Recent progress on composite hydrogels and their integrated devices for atmospheric water harvesting

IF 7.7 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications Pub Date : 2025-09-28 DOI:10.1016/j.coco.2025.102601

Xujiao Wu , Junyi He , Zijin Lao, Xiaohan Ning, Jintao Zhu, Lianbin Zhang

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Abstract

The global shortage of freshwater resources has become a pressing issue, driving the development of alternative technologies for freshwater production. One promising solution is atmospheric water harvesting (AWH) technology, which focuses on extracting water vapor from the air. Hydrogels, with their three-dimensional network structure, high swelling rate, excellent hydrophilicity, and fast adsorption/desorption dynamics, are emerging as essential materials for AWH. By incorporating hygroscopic or photothermal components, composite hydrogels can significantly enhance atmospheric moisture capture and facilitate water release. This review article provides a recent progress of the synthesis methods, various structures, and functionalities of composite hydrogels in the context of AWH. We discuss the moisture absorption properties of different composite hydrogel types and their performance in AWH. Additionally, diverse AWH devices based on composite hydrogels, which are designed to maximize water collection efficiency, have been introduced. Finally, we provide insightful perspectives on the potential advancements and future directions in this rapidly growing field of composite hydrogels for AWH.

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复合水凝胶及其集水装置的研究进展

全球淡水资源短缺已成为一个紧迫的问题，推动了淡水生产替代技术的发展。一个很有前景的解决方案是大气水收集（AWH）技术，该技术侧重于从空气中提取水蒸气。水凝胶以其三维网状结构、高溶胀率、优异的亲水性和快速的吸附/解吸动力学等特点，正逐渐成为水暖水处理的重要材料。通过加入吸湿或光热成分，复合水凝胶可以显著增强大气水分捕获和促进水分释放。本文综述了水合水凝胶的合成方法、各种结构和功能等方面的研究进展。讨论了不同类型的复合水凝胶的吸湿性能及其在水处理中的性能。此外，各种基于复合水凝胶的AWH装置也被引入，旨在最大限度地提高水收集效率。最后，我们对这一快速发展的AWH复合水凝胶领域的潜在进展和未来方向提出了有见地的观点。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.