作者：Yiqi Liao, Chuang Wang, Yanjuan Dong, Zhouyu Miao, Hou-Yong Yu,* Guozhuo Chen, Juming Yao, Yongfeng
关键字：cellulose, large-scale, seawater treatment, solar harvesting, sustainability
论文来源：期刊
发表时间：2024年

Interfacial solar evaporation, harnessing sunlight to induce water molecule

evaporation, holds great promise for sustainable solar energy conversion.

However, challenges such as reduced efficiency and instability due to salt

accumulation, inadequate water transport, and the high cost of advanced

nanostructured solar evaporators collectively hinder the sustainable and

large-scale practical use of this technology. Herein, an eco-friendly, floatable

3D solar seawater evaporator is developed by innovatively incorporating a

lightweight foam ball enclosed in a porous cellulose hydrogel. The 3D

evaporator achieves a high water evaporation rate of ≈2.01 kg m?2 h?1 under

1 Sun, owing to its super high photothermal efficiency of 117.9% and efficient

internal water transport channels. Even at a 0° simulated solar angle, the 3D

evaporator maintains 85.8% of the evaporation rate at a 90° simulated solar

angle. Moreover, the salt self-cleaning capability is realized by the

autonomous rotation caused by salt deposition. Particularly, the 3D

evaporator can be fabricated over a large area and maintain seawater

evaporation performance and structural integrity for 28 days. This study

provides novel economically feasible and sustainable large-scale solutions for

interfacial solar-powered seawater treatment.