Record Atmospheric Fresh Water Capture and Heat Transfer with a Material Operating at the Water Uptake Reversibility Limit.
Record Atmospheric Fresh Water Capture and Heat Transfer with a Material Operating at the Water Uptake Reversibility Limit.
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DOI：
10.1021/acscentsci.7b00186
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发表时间：
2017-06-28
影响因子：
18.2
通讯作者：
Dincă M
中科院分区：
文献类型：
--
作者：
Rieth AJ;Yang S;Wang EN;Dincă M
在低相对湿度下捕获水蒸气对于在沙漠地区生产饮用水以及用于热传递和储存是可取的。在这里，我们报告了一种介孔金属-有机骨架，在30%的相对湿度下，它可以捕获82%的水。在模拟沙漠条件下，该吸附剂将提供0.82gh2o gMOF-1，与以前最好的材料相比，几乎是淡水量的两倍。该材料还展示了每个循环400千瓦时m-3的制冷能力，这也是能够在环境温度和输出温度之间产生20°C差的脱硫剂的创纪录数值。这种吸水剂的吸水率得到了优化：我们材料的孔径超过了水毛细作用的临界直径，使吸水率达到可逆性的极限。介孔金属−有机骨架在低湿度下表现出创纪录的吸水率，在淡水发电和热泵中具有重要意义。
The capture of water vapor at low relative humidity is desirable for producing potable water in desert regions and for heat transfer and storage. Here, we report a mesoporous metal–organic framework that captures 82% water by weight below 30% relative humidity. Under simulated desert conditions, the sorbent would deliver 0.82 gH2O gMOF–1, nearly double the quantity of fresh water compared to the previous best material. The material further demonstrates a cooling capacity of 400 kWh m–3 per cycle, also a record value for a sorbent capable of creating a 20 °C difference between ambient and output temperature. The water uptake in this sorbent is optimized: the pore diameter of our material is above the critical diameter for water capillary action, enabling water uptake at the limit of reversibility. A mesoporous metal−organic framework exhibits record uptake of water at low humidity, of importance in fresh water generation and heat pumps.