Optimization Strategies of the Design and Preparation of Metal–Organic Framework Nanostructures for Water Sorption: A Review

Abstract

Metal–organic frameworks (MOFs) as popular nanomaterials have outstanding application prospects in water sorption applications due to their unique structures with excellent properties, such as high porosity, large specific surface area, nanoscale features, reticulation structure, and controllable adjustment of the pore size. Sorbents require high water sorption and water stability to collect, utilize, or remove water. The structure of most MOFs is destroyed upon contact with water, which greatly limits their practical application. This paper summarizes the internal mechanism of water-stable MOFs and describes the optimal design strategy of water-stabilized MOFs based on the structural design of water-stabilized MOFs and the modification of existing MOFs. This review summarizes and analyzes the current typical MOF synthesis and preparation methods. Solutions are proposed for the problems of MOFs in terms of the synthesis mechanism, mass production, and application, and the manufacturing strategies and long-term reliability of MOFs are also prospected. The water sorption mechanism of water-stable MOFs and the influencing factors of water sorption behavior are described, and the optimization strategy of the water sorption performance of MOFs is proposed in terms of the microstructure, surface functional groups, and electron group hybridization. Meanwhile, the current challenges are summarized according to the characteristics of water-adsorbing MOFs, and the future development of MOFs are prospected. It is expected to provide a valuable reference for the research direction of the application of MOFs in water sorption.

Advances in Functionalized Biocomposites of Living Cells Combined with Metal–Organic Frameworks

“…According to the structural properties, functional features, and advantages of the above porous nanomaterials, they can be utilized for the fabrication of related biomineralization shells on living organisms. Metal–organic frameworks (MOF), − with features such as ordered and tunable porosity, good crystallinity, tunable functionality, large surface area, chemical and thermal stabilities, biodegradability, and biocompatibility, have recently emerged as highly attractive candidates for integrating various biological entities. The integration of biomolecules with MOFs to achieve biocomposites is typically achieved via the following methods: encapsulation, − bioconjugation, − and infiltration. − In recent years, intensive efforts have been made to integrate MOFs with biology to form advanced biocomposites.…”

Pd–Ni–Fe Nanoparticles Supported on UiO-66 for Selective Hydrogenation of Fatty Acid Methyl Esters to Alcohols

“…Investigating methods to maximize the number of active sites with limited metal loading is of great importance for developing high-performance catalytic platforms. , Metal organic frameworks (MOFs) serve as ideal support candidates due to their periodic porous structure. , Among the MOFs, the structure of UiO-66 exhibits a high elastic modulus similar to that of zeolites and can withstand temperatures close to 500 °C. , Furthermore, UiO-66 has a higher specific surface area of over 1000 m 2 /g compared to conventional supports for carboxylate hydrogenation catalysts, such as SiO 2 , , TiO 2 , − and Al 2 O 3 . , Given its unique structural properties, UiO-66 has been used as promising support for the dispersion of MNPs in the hydrogenation of olefin and aldehyde, − ethylene oligomerization, and other reactions. To the best of our knowledge, UiO-66 has not been used alone as a support for the selective hydrogenation of fatty acid methyl esters.…”

Recent Developments in Multifunctional Coordination Polymers

“…Their utility as excellent catalysts has been demonstrated in CO 2 cycloaddition reactions with epichlorohydrin under ambient CO 2 pressure and solvent-free conditions. Moreover, the effective application of a diverse range of coordination polymers and metalorganic frameworks in many cutting-edge domains of materials science is only continuing to expand [65][66][67][68][69][70][71][72][73][74][75][76][77][78][79][80].…”