High-performance solar-driven MOF AWH device with ultra-dense integrated modular design and reflux synthesis of Ni2Cl2(BTDD)
Zhao Shao, Yu‐Cheng Tang, Haotian Lv, Zhi‐Shuo Wang, Primož Poredoš, Yaohui Feng, Ruikun Sun, Xi Feng, Zhihui Chen, Zhenxuan Gao, Dong‐Dong Zhou, Jie‐Peng Zhang, R.Z. Wang
Abstract
Metal-organic frameworks (MOFs) for sorption-based atmospheric water harvesting (AWH) are promising for solving the global water crisis, but there are two major challenges: scaled-up production and high-performance modular device design. Herein, we propose a comprehensive solution encompassing large-scale synthesis coupled with an ultra-dense modular solar-driven device without auxiliary equipment. In our study, 0.1 kg Ni2Cl2(BTDD) per batch was achieved by reflux synthesis, with a yield of 84% and a space-time yield of 630 kgMOF m−3 month−1. Benefiting from this, we realized the application of this efficient physisorbent at device level. We analyzed the AWH process to obtain thermal requirements on two scales: the entire device and each component. After the optimization on both scales, the proposed device with an integrated modular design showed ultra-high water harvesting per unit volume of 23 L m−3 and water yield up to 840.5 g m−2 under 1 sun in 7 h.