Shi Hailing, Ge Ruihao, Li Kai, Liu Kui, Wang Yixuan, Quan Fengyu, Zhang Kewei, Tian Xing
State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Institute of Marine Bio-based Materials, Qingdao University, Qingdao 266071, PR China.
State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Institute of Marine Bio-based Materials, Qingdao University, Qingdao 266071, PR China.
Carbohydr Polym. 2025 Oct 15;366:124071. doi: 10.1016/j.carbpol.2025.124071. Epub 2025 Jul 15.
Solar energy-driven water evaporation technology presents a sustainable method for seawater desalination and wastewater treatment. However, creating a biomass-based interfacial evaporator that achieves high salt resistance and rapid evaporation rates remains a significant challenge. In this study, we prepared a novel foam from carboxymethylated regenerated cellulose fibers, leveraging their natural orientation properties and excellent hydrophilicity. This foam featured hierarchically ordered water transport channels and numerous hydrophilic groups, which enhanced water transport efficiency and decreased the enthalpy of evaporation. The incorporation of polypyrrole gave it effective photothermal conversion properties. The foam demonstrated strong performance in solar-driven water evaporation, achieving an evaporation rate of 3.57 ± 0.04 kg m h under simulated sunlight conditions, with an evaporation efficiency of 93.8 ± 1.5 % and a notable ability to resist salt. This research provides a practical solution for sustainable desalination and holds great potential for the future development of desalination evaporators.
太阳能驱动的水蒸发技术为海水淡化和废水处理提供了一种可持续的方法。然而，制造一种具有高耐盐性和快速蒸发速率的生物质基界面蒸发器仍然是一项重大挑战。在本研究中，我们利用羧甲基化再生纤维素纤维的天然取向特性和优异的亲水性，制备了一种新型泡沫材料。这种泡沫具有分层有序的水传输通道和大量亲水性基团，提高了水传输效率并降低了蒸发焓。聚吡咯的加入赋予了它有效的光热转换性能。该泡沫在太阳能驱动的水蒸发方面表现出强大的性能，在模拟阳光条件下实现了3.57±0.04 kg m⁻² h⁻¹的蒸发速率，蒸发效率为93.8±1.5%，并且具有显著的耐盐能力。这项研究为可持续淡化提供了一个切实可行的解决方案，对淡化蒸发器的未来发展具有巨大潜力。
