Alawadhi Ali H, Chheda Saumil, Stroscio Gautam D, Rong Zichao, Kurandina Daria, Nguyen Ha L, Rampal Nakul, Zheng Zhiling, Gagliardi Laura, Yaghi Omar M
Department of Chemistry, University of California, Berkeley, California 94720, United States.
Kavli Energy Nanoscience Institute, University of California, Berkeley, California 94720, United States.
J Am Chem Soc. 2024 Jan 24;146(3):2160-2166. doi: 10.1021/jacs.3c11947. Epub 2024 Jan 11.
We synthesized two isoreticular furan-based metal-organic frameworks (MOFs), MOF-LA2-1(furan) and MOF-LA2-2(furan) with rod-like secondary building units (SBUs) featuring 1D channels, as sorbents for atmospheric water harvesting (LA = long arm). These aluminum-based MOFs demonstrated a combination of high water uptake and stability, exhibiting working capacities of 0.41 and 0.48 g/g (under isobaric conditions of 1.70 kPa), respectively. Remarkably, both MOFs showed a negligible loss in water uptake after 165 adsorption-desorption cycles. These working capacities rival that of MOF-LA2-1(pyrazole), which has a working capacity of 0.55 g/g. The current MOFs stand out for their high water stability, as evidenced by 165 cycles of water uptake and release. MOF-LA2-2(furan) is the first aluminum MOF to employ a double 'long arm' extension strategy, which is confirmed through single-crystal X-ray diffraction (SCXRD). The MOFs were synthesized by using a straightforward synthesis route. This study offers valuable insights into the design of durable, water-stable MOFs and underscores their potential for efficient water harvesting.
我们合成了两种等规呋喃基金属有机框架材料（MOF），即MOF-LA2-1（呋喃）和MOF-LA2-2（呋喃），它们具有带有一维通道的棒状二级构筑单元（SBU），作为大气集水的吸附剂（LA = 长臂）。这些铝基金属有机框架材料展现出高吸水量和稳定性的结合，在1.70 kPa等压条件下的工作容量分别为0.41和0.48 g/g。值得注意的是，在165次吸附-解吸循环后，两种MOF的吸水量损失都可忽略不计。这些工作容量与MOF-LA2-1（吡唑）相当，后者的工作容量为0.55 g/g。目前的这些MOF因其高水稳定性而突出，165次吸水和释水循环证明了这一点。MOF-LA2-2（呋喃）是首个采用双“长臂”延伸策略的铝基金属有机框架材料，这通过单晶X射线衍射（SCXRD）得以证实。这些金属有机框架材料是通过简单的合成路线合成的。这项研究为耐用、水稳定的金属有机框架材料的设计提供了有价值的见解，并强调了它们在高效集水方面的潜力。
