和稳定性.
仿生微细胞和微纳米通道结构是其性能的关键.
这种材料为开发先进的收集水技术提供了一个有希望的途径.

关键词:

生物启发的毛细血管定向气凝是一种定向气凝.微/纳米道的使用.光热的光热系统收集水的方法收集水

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