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超级吸湿海绵,用于可持续的大气收集水和发电

Hanyu Guo¹, Qingliang Luo¹, Dong Liu²

¹Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, China.

Advanced materials (Deerfield Beach, Fla.)

|November 7, 2024

概括

研究人员开发了一种稳定的超级吸湿海绵,使用LiCl和多巴胺在胺海绵上收集大气中的水. 这种材料有效地捕获干旱地区的水,也可以从废热中产生电力.

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:

基于吸附的大气水收集 (SAWH) 为全球水资源短缺提供了解决方案,特别是在干旱地区.
现有的基于盐的SAWH吸附剂面临着复杂的制备挑战,以防止盐泄漏,并经常忽视在收集水过程中产生的热量.
有效和稳定的吸附剂材料对于实际的SAWH应用至关重要.

研究的目的:

开发一种稳定的,以盐为基础的超级吸水海绵,以有效地收集大气中的水.
为了解决传统盐基吸附剂中常见的盐泄漏问题.
创建一个双重功能系统,利用水收集过程中产生的热量,同时生产水和电力.

主要方法:

通过将化 (LiCl) 与多巴胺 (DA) 结合并在多孔胺海绵 (PMS) 框架上聚合DA,结合碳纳米管 (CNTs) 来合成一种新型复合材料.
在不同相对湿度 (RH) 条件下研究了LiCl/PMS/CNTs复合物的吸水能力.
集成开发的吸附物质与热电模块,以创建一个同时产生水和电力的系统.

主要成果:

这种LiCl/PMS/CNTs复合物表现出高吸水率 (1.26gg-1在15%RH和1.81gg-1在30%RH) 没有观察到盐泄漏.
在干旱的环境中 (30%RH) 取得了惊人的每日水产率3.47公斤公斤-1天-1天.
综合系统在吸水过程中产生了最大输出功率密度为35.4 mW m-2的电力,在脱水过程中产生了454.4 mW m-2的电力.

结论:

开发的LiCl/PMS/CNTs海绵是一种稳定且高效的吸附剂,用于大气水收集,克服盐泄漏问题.
综合系统有效地利用了收集水的热量,使得淡水和发电可以同时发生.
这项技术在水资源紧张地区具有可持续的水和能源解决方案的巨大潜力.

关键词:

收集大气中的水.复合剂复合剂复合剂发电就是发电的过程.光学盐光学盐光学盐综合合成综合合成综合合成

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