Defect engineering enables synergistic action of hierarchical porosity and multifunctionality for efficient catalysis of diverse reactions

Functionalization of Defective Zr-MOFs for Water Decontamination: Mechanistic Insight into the Competitive Roles of −NH2 and −SH Sites in the Removal of Hg(II) Ions

“…Extensive studies were performed on the adsorptive removal of Hg(II) ions from contaminated waters using MOFs, especially zirconium MOFs (Zr-MOFs) . For this target, Zr-MOFs are ideal candidates because (I) they are highly stable in a vast range of pH’s, (II) they can be easily functionalized with different functional groups based on different synthetic strategies, and (III) their porosity and surface area can be controlled via the right selection of building blocks or defect engineering approaches. − The highly stable and crystalline structure of Zr-MOFs makes scientists able to identify the mechanism of host–guest interactions between the metal ions and framework at the molecular level, which is an inspiring vision for the development of highly efficient MOFs and favorite applications. The porosity and functionalization of Zr-MOFs are two critical parameters to attain a highly efficient metal ion removal process. , The higher porosity or higher density of guest interactive sites results in a higher removal efficiency.…”

Functionalization of Defective Zr Metal–Organic Frameworks for Water Decontamination: Mechanistic Insight into the Competitive Roles of -NH2 and -SH Sites in Removal of As(III) Species

“…Metal–organic frameworks (MOFs) make up a subcategory of coordination polymers with high porosity and a large surface area that have been extensively applied for removal of different kinds of pollutants from water. − MOFs are unique group of porous materials because they simultaneously benefit from multiple significant advantages, such as a large surface area with variable porosity, the hybrid structure of which can profit from the chemical characteristic of organic and inorganic building blocks, tunability in chemical functionality to access optimized host–guest interactions, and a highly crystalline structure that is suitable for studies about relevance between structure and application. − These characteristics enable scientists to design novel MOF-based adsorbents based on the chemical properties of the target pollutants. Therefore, MOFs can be applied as efficient materials for the removal of arsenic contaminants.…”