Wang Xueyang, Li Xiuqiang, Liu Guoliang, Li Jinlei, Hu Xiaozhen, Xu Ning, Zhao Wei, Zhu Bin, Zhu Jia
National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, 210093, P. R. China.
Angew Chem Int Ed Engl. 2019 Aug 26;58(35):12054-12058. doi: 10.1002/anie.201905229. Epub 2019 Jul 12.
Harvesting water from air is a promising strategy for fresh-water production, and it is particularly desirable for areas that lack direct access to clean water. While high-concentration liquid sorbent is well-known for high sorption, it has not been widely used for atmospheric water collection, being primarily limited by the difficulty in desorption. Interfacial solar heating based on a salt-resistant GO-based aerogel is now shown to enable a high-concentration liquid sorbent (CaCl 50 wt % solution) based atmospheric water generator. Fresh water (2.89 kg m day ) can be produced at about 70 % relative humidity, with only solar energy input and energy efficiency of desorption as high as 66.9 %. This low-cost and effective approach provides an attractive pathway to extract water from air, to relieve the thirst of arid, land-locked, and other areas where fresh water is scarce.
从空气中收集水分是一种很有前景的淡水生产策略，对于那些无法直接获取清洁水源的地区来说尤其如此。虽然高浓度液体吸附剂以其高吸附性而闻名，但它尚未广泛用于大气水收集，主要受限于解吸困难。现在表明，基于耐盐氧化石墨烯气凝胶的界面太阳能加热能够实现基于高浓度液体吸附剂（50 wt% CaCl₂溶液）的大气水发生器。在相对湿度约70%的条件下，仅通过太阳能输入就能生产淡水（2.89 kg m⁻² day⁻¹），解吸能效高达66.9%。这种低成本且有效的方法为从空气中提取水分提供了一条有吸引力的途径，以缓解干旱、内陆和其他淡水稀缺地区的缺水问题。
