Zhang Shuai, Fu Jingru, Das Saikat, Ye Kaiqi, Zhu Weidong, Ben Teng
Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 321004, Jinhua, China.
Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, 321004, Jinhua, China.
Angew Chem Int Ed Engl. 2022 Oct 4;61(40):e202208660. doi: 10.1002/anie.202208660. Epub 2022 Sep 1.
In recent years, the porous sorbent-assisted atmospheric water harvesting (AWH) method has emerged as an effective approach for solving water crises without geographical restrictions. However, there is a limited array of porous adsorbent materials that can be used for AWH, which are inadequate to meet the needs under different climatic conditions. In light of this, herein, we synthesize a new crystalline porous organic salt (CPOS; denoted as CPOS-6) possessing a dual hydrogen bond system and verify its applicability toward AWH for the first time. Unlike other reported CPOSs, CPOS-6 displays an S-shaped water sorption isotherm owing to the presence of the dual hydrogen bond system. Under simulated drought conditions in Xinjiang Uygur Autonomous Region, CPOS-6 exhibits long-term water adsorption-desorption cycling stability, low water desorption temperature, and ultrarapid adsorption-desorption kinetics. The results confirm that CPOS-6 is an effective sorbent material for AWH.
近年来，多孔吸附剂辅助大气取水（AWH）方法已成为一种不受地理限制解决水危机的有效途径。然而，可用于AWH的多孔吸附材料种类有限，不足以满足不同气候条件下的需求。鉴于此，我们在此合成了一种具有双氢键体系的新型结晶多孔有机盐（CPOS；记为CPOS-6），并首次验证了其对AWH的适用性。与其他报道的CPOS不同，由于存在双氢键体系，CPOS-6呈现出S形水吸附等温线。在新疆维吾尔自治区模拟干旱条件下，CPOS-6表现出长期的水吸附-解吸循环稳定性、低水脱附温度和超快的吸附-解吸动力学。结果证实CPOS-6是一种用于AWH的有效吸附材料。
