Metal–Organic Frameworks and Water: ‘From Old Enemies to Friends’?

Ultrahigh solar-driven atmospheric water production enabled by scalable rapid-cycling water harvester with vertically aligned nanocomposite sorbent

“…8 The working performance of SAWH system is strongly dependent on the water sorption capacity of sorbents; however, traditional porous sorbents (e.g., silica gels and zeolites) provide low water productivity because of their poor water sorption performance at low RH. 9 Therefore, many novel sorbents such as metal-organic frameworks (MOFs), [10][11][12][13][14] hydrogels, [15][16][17] liquid solutions, 18,19 and composite sorbents 20,21 with extraordinary performance were designed and exploited by the efforts from materials scientists in past years. Lately, these novel sorbents with high water sorption performance and special thermal/electrical effects also inspired energy-related applications such as energy storage, 22,23 thermal management, [24][25][26][27] electricity/fuel generations, 28,29 or co-application.…”

Ammonia Capture via an Unconventional Reversible Guest-Induced Metal-Linker Bond Dynamics in a Highly Stable Metal–Organic Framework

“…Metal–organic frameworks (MOFs), one of the most prominent classes of porous materials, initially suffered from poor chemical stability, a key issue that limited their use in many applications. Huge efforts have been thus devoted over the last decade to design highly stable MOFs mostly by reinforcing the metal-linker coordination bond via the combination of high-valence metal (III/IV) and highly complexing ligands (carboxylate, phenolate, and triazole) or low-valence metal (II) and azolate linkers. − Because these coordination bonds are strong, this generally leads to a misconception that they are static excluding their potential flexibility/dynamics up to the point of being labile. − …”

A manganese oxide/MOF nano-composite for the adsorption of methylene blue from an aqueous solution

“…The chemical stability of MOFs refers to the ability of the material to withstand exposure to various chemicals such as moisture, solvents, acids, and bases [38]. The hydrolytic instability of MOFs is primarily attributed to the metal-ligand coordination bond cleavage caused by the attack of water molecules, which eventually ends up in the collapse of the structure [39,40]. Thus, signi cant effort has been focused on various methods to design robust MOFs for water-related applications.…”